Merge branch 'vladdu/jinterface_code_cleanup/OTP-12211' into maint

* vladdu/jinterface_code_cleanup/OTP-12211:
  fix warning: Socket's InputStream not closed
  silence 'potential resource leak' warnings
  don't warn about some unused fields/variables
  handle warnings about potential null pointers
  keep all method parameters final
  renamed method parameters hiding fields
  add 'break' statements to make compiler happy
  remove warnings from OtpMD5
  rename OtpNode.flags to connFlags
  rename OtpNode.Acceptor.port to acceptorPort
  rename field 'self' to 'localNode'
  mark deprecated unused private constructor
  simplify 'if' statements
  remove warnings: @Override, switch fall-through
  make serialVersionUID fields private
  remove unnecessary syntax (casts)
  remove unused variables
  removed unnecessary semicolons, imports, labels
  remove unnecessary null pointer checks
  remove unnecessary Cloneable and Serializable

36 files changed, 276 insertions, 289 deletions

diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/AbstractConnection.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/AbstractConnection.java
index 85d303689f..b8a973753a 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/AbstractConnection.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/AbstractConnection.java
@@ -20,7 +20,6 @@
 package com.ericsson.otp.erlang;
 
 import java.io.IOException;
-import java.io.InputStream;
 import java.net.Socket;
 import java.util.Random;
 
@@ -87,7 +86,7 @@ public abstract class AbstractConnection extends Thread {
     protected boolean connected = false; // connection status
     protected Socket socket; // communication channel
     protected OtpPeer peer; // who are we connected to
-    protected OtpLocalNode self; // this nodes id
+    protected OtpLocalNode localNode; // this nodes id
     String name; // local name of this connection
 
     protected boolean cookieOk = false; // already checked the cookie for this
@@ -137,7 +136,7 @@ public abstract class AbstractConnection extends Thread {
      */
     protected AbstractConnection(final OtpLocalNode self, final Socket s)
 	    throws IOException, OtpAuthException {
-	this.self = self;
+	this.localNode = self;
 	peer = new OtpPeer();
 	socket = s;
 
@@ -181,7 +180,7 @@ public abstract class AbstractConnection extends Thread {
     protected AbstractConnection(final OtpLocalNode self, final OtpPeer other)
 	    throws IOException, OtpAuthException {
 	peer = other;
-	this.self = self;
+	this.localNode = self;
 	socket = null;
 	int port;
 
@@ -234,6 +233,7 @@ public abstract class AbstractConnection extends Thread {
 	if (!connected) {
 	    throw new IOException("Not connected");
 	}
+    @SuppressWarnings("resource")
 	final OtpOutputStream header = new OtpOutputStream(headerLen);
 
 	// preamble: 4 byte length + "passthrough" tag + version
@@ -246,7 +246,7 @@ public abstract class AbstractConnection extends Thread {
 	header.write_long(regSendTag);
 	header.write_any(from);
 	if (sendCookie) {
-	    header.write_atom(self.cookie());
+	    header.write_atom(localNode.cookie());
 	} else {
 	    header.write_atom("");
 	}
@@ -278,6 +278,7 @@ public abstract class AbstractConnection extends Thread {
 	if (!connected) {
 	    throw new IOException("Not connected");
 	}
+    @SuppressWarnings("resource")
 	final OtpOutputStream header = new OtpOutputStream(headerLen);
 
 	// preamble: 4 byte length + "passthrough" tag + version
@@ -289,7 +290,7 @@ public abstract class AbstractConnection extends Thread {
 	header.write_tuple_head(3);
 	header.write_long(sendTag);
 	if (sendCookie) {
-	    header.write_atom(self.cookie());
+	    header.write_atom(localNode.cookie());
 	} else {
 	    header.write_atom("");
 	}
@@ -312,6 +313,7 @@ public abstract class AbstractConnection extends Thread {
     private void cookieError(final OtpLocalNode local,
 	    final OtpErlangAtom cookie) throws OtpAuthException {
 	try {
+        @SuppressWarnings("resource")
 	    final OtpOutputStream header = new OtpOutputStream(headerLen);
 
 	    // preamble: 4 byte length + "passthrough" tag + version
@@ -347,6 +349,7 @@ public abstract class AbstractConnection extends Thread {
 	    msg[0] = new OtpErlangAtom("$gen_cast");
 	    msg[1] = new OtpErlangTuple(msgbody);
 
+        @SuppressWarnings("resource")
 	    final OtpOutputStream payload = new OtpOutputStream(
 		    new OtpErlangTuple(msg));
 
@@ -384,6 +387,7 @@ public abstract class AbstractConnection extends Thread {
 	if (!connected) {
 	    throw new IOException("Not connected");
 	}
+    @SuppressWarnings("resource")
 	final OtpOutputStream header = new OtpOutputStream(headerLen);
 
 	// preamble: 4 byte length + "passthrough" tag
@@ -420,6 +424,7 @@ public abstract class AbstractConnection extends Thread {
 	if (!connected) {
 	    throw new IOException("Not connected");
 	}
+    @SuppressWarnings("resource")
 	final OtpOutputStream header = new OtpOutputStream(headerLen);
 
 	// preamble: 4 byte length + "passthrough" tag
@@ -468,6 +473,7 @@ public abstract class AbstractConnection extends Thread {
 	if (!connected) {
 	    throw new IOException("Not connected");
 	}
+    @SuppressWarnings("resource")
 	final OtpOutputStream header = new OtpOutputStream(headerLen);
 
 	// preamble: 4 byte length + "passthrough" tag
@@ -488,6 +494,7 @@ public abstract class AbstractConnection extends Thread {
 	do_send(header);
     }
 
+    @SuppressWarnings("resource")
     @Override
     public void run() {
 	if (!connected) {
@@ -506,7 +513,7 @@ public abstract class AbstractConnection extends Thread {
 		// don't return until we get a real message
 		// or a failure of some kind (e.g. EXIT)
 		// read length and read buffer must be atomic!
-		tick_loop: do {
+        do {
 		    // read 4 bytes - get length of incoming packet
 		    // socket.getInputStream().read(lbuf);
 		    readSock(socket, lbuf);
@@ -526,6 +533,7 @@ public abstract class AbstractConnection extends Thread {
 		final byte[] tmpbuf = new byte[len];
 		// i = socket.getInputStream().read(tmpbuf);
 		readSock(socket, tmpbuf);
+        ibuf.close();
 		ibuf = new OtpInputStream(tmpbuf, flags);
 
 		if (ibuf.read1() != passThrough) {
@@ -567,12 +575,12 @@ public abstract class AbstractConnection extends Thread {
 			}
 			cookie = (OtpErlangAtom) head.elementAt(1);
 			if (sendCookie) {
-			    if (!cookie.atomValue().equals(self.cookie())) {
-				cookieError(self, cookie);
+			    if (!cookie.atomValue().equals(localNode.cookie())) {
+				cookieError(localNode, cookie);
 			    }
 			} else {
 			    if (!cookie.atomValue().equals("")) {
-				cookieError(self, cookie);
+				cookieError(localNode, cookie);
 			    }
 			}
 			cookieOk = true;
@@ -610,12 +618,12 @@ public abstract class AbstractConnection extends Thread {
 			}
 			cookie = (OtpErlangAtom) head.elementAt(2);
 			if (sendCookie) {
-			    if (!cookie.atomValue().equals(self.cookie())) {
-				cookieError(self, cookie);
+			    if (!cookie.atomValue().equals(localNode.cookie())) {
+				cookieError(localNode, cookie);
 			    }
 			} else {
 			    if (!cookie.atomValue().equals("")) {
-				cookieError(self, cookie);
+				cookieError(localNode, cookie);
 			    }
 			}
 			cookieOk = true;
@@ -749,13 +757,14 @@ public abstract class AbstractConnection extends Thread {
 	final int oldLevel = traceLevel;
 
 	// pin the value
+    int theLevel = level;
 	if (level < 0) {
-	    level = 0;
+        theLevel = 0;
 	} else if (level > 4) {
-	    level = 4;
+        theLevel = 4;
 	}
 
-	traceLevel = level;
+    traceLevel = theLevel;
 
 	return oldLevel;
     }
@@ -908,18 +917,16 @@ public abstract class AbstractConnection extends Thread {
 	int got = 0;
 	final int len = b.length;
 	int i;
-	InputStream is = null;
 
 	synchronized (this) {
 	    if (s == null) {
 		throw new IOException("expected " + len
 			+ " bytes, socket was closed");
 	    }
-	    is = s.getInputStream();
 	}
 
 	while (got < len) {
-	    i = is.read(b, got, len - got);
+        i = s.getInputStream().read(b, got, len - got);
 
 	    if (i < 0) {
 		throw new IOException("expected " + len
@@ -943,9 +950,9 @@ public abstract class AbstractConnection extends Thread {
 	try {
 	    sendStatus("ok");
 	    final int our_challenge = genChallenge();
-	    sendChallenge(peer.distChoose, self.flags, our_challenge);
+	    sendChallenge(peer.distChoose, localNode.flags, our_challenge);
 	    final int her_challenge = recvChallengeReply(our_challenge);
-	    final byte[] our_digest = genDigest(her_challenge, self.cookie());
+	    final byte[] our_digest = genDigest(her_challenge, localNode.cookie());
 	    sendChallengeAck(our_digest);
 	    connected = true;
 	    cookieOk = true;
@@ -978,10 +985,10 @@ public abstract class AbstractConnection extends Thread {
 		System.out.println("-> MD5 CONNECT TO " + peer.host() + ":"
 			+ port);
 	    }
-	    sendName(peer.distChoose, self.flags);
+	    sendName(peer.distChoose, localNode.flags);
 	    recvStatus();
 	    final int her_challenge = recvChallenge();
-	    final byte[] our_digest = genDigest(her_challenge, self.cookie());
+	    final byte[] our_digest = genDigest(her_challenge, localNode.cookie());
 	    final int our_challenge = genChallenge();
 	    sendChallengeReply(our_challenge, our_digest);
 	    recvChallengeAck(our_challenge);
@@ -1054,33 +1061,35 @@ public abstract class AbstractConnection extends Thread {
 	return res;
     }
 
-    protected void sendName(final int dist, final int flags) throws IOException {
+    protected void sendName(final int dist, final int aflags) throws IOException {
 
+    @SuppressWarnings("resource")
 	final OtpOutputStream obuf = new OtpOutputStream();
-	final String str = self.node();
+	final String str = localNode.node();
 	obuf.write2BE(str.length() + 7); // 7 bytes + nodename
 	obuf.write1(AbstractNode.NTYPE_R6);
 	obuf.write2BE(dist);
-	obuf.write4BE(flags);
+	obuf.write4BE(aflags);
 	obuf.write(str.getBytes());
 
 	obuf.writeTo(socket.getOutputStream());
 
 	if (traceLevel >= handshakeThreshold) {
-	    System.out.println("-> " + "HANDSHAKE sendName" + " flags=" + flags
-		    + " dist=" + dist + " local=" + self);
+	    System.out.println("-> " + "HANDSHAKE sendName" + " flags=" + aflags
+		    + " dist=" + dist + " local=" + localNode);
 	}
     }
 
-    protected void sendChallenge(final int dist, final int flags,
+    protected void sendChallenge(final int dist, final int aflags,
 	    final int challenge) throws IOException {
 
+    @SuppressWarnings("resource")
 	final OtpOutputStream obuf = new OtpOutputStream();
-	final String str = self.node();
+	final String str = localNode.node();
 	obuf.write2BE(str.length() + 11); // 11 bytes + nodename
 	obuf.write1(AbstractNode.NTYPE_R6);
 	obuf.write2BE(dist);
-	obuf.write4BE(flags);
+	obuf.write4BE(aflags);
 	obuf.write4BE(challenge);
 	obuf.write(str.getBytes());
 
@@ -1088,8 +1097,8 @@ public abstract class AbstractConnection extends Thread {
 
 	if (traceLevel >= handshakeThreshold) {
 	    System.out.println("-> " + "HANDSHAKE sendChallenge" + " flags="
-		    + flags + " dist=" + dist + " challenge=" + challenge
-		    + " local=" + self);
+		    + aflags + " dist=" + dist + " challenge=" + challenge
+		    + " local=" + localNode);
 	}
     }
 
@@ -1100,6 +1109,7 @@ public abstract class AbstractConnection extends Thread {
 	byte[] tmpbuf;
 
 	readSock(socket, lbuf);
+    @SuppressWarnings("resource")
 	final OtpInputStream ibuf = new OtpInputStream(lbuf, 0);
 	final int len = ibuf.read2BE();
 	tmpbuf = new byte[len];
@@ -1107,41 +1117,42 @@ public abstract class AbstractConnection extends Thread {
 	return tmpbuf;
     }
 
-    protected void recvName(final OtpPeer peer) throws IOException {
+    protected void recvName(final OtpPeer apeer) throws IOException {
 
 	String hisname = "";
 
 	try {
 	    final byte[] tmpbuf = read2BytePackage();
+        @SuppressWarnings("resource")
 	    final OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);
 	    byte[] tmpname;
 	    final int len = tmpbuf.length;
-	    peer.ntype = ibuf.read1();
-	    if (peer.ntype != AbstractNode.NTYPE_R6) {
+	    apeer.ntype = ibuf.read1();
+	    if (apeer.ntype != AbstractNode.NTYPE_R6) {
 		throw new IOException("Unknown remote node type");
 	    }
-	    peer.distLow = peer.distHigh = ibuf.read2BE();
-	    if (peer.distLow < 5) {
+	    apeer.distLow = apeer.distHigh = ibuf.read2BE();
+	    if (apeer.distLow < 5) {
 		throw new IOException("Unknown remote node type");
 	    }
-	    peer.flags = ibuf.read4BE();
+	    apeer.flags = ibuf.read4BE();
 	    tmpname = new byte[len - 7];
 	    ibuf.readN(tmpname);
 	    hisname = OtpErlangString.newString(tmpname);
 	    // Set the old nodetype parameter to indicate hidden/normal status
 	    // When the old handshake is removed, the ntype should also be.
-	    if ((peer.flags & AbstractNode.dFlagPublished) != 0) {
-		peer.ntype = AbstractNode.NTYPE_R4_ERLANG;
+	    if ((apeer.flags & AbstractNode.dFlagPublished) != 0) {
+		apeer.ntype = AbstractNode.NTYPE_R4_ERLANG;
 	    } else {
-		peer.ntype = AbstractNode.NTYPE_R4_HIDDEN;
+		apeer.ntype = AbstractNode.NTYPE_R4_HIDDEN;
 	    }
 
-	    if ((peer.flags & AbstractNode.dFlagExtendedReferences) == 0) {
+	    if ((apeer.flags & AbstractNode.dFlagExtendedReferences) == 0) {
 		throw new IOException(
 			"Handshake failed - peer cannot handle extended references");
 	    }
 
-	    if ((peer.flags & AbstractNode.dFlagExtendedPidsPorts) == 0) {
+	    if ((apeer.flags & AbstractNode.dFlagExtendedPidsPorts) == 0) {
 		throw new IOException(
 			"Handshake failed - peer cannot handle extended pids and ports");
 	    }
@@ -1151,13 +1162,13 @@ public abstract class AbstractConnection extends Thread {
 	}
 
 	final int i = hisname.indexOf('@', 0);
-	peer.node = hisname;
-	peer.alive = hisname.substring(0, i);
-	peer.host = hisname.substring(i + 1, hisname.length());
+	apeer.node = hisname;
+	apeer.alive = hisname.substring(0, i);
+	apeer.host = hisname.substring(i + 1, hisname.length());
 
 	if (traceLevel >= handshakeThreshold) {
-	    System.out.println("<- " + "HANDSHAKE" + " ntype=" + peer.ntype
-		    + " dist=" + peer.distHigh + " remote=" + peer);
+	    System.out.println("<- " + "HANDSHAKE" + " ntype=" + apeer.ntype
+		    + " dist=" + apeer.distHigh + " remote=" + apeer);
 	}
     }
 
@@ -1167,6 +1178,7 @@ public abstract class AbstractConnection extends Thread {
 
 	try {
 	    final byte[] buf = read2BytePackage();
+        @SuppressWarnings("resource")
 	    final OtpInputStream ibuf = new OtpInputStream(buf, 0);
 	    peer.ntype = ibuf.read1();
 	    if (peer.ntype != AbstractNode.NTYPE_R6) {
@@ -1199,7 +1211,7 @@ public abstract class AbstractConnection extends Thread {
 
 	if (traceLevel >= handshakeThreshold) {
 	    System.out.println("<- " + "HANDSHAKE recvChallenge" + " from="
-		    + peer.node + " challenge=" + challenge + " local=" + self);
+		    + peer.node + " challenge=" + challenge + " local=" + localNode);
 	}
 
 	return challenge;
@@ -1208,6 +1220,7 @@ public abstract class AbstractConnection extends Thread {
     protected void sendChallengeReply(final int challenge, final byte[] digest)
 	    throws IOException {
 
+    @SuppressWarnings("resource")
 	final OtpOutputStream obuf = new OtpOutputStream();
 	obuf.write2BE(21);
 	obuf.write1(ChallengeReply);
@@ -1218,7 +1231,7 @@ public abstract class AbstractConnection extends Thread {
 	if (traceLevel >= handshakeThreshold) {
 	    System.out.println("-> " + "HANDSHAKE sendChallengeReply"
 		    + " challenge=" + challenge + " digest=" + hex(digest)
-		    + " local=" + self);
+		    + " local=" + localNode);
 	}
     }
 
@@ -1241,6 +1254,7 @@ public abstract class AbstractConnection extends Thread {
 
 	try {
 	    final byte[] buf = read2BytePackage();
+        @SuppressWarnings("resource")
 	    final OtpInputStream ibuf = new OtpInputStream(buf, 0);
 	    final int tag = ibuf.read1();
 	    if (tag != ChallengeReply) {
@@ -1248,7 +1262,7 @@ public abstract class AbstractConnection extends Thread {
 	    }
 	    challenge = ibuf.read4BE();
 	    ibuf.readN(her_digest);
-	    final byte[] our_digest = genDigest(our_challenge, self.cookie());
+	    final byte[] our_digest = genDigest(our_challenge, localNode.cookie());
 	    if (!digests_equals(her_digest, our_digest)) {
 		throw new OtpAuthException("Peer authentication error.");
 	    }
@@ -1259,7 +1273,7 @@ public abstract class AbstractConnection extends Thread {
 	if (traceLevel >= handshakeThreshold) {
 	    System.out.println("<- " + "HANDSHAKE recvChallengeReply"
 		    + " from=" + peer.node + " challenge=" + challenge
-		    + " digest=" + hex(her_digest) + " local=" + self);
+		    + " digest=" + hex(her_digest) + " local=" + localNode);
 	}
 
 	return challenge;
@@ -1267,6 +1281,7 @@ public abstract class AbstractConnection extends Thread {
 
     protected void sendChallengeAck(final byte[] digest) throws IOException {
 
+    @SuppressWarnings("resource")
 	final OtpOutputStream obuf = new OtpOutputStream();
 	obuf.write2BE(17);
 	obuf.write1(ChallengeAck);
@@ -1276,7 +1291,7 @@ public abstract class AbstractConnection extends Thread {
 
 	if (traceLevel >= handshakeThreshold) {
 	    System.out.println("-> " + "HANDSHAKE sendChallengeAck"
-		    + " digest=" + hex(digest) + " local=" + self);
+		    + " digest=" + hex(digest) + " local=" + localNode);
 	}
     }
 
@@ -1286,13 +1301,14 @@ public abstract class AbstractConnection extends Thread {
 	final byte[] her_digest = new byte[16];
 	try {
 	    final byte[] buf = read2BytePackage();
+        @SuppressWarnings("resource")
 	    final OtpInputStream ibuf = new OtpInputStream(buf, 0);
 	    final int tag = ibuf.read1();
 	    if (tag != ChallengeAck) {
 		throw new IOException("Handshake protocol error");
 	    }
 	    ibuf.readN(her_digest);
-	    final byte[] our_digest = genDigest(our_challenge, self.cookie());
+	    final byte[] our_digest = genDigest(our_challenge, localNode.cookie());
 	    if (!digests_equals(her_digest, our_digest)) {
 		throw new OtpAuthException("Peer authentication error.");
 	    }
@@ -1305,12 +1321,13 @@ public abstract class AbstractConnection extends Thread {
 	if (traceLevel >= handshakeThreshold) {
 	    System.out.println("<- " + "HANDSHAKE recvChallengeAck" + " from="
 		    + peer.node + " digest=" + hex(her_digest) + " local="
-		    + self);
+		    + localNode);
 	}
     }
 
     protected void sendStatus(final String status) throws IOException {
 
+    @SuppressWarnings("resource")
 	final OtpOutputStream obuf = new OtpOutputStream();
 	obuf.write2BE(status.length() + 1);
 	obuf.write1(ChallengeStatus);
@@ -1320,7 +1337,7 @@ public abstract class AbstractConnection extends Thread {
 
 	if (traceLevel >= handshakeThreshold) {
 	    System.out.println("-> " + "HANDSHAKE sendStatus" + " status="
-		    + status + " local=" + self);
+		    + status + " local=" + localNode);
 	}
     }
 
@@ -1328,6 +1345,7 @@ public abstract class AbstractConnection extends Thread {
 
 	try {
 	    final byte[] buf = read2BytePackage();
+        @SuppressWarnings("resource")
 	    final OtpInputStream ibuf = new OtpInputStream(buf, 0);
 	    final int tag = ibuf.read1();
 	    if (tag != ChallengeStatus) {
@@ -1346,7 +1364,7 @@ public abstract class AbstractConnection extends Thread {
 	}
 	if (traceLevel >= handshakeThreshold) {
 	    System.out.println("<- " + "HANDSHAKE recvStatus (ok)" + " local="
-		    + self);
+		    + localNode);
 	}
     }
 
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/AbstractNode.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/AbstractNode.java
index 3c15978b52..3bb1bbbd18 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/AbstractNode.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/AbstractNode.java
@@ -265,8 +265,7 @@ public class AbstractNode {
 	    final String drive = System.getenv("HOMEDRIVE");
 	    final String path = System.getenv("HOMEPATH");
 	    return (drive != null && path != null) ? drive + path : home;
-	} else {
-	    return home;
 	}
+    return home;
     }
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/Link.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/Link.java
index 2b085761e3..c8b4fcebde 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/Link.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/Link.java
@@ -41,11 +41,12 @@ class Link {
 	return local.equals(pid) || remote.equals(pid);
     }
 
-    public boolean equals(final OtpErlangPid local, final OtpErlangPid remote) {
-	return this.local.equals(local) && this.remote.equals(remote)
-		|| this.local.equals(remote) && this.remote.equals(local);
+    public boolean equals(final OtpErlangPid alocal, final OtpErlangPid aremote) {
+    return local.equals(alocal) && remote.equals(aremote)
+        || local.equals(aremote) && remote.equals(alocal);
     }
     
+    @Override
     public int hashCode() {
 	if (hashCodeValue == 0) {
 	    OtpErlangObject.Hash hash = new OtpErlangObject.Hash(5);
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpConnection.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpConnection.java
index e7a9d1092c..9ad02506fd 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpConnection.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpConnection.java
@@ -358,6 +358,7 @@ public class OtpConnection extends AbstractConnection {
      *                    if the connection is not active or a communication
      *                    error occurs.
      */
+    @SuppressWarnings("resource")
     public void send(final OtpErlangPid dest, final OtpErlangObject msg)
 	    throws IOException {
 	// encode and send the message
@@ -376,6 +377,7 @@ public class OtpConnection extends AbstractConnection {
      *                    if the connection is not active or a communication
      *                    error occurs.
      */
+    @SuppressWarnings("resource")
     public void send(final String dest, final OtpErlangObject msg)
 	    throws IOException {
 	// encode and send the message
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpCookedConnection.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpCookedConnection.java
index 5abf6e33f7..43b0cad222 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpCookedConnection.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpCookedConnection.java
@@ -149,6 +149,7 @@ public class OtpCookedConnection extends AbstractConnection {
     /*
      * send to pid
      */
+    @SuppressWarnings("resource")
     void send(final OtpErlangPid from, final OtpErlangPid dest,
 	    final OtpErlangObject msg) throws IOException {
 	// encode and send the message
@@ -159,6 +160,7 @@ public class OtpCookedConnection extends AbstractConnection {
      * send to remote name dest is recipient's registered name, the nodename is
      * implied by the choice of connection.
      */
+    @SuppressWarnings("resource")
     void send(final OtpErlangPid from, final String dest,
 	    final OtpErlangObject msg) throws IOException {
 	// encode and send the message
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java
index 1868dc7740..8a8ba785d9 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java
@@ -160,6 +160,7 @@ public class OtpEpmd {
 
 	try {
 	    s = new Socket((String) null, EpmdPort.get());
+        @SuppressWarnings("resource")
 	    final OtpOutputStream obuf = new OtpOutputStream();
 	    obuf.write2BE(node.alive().length() + 1);
 	    obuf.write1(stopReq);
@@ -189,6 +190,7 @@ public class OtpEpmd {
 	Socket s = null;
 
 	try {
+        @SuppressWarnings("resource")
 	    final OtpOutputStream obuf = new OtpOutputStream();
 	    s = new Socket(node.host(), EpmdPort.get());
 
@@ -219,6 +221,7 @@ public class OtpEpmd {
 			+ node.host() + " when looking up " + node.alive());
 	    }
 
+        @SuppressWarnings("resource")
 	    final OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);
 
 	    final int response = ibuf.read1();
@@ -279,6 +282,7 @@ public class OtpEpmd {
 	Socket s = null;
 
 	try {
+        @SuppressWarnings("resource")
 	    final OtpOutputStream obuf = new OtpOutputStream();
 	    s = new Socket((String) null, EpmdPort.get());
 
@@ -310,13 +314,12 @@ public class OtpEpmd {
 	    final int n = s.getInputStream().read(tmpbuf);
 
 	    if (n < 0) {
-		if (s != null) {
 		    s.close();
-		}
 		throw new IOException("Nameserver not responding on "
 			+ node.host() + " when publishing " + node.alive());
 	    }
 
+        @SuppressWarnings("resource")
 	    final OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);
 
 	    final int response = ibuf.read1();
@@ -341,9 +344,7 @@ public class OtpEpmd {
 	    throw new IOException("Nameserver not responding on " + node.host()
 		    + " when publishing " + node.alive());
 	} catch (final OtpErlangDecodeException e) {
-	    if (s != null) {
 		s.close();
-	    }
 	    if (traceLevel >= traceThreshold) {
 		System.out.println("<- (invalid response)");
 	    }
@@ -351,9 +352,7 @@ public class OtpEpmd {
 		    + " when publishing " + node.alive());
 	}
 
-	if (s != null) {
 	    s.close();
-	}
 	return null;
     }
 
@@ -366,6 +365,7 @@ public class OtpEpmd {
 	Socket s = null;
 
 	try {
+        @SuppressWarnings("resource")
 	    final OtpOutputStream obuf = new OtpOutputStream();
 	    try {
 		s = new Socket(address, EpmdPort.get());
@@ -390,6 +390,7 @@ public class OtpEpmd {
 		    out.write(buffer, 0, bytesRead);
 		}
 		final byte[] tmpbuf = out.toByteArray();
+        @SuppressWarnings("resource")
 		final OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);
 		ibuf.read4BE(); // read port int
 		// final int port = ibuf.read4BE();
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangAtom.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangAtom.java
index 0371740b26..bff3e2c0e3 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangAtom.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangAtom.java
@@ -18,17 +18,15 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang atoms. Atoms can be created from
  * strings whose length is not more than {@link #maxAtomLength maxAtomLength}
  * characters.
  */
-public class OtpErlangAtom extends OtpErlangObject implements Serializable,
-	Cloneable {
+public class OtpErlangAtom extends OtpErlangObject {
     // don't change this!
-    static final long serialVersionUID = -3204386396807876641L;
+    private static final long serialVersionUID = -3204386396807876641L;
 
     /** The maximun allowed length of an atom, in characters */
     public static final int maxAtomLength = 0xff; // one byte length
@@ -119,9 +117,8 @@ public class OtpErlangAtom extends OtpErlangObject implements Serializable,
     public String toString() {
 	if (atomNeedsQuoting(atom)) {
 	    return "'" + escapeSpecialChars(atom) + "'";
-	} else {
-	    return atom;
 	}
+    return atom;
     }
 
     /**
@@ -139,8 +136,8 @@ public class OtpErlangAtom extends OtpErlangObject implements Serializable,
 	    return false;
 	}
 
-	final OtpErlangAtom atom = (OtpErlangAtom) o;
-	return this.atom.compareTo(atom.atom) == 0;
+	final OtpErlangAtom other = (OtpErlangAtom) o;
+	return this.atom.compareTo(other.atom) == 0;
     }
     
     @Override
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBinary.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBinary.java
index a9eaad540e..0891781f8d 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBinary.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBinary.java
@@ -18,16 +18,14 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang binaries. Anything that can be
  * represented as a sequence of bytes can be made into an Erlang binary.
  */
-public class OtpErlangBinary extends OtpErlangBitstr implements Serializable,
-	Cloneable {
+public class OtpErlangBinary extends OtpErlangBitstr {
     // don't change this!
-    static final long serialVersionUID = -3781009633593609217L;
+    private static final long serialVersionUID = -3781009633593609217L;
 
     /**
      * Create a binary from a byte array
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java
index 97897fe182..8cb4e0e685 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBitstr.java
@@ -20,17 +20,15 @@ package com.ericsson.otp.erlang;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang bitstrs. An Erlang bitstr is an
  * Erlang binary with a length not an integral number of bytes (8-bit). Anything
  * can be represented as a sequence of bytes can be made into an Erlang bitstr.
  */
-public class OtpErlangBitstr extends OtpErlangObject implements Serializable,
-	Cloneable {
+public class OtpErlangBitstr extends OtpErlangObject {
     // don't change this!
-    static final long serialVersionUID = -3781009633593609217L;
+    private static final long serialVersionUID = -3781009633593609217L;
 
     protected byte[] bin;
     protected int pad_bits;
@@ -63,18 +61,18 @@ public class OtpErlangBitstr extends OtpErlangObject implements Serializable,
 	check_bitstr(this.bin, this.pad_bits);
     }
 
-    private void check_bitstr(final byte[] bin, final int pad_bits) {
-	if (pad_bits < 0 || 7 < pad_bits) {
+    private void check_bitstr(final byte[] abin, final int a_pad_bits) {
+	if (a_pad_bits < 0 || 7 < a_pad_bits) {
 	    throw new java.lang.IllegalArgumentException(
 		    "Padding must be in range 0..7");
 	}
-	if (pad_bits != 0 && bin.length == 0) {
+	if (a_pad_bits != 0 && abin.length == 0) {
 	    throw new java.lang.IllegalArgumentException(
 		    "Padding on zero length bitstr");
 	}
-	if (bin.length != 0) {
+	if (abin.length != 0) {
 	    // Make sure padding is zero
-	    bin[bin.length - 1] &= ~((1 << pad_bits) - 1);
+	    abin[abin.length - 1] &= ~((1 << a_pad_bits) - 1);
 	}
     }
 
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBoolean.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBoolean.java
index b97b5b7d90..eecd2ea288 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBoolean.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangBoolean.java
@@ -18,14 +18,12 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang booleans, which are special cases of
  * atoms with values 'true' and 'false'.
  */
-public class OtpErlangBoolean extends OtpErlangAtom implements Serializable,
-	Cloneable {
+public class OtpErlangBoolean extends OtpErlangAtom {
     // don't change this!
     static final long serialVersionUID = 1087178844844988393L;
 
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangByte.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangByte.java
index 2d598c119e..eb6f3d8aba 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangByte.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangByte.java
@@ -18,15 +18,13 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang integral types.
  */
-public class OtpErlangByte extends OtpErlangLong implements Serializable,
-	Cloneable {
+public class OtpErlangByte extends OtpErlangLong {
     // don't change this!
-    static final long serialVersionUID = 5778019796466613446L;
+    private static final long serialVersionUID = 5778019796466613446L;
 
     /**
      * Create an Erlang integer from the given value.
@@ -56,6 +54,6 @@ public class OtpErlangByte extends OtpErlangLong implements Serializable,
 	    throws OtpErlangRangeException, OtpErlangDecodeException {
 	super(buf);
 
-	final byte i = byteValue();
+    byteValue();
     }
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangChar.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangChar.java
index b442bbcec1..e7c6dd8ad4 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangChar.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangChar.java
@@ -18,15 +18,13 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang integral types.
  */
-public class OtpErlangChar extends OtpErlangLong implements Serializable,
-	Cloneable {
+public class OtpErlangChar extends OtpErlangLong {
     // don't change this!
-    static final long serialVersionUID = 3225337815669398204L;
+    private static final long serialVersionUID = 3225337815669398204L;
 
     /**
      * Create an Erlang integer from the given value.
@@ -56,6 +54,6 @@ public class OtpErlangChar extends OtpErlangLong implements Serializable,
 	    throws OtpErlangRangeException, OtpErlangDecodeException {
 	super(buf);
 
-	final char i = charValue();
+    charValue();
     }
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangDecodeException.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangDecodeException.java
index db55deaedf..6986e26908 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangDecodeException.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangDecodeException.java
@@ -26,6 +26,8 @@ package com.ericsson.otp.erlang;
  * @see OtpInputStream
  */
 public class OtpErlangDecodeException extends OtpErlangException {
+    private static final long serialVersionUID = 1L;
+
     /**
      * Provides a detailed message.
      */
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangDouble.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangDouble.java
index 793940e858..e92ce11431 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangDouble.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangDouble.java
@@ -18,7 +18,6 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang floats and doubles. Erlang defines
@@ -26,10 +25,9 @@ import java.io.Serializable;
  * {@link OtpErlangFloat} are used to provide representations corresponding to
  * the Java types Double and Float.
  */
-public class OtpErlangDouble extends OtpErlangObject implements Serializable,
-	Cloneable {
+public class OtpErlangDouble extends OtpErlangObject {
     // don't change this!
-    static final long serialVersionUID = 132947104811974021L;
+    private static final long serialVersionUID = 132947104811974021L;
 
     private final double d;
 
@@ -120,8 +118,8 @@ public class OtpErlangDouble extends OtpErlangObject implements Serializable,
 	    return false;
 	}
 
-	final OtpErlangDouble d = (OtpErlangDouble) o;
-	return this.d == d.d;
+	final OtpErlangDouble other = (OtpErlangDouble) o;
+	return this.d == other.d;
     }
     
     @Override
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangFloat.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangFloat.java
index 8662b74c53..7d48f848f0 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangFloat.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangFloat.java
@@ -18,15 +18,13 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang floats and doubles.
  */
-public class OtpErlangFloat extends OtpErlangDouble implements Serializable,
-	Cloneable {
+public class OtpErlangFloat extends OtpErlangDouble {
     // don't change this!
-    static final long serialVersionUID = -2231546377289456934L;
+    private static final long serialVersionUID = -2231546377289456934L;
 
     /**
      * Create an Erlang float from the given float value.
@@ -53,6 +51,6 @@ public class OtpErlangFloat extends OtpErlangDouble implements Serializable,
 	    throws OtpErlangDecodeException, OtpErlangRangeException {
 	super(buf);
 
-	final float f = floatValue();
+    floatValue();
     }
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangFun.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangFun.java
index c52909acc5..05fa0cbb23 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangFun.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangFun.java
@@ -18,10 +18,9 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 import java.util.Arrays;
 
-public class OtpErlangFun extends OtpErlangObject implements Serializable {
+public class OtpErlangFun extends OtpErlangObject {
     // don't change this!
     private static final long serialVersionUID = -3423031125356706472L;
 
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangInt.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangInt.java
index d947421459..741fc29dd0 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangInt.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangInt.java
@@ -18,15 +18,13 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang integral types.
  */
-public class OtpErlangInt extends OtpErlangLong implements Serializable,
-	Cloneable {
+public class OtpErlangInt extends OtpErlangLong {
     // don't change this!
-    static final long serialVersionUID = 1229430977614805556L;
+    private static final long serialVersionUID = 1229430977614805556L;
 
     /**
      * Create an Erlang integer from the given value.
@@ -56,6 +54,6 @@ public class OtpErlangInt extends OtpErlangLong implements Serializable,
 	    throws OtpErlangRangeException, OtpErlangDecodeException {
 	super(buf);
 
-	final int j = intValue();
+    intValue();
     }
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangList.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangList.java
index e363fdb457..9f7c5f5499 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangList.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangList.java
@@ -18,7 +18,6 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
 
@@ -30,9 +29,9 @@ import java.util.NoSuchElementException;
  * The arity of the list is the number of elements it contains.
  */
 public class OtpErlangList extends OtpErlangObject implements
-	Iterable<OtpErlangObject>, Serializable, Cloneable {
+    Iterable<OtpErlangObject> {
     // don't change this!
-    static final long serialVersionUID = 5999112769036676548L;
+    private static final long serialVersionUID = 5999112769036676548L;
 
     private static final OtpErlangObject[] NO_ELEMENTS = new OtpErlangObject[0];
 
@@ -187,12 +186,11 @@ public class OtpErlangList extends OtpErlangObject implements
     public OtpErlangObject[] elements() {
 	if (arity() == 0) {
 	    return NO_ELEMENTS;
-	} else {
+    }
 	    final OtpErlangObject[] res = new OtpErlangObject[arity()];
 	    System.arraycopy(elems, 0, res, 0, res.length);
 	    return res;
 	}
-    }
 
     /**
      * Get the string representation of the list.
@@ -361,9 +359,8 @@ public class OtpErlangList extends OtpErlangObject implements
 	if (arity >= n) {
 	    if (arity == n && lastTail != null) {
 		return lastTail;
-	    } else {
-		return new SubList(this, n);
 	    }
+        return new SubList(this, n);
 	}
 	return null;
     }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangLong.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangLong.java
index 84b1355c54..c6021a6ae1 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangLong.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangLong.java
@@ -18,7 +18,6 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 import java.math.BigInteger;
 
 /**
@@ -30,10 +29,9 @@ import java.math.BigInteger;
  * {@link OtpErlangUInt} and {@link OtpErlangUShort} are provided for Corba
  * compatibility. See the documentation for IC for more information.
  */
-public class OtpErlangLong extends OtpErlangObject implements Serializable,
-	Cloneable {
+public class OtpErlangLong extends OtpErlangObject {
     // don't change this!
-    static final long serialVersionUID = 1610466859236755096L;
+    private static final long serialVersionUID = 1610466859236755096L;
 
     private long val;
     private BigInteger bigVal = null;
@@ -94,9 +92,8 @@ public class OtpErlangLong extends OtpErlangObject implements Serializable,
     public BigInteger bigIntegerValue() {
 	if (bigVal != null) {
 	    return bigVal;
-	} else {
-	    return BigInteger.valueOf(val);
 	}
+    return BigInteger.valueOf(val);
     }
 
     /**
@@ -109,9 +106,8 @@ public class OtpErlangLong extends OtpErlangObject implements Serializable,
     public long longValue() {
 	if (bigVal != null) {
 	    return bigVal.longValue();
-	} else {
-	    return val;
 	}
+    return val;
     }
 
     /**
@@ -159,7 +155,7 @@ public class OtpErlangLong extends OtpErlangObject implements Serializable,
 	}
 	if (val == 0 || val == -1) {
 	    return 0;
-	} else {
+    }
 	    // Binary search for bit length
 	    int i = 32; // mask length
 	    long m = (1L << i) - 1; // AND mask with ones in little end
@@ -193,7 +189,6 @@ public class OtpErlangLong extends OtpErlangObject implements Serializable,
 	    }
 	    return i;
 	}
-    }
 
     /**
      * Return the signum function of this object.
@@ -203,9 +198,8 @@ public class OtpErlangLong extends OtpErlangObject implements Serializable,
     public int signum() {
 	if (bigVal != null) {
 	    return bigVal.signum();
-	} else {
-	    return val > 0 ? 1 : val < 0 ? -1 : 0;
 	}
+    return val > 0 ? 1 : val < 0 ? -1 : 0;
     }
 
     /**
@@ -342,9 +336,8 @@ public class OtpErlangLong extends OtpErlangObject implements Serializable,
     public String toString() {
 	if (bigVal != null) {
 	    return "" + bigVal;
-	} else {
-	    return "" + val;
 	}
+    return "" + val;
     }
 
     /**
@@ -392,8 +385,7 @@ public class OtpErlangLong extends OtpErlangObject implements Serializable,
     protected int doHashCode() {
 	if (bigVal != null) {
 	    return bigVal.hashCode();
-	} else {
-	    return BigInteger.valueOf(val).hashCode();
 	}
+    return BigInteger.valueOf(val).hashCode();
     }
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangMap.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangMap.java
index 0254edd5da..7f1a64b87d 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangMap.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangMap.java
@@ -18,7 +18,6 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang maps. Maps are created from one or
@@ -29,8 +28,7 @@ import java.io.Serializable;
  * values can be retrieved as arrays and the value for a key can be queried.
  * 
  */
-public class OtpErlangMap extends OtpErlangObject implements Serializable,
-	Cloneable {
+public class OtpErlangMap extends OtpErlangObject {
     // don't change this!
     private static final long serialVersionUID = -6410770117696198497L;
 
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangObject.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangObject.java
index 81220c5685..5215e5887b 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangObject.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangObject.java
@@ -171,14 +171,14 @@ public abstract class OtpErlangObject implements Serializable, Cloneable {
 	    for (j = 0, k = 0;  
 		 j + 4 < b.length;  
 		 j += 4, k += 1, k %= 3) {
-		abc[k] += ((int)b[j+0] & 0xFF) + ((int)b[j+1]<<8 & 0xFF00)
-		    + ((int)b[j+2]<<16 & 0xFF0000) + ((int)b[j+3]<<24);
+        abc[k] += (b[j+0] & 0xFF) + (b[j+1]<<8 & 0xFF00)
+            + (b[j+2]<<16 & 0xFF0000) + (b[j+3]<<24);
 		mix();
 	    }
 	    for (int n = 0, m = 0xFF;
 		 j < b.length;
 		 j++, n += 8, m <<= 8) {
-		abc[k] += (int)b[j]<<n & m;
+        abc[k] += b[j]<<n & m;
 	    }
 	    mix();
 	}
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java
index f75e4353d0..4c9f5c78a3 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java
@@ -18,16 +18,14 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang PIDs. PIDs represent Erlang
  * processes and consist of a nodename and a number of integers.
  */
-public class OtpErlangPid extends OtpErlangObject implements Serializable,
-	Cloneable, Comparable<Object> {
+public class OtpErlangPid extends OtpErlangObject implements Comparable<Object> {
     // don't change this!
-    static final long serialVersionUID = 1664394142301803659L;
+    private static final long serialVersionUID = 1664394142301803659L;
 
     private final String node;
     private final int id;
@@ -197,14 +195,11 @@ public class OtpErlangPid extends OtpErlangObject implements Serializable,
 	    if (serial == pid.serial) {
 		if (id == pid.id) {
 		    return node.compareTo(pid.node);
-		} else {
+        }
 		    return id - pid.id;
 		}
-	    } else {
 		return serial - pid.serial;
 	    }
-	} else {
 	    return creation - pid.creation;
 	}
     }
-}
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java
index 2a0eab0a9c..8557e17325 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java
@@ -18,15 +18,13 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang ports.
  */
-public class OtpErlangPort extends OtpErlangObject implements Serializable,
-	Cloneable {
+public class OtpErlangPort extends OtpErlangObject {
     // don't change this!
-    static final long serialVersionUID = 4037115468007644704L;
+    private static final long serialVersionUID = 4037115468007644704L;
 
     private final String node;
     private final int id;
@@ -40,6 +38,7 @@ public class OtpErlangPort extends OtpErlangObject implements Serializable,
      * 
      * @deprecated use OtpLocalNode:createPort() instead
      */
+    @SuppressWarnings("unused")
     private OtpErlangPort(final OtpSelf self) {
 	final OtpErlangPort p = self.createPort();
 
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java
index 8056439962..13a83333fa 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java
@@ -18,17 +18,15 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang refs. There are two styles of Erlang
  * refs, old style (one id value) and new style (array of id values). This class
  * manages both types.
  */
-public class OtpErlangRef extends OtpErlangObject implements Serializable,
-	Cloneable {
+public class OtpErlangRef extends OtpErlangObject {
     // don't change this!
-    static final long serialVersionUID = -7022666480768586521L;
+    private static final long serialVersionUID = -7022666480768586521L;
 
     private final String node;
     private final int creation;
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangShort.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangShort.java
index cd232570dd..6ef56defbd 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangShort.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangShort.java
@@ -18,13 +18,11 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang integral types.
  */
-public class OtpErlangShort extends OtpErlangLong implements Serializable,
-	Cloneable {
+public class OtpErlangShort extends OtpErlangLong {
     // don't change this!
     static final long serialVersionUID = 7162345156603088099L;
 
@@ -57,7 +55,7 @@ public class OtpErlangShort extends OtpErlangLong implements Serializable,
 	    throws OtpErlangRangeException, OtpErlangDecodeException {
 	super(buf);
 
-	final short j = shortValue();
+    shortValue();
     }
 
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangString.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangString.java
index a5e202c473..1bccfcc567 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangString.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangString.java
@@ -18,17 +18,14 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
-import java.lang.Character;
 import java.io.UnsupportedEncodingException;
 
 /**
  * Provides a Java representation of Erlang strings.
  */
-public class OtpErlangString extends OtpErlangObject implements Serializable,
-	Cloneable {
+public class OtpErlangString extends OtpErlangObject {
     // don't change this!
-    static final long serialVersionUID = -7053595217604929233L;
+    private static final long serialVersionUID = -7053595217604929233L;
 
     private final String str;
 
@@ -138,6 +135,7 @@ public class OtpErlangString extends OtpErlangObject implements Serializable,
 	return false;
     }
     
+    @Override
     protected int doHashCode() {
 	return str.hashCode();
     }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangTuple.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangTuple.java
index bffce7f14d..dffaa530cd 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangTuple.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangTuple.java
@@ -18,7 +18,6 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang tuples. Tuples are created from one
@@ -29,10 +28,9 @@ import java.io.Serializable;
  * indexed from 0 to (arity-1) and can be retrieved individually by using the
  * appropriate index.
  */
-public class OtpErlangTuple extends OtpErlangObject implements Serializable,
-	Cloneable {
+public class OtpErlangTuple extends OtpErlangObject {
     // don't change this!
-    static final long serialVersionUID = 9163498658004915935L;
+    private static final long serialVersionUID = 9163498658004915935L;
 
     private static final OtpErlangObject[] NO_ELEMENTS = new OtpErlangObject[0];
 
@@ -51,9 +49,8 @@ public class OtpErlangTuple extends OtpErlangObject implements Serializable,
 	if (elem == null) {
 	    throw new java.lang.IllegalArgumentException(
 		    "Tuple element cannot be null");
-	} else {
-	    elems = new OtpErlangObject[] { elem };
 	}
+    elems = new OtpErlangObject[] { elem };
     }
 
     /**
@@ -242,6 +239,7 @@ public class OtpErlangTuple extends OtpErlangObject implements Serializable,
 	return true;
     }
     
+    @Override
     protected int doHashCode() {
 	OtpErlangObject.Hash hash = new OtpErlangObject.Hash(9);
 	final int a = arity();
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangUInt.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangUInt.java
index f01354d821..a02996e437 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangUInt.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangUInt.java
@@ -18,13 +18,11 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang integral types.
  */
-public class OtpErlangUInt extends OtpErlangLong implements Serializable,
-	Cloneable {
+public class OtpErlangUInt extends OtpErlangLong {
     // don't change this!
     static final long serialVersionUID = -1450956122937471885L;
 
@@ -40,7 +38,7 @@ public class OtpErlangUInt extends OtpErlangLong implements Serializable,
     public OtpErlangUInt(final int i) throws OtpErlangRangeException {
 	super(i);
 
-	final int j = uIntValue();
+    uIntValue();
     }
 
     /**
@@ -62,6 +60,6 @@ public class OtpErlangUInt extends OtpErlangLong implements Serializable,
 	    throws OtpErlangRangeException, OtpErlangDecodeException {
 	super(buf);
 
-	final int j = uIntValue();
+    uIntValue();
     }
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangUShort.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangUShort.java
index 6b6bc7a56b..e9d251f815 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangUShort.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangUShort.java
@@ -18,13 +18,11 @@
  */
 package com.ericsson.otp.erlang;
 
-import java.io.Serializable;
 
 /**
  * Provides a Java representation of Erlang integral types.
  */
-public class OtpErlangUShort extends OtpErlangLong implements Serializable,
-	Cloneable {
+public class OtpErlangUShort extends OtpErlangLong {
     // don't change this!
     static final long serialVersionUID = 300370950578307246L;
 
@@ -40,7 +38,7 @@ public class OtpErlangUShort extends OtpErlangLong implements Serializable,
     public OtpErlangUShort(final short s) throws OtpErlangRangeException {
 	super(s);
 
-	final short j = uShortValue();
+    uShortValue();
     }
 
     /**
@@ -62,6 +60,6 @@ public class OtpErlangUShort extends OtpErlangLong implements Serializable,
 	    throws OtpErlangRangeException, OtpErlangDecodeException {
 	super(buf);
 
-	final short j = uShortValue();
+    uShortValue();
     }
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpException.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpException.java
index 33d25b6021..874c7da104 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpException.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpException.java
@@ -22,6 +22,8 @@ package com.ericsson.otp.erlang;
  * Base class for the other OTP exception classes.
  */
 public abstract class OtpException extends Exception {
+    private static final long serialVersionUID = 1L;
+
     /**
      * Provides no message.
      */
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java
index f813594541..bab0629382 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java
@@ -85,16 +85,17 @@ public class OtpInputStream extends ByteArrayInputStream {
      * 
      * @return the previous position in the stream.
      */
-    public int setPos(int pos) {
+    public int setPos(final int pos) {
 	final int oldpos = super.pos;
 
+    int apos = pos;
 	if (pos > super.count) {
-	    pos = super.count;
+        apos = super.count;
 	} else if (pos < 0) {
-	    pos = 0;
+        apos = 0;
 	}
 
-	super.pos = pos;
+    super.pos = apos;
 
 	return oldpos;
     }
@@ -108,8 +109,8 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @exception OtpErlangDecodeException
      *                if the next byte cannot be read.
      */
-    public int readN(final byte[] buf) throws OtpErlangDecodeException {
-	return this.readN(buf, 0, buf.length);
+    public int readN(final byte[] abuf) throws OtpErlangDecodeException {
+	return this.readN(abuf, 0, abuf.length);
     }
 
     /**
@@ -121,12 +122,12 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @exception OtpErlangDecodeException
      *                if the next byte cannot be read.
      */
-    public int readN(final byte[] buf, final int off, final int len)
+    public int readN(final byte[] abuf, final int off, final int len)
 	    throws OtpErlangDecodeException {
 	if (len == 0 && available() == 0) {
 	    return 0;
 	}
-	final int i = super.read(buf, off, len);
+	final int i = super.read(abuf, off, len);
 	if (i < 0) {
 	    throw new OtpErlangDecodeException("Cannot read from input stream");
 	}
@@ -214,7 +215,6 @@ public class OtpInputStream extends ByteArrayInputStream {
 	} catch (final IOException e) {
 	    throw new OtpErlangDecodeException("Cannot read from input stream");
 	}
-	;
 	return (b[0] << 8 & 0xff00) + (b[1] & 0xff);
     }
 
@@ -233,7 +233,6 @@ public class OtpInputStream extends ByteArrayInputStream {
 	} catch (final IOException e) {
 	    throw new OtpErlangDecodeException("Cannot read from input stream");
 	}
-	;
 	return (b[0] << 24 & 0xff000000) + (b[1] << 16 & 0xff0000)
 		+ (b[2] << 8 & 0xff00) + (b[3] & 0xff);
     }
@@ -253,7 +252,6 @@ public class OtpInputStream extends ByteArrayInputStream {
 	} catch (final IOException e) {
 	    throw new OtpErlangDecodeException("Cannot read from input stream");
 	}
-	;
 	return (b[1] << 8 & 0xff00) + (b[0] & 0xff);
     }
 
@@ -272,7 +270,6 @@ public class OtpInputStream extends ByteArrayInputStream {
 	} catch (final IOException e) {
 	    throw new OtpErlangDecodeException("Cannot read from input stream");
 	}
-	;
 	return (b[3] << 24 & 0xff000000) + (b[2] << 16 & 0xff0000)
 		+ (b[1] << 8 & 0xff00) + (b[0] & 0xff);
     }
@@ -288,17 +285,17 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @exception OtpErlangDecodeException
      *                if the next byte cannot be read.
      */
-    public long readLE(int n) throws OtpErlangDecodeException {
+    public long readLE(final int n) throws OtpErlangDecodeException {
 	final byte[] b = new byte[n];
 	try {
 	    super.read(b);
 	} catch (final IOException e) {
 	    throw new OtpErlangDecodeException("Cannot read from input stream");
 	}
-	;
 	long v = 0;
-	while (n-- > 0) {
-	    v = v << 8 | (long) b[n] & 0xff;
+    int i = n;
+    while (i-- > 0) {
+        v = v << 8 | (long) b[i] & 0xff;
 	}
 	return v;
     }
@@ -321,7 +318,6 @@ public class OtpInputStream extends ByteArrayInputStream {
 	} catch (final IOException e) {
 	    throw new OtpErlangDecodeException("Cannot read from input stream");
 	}
-	;
 	long v = 0;
 	for (int i = 0; i < n; i++) {
 	    v = v << 8 | (long) b[i] & 0xff;
@@ -350,6 +346,7 @@ public class OtpInputStream extends ByteArrayInputStream {
      * @exception OtpErlangDecodeException
      *                if the next term in the stream is not an atom.
      */
+    @SuppressWarnings("fallthrough")
     public String read_atom() throws OtpErlangDecodeException {
 	int tag;
 	int len = -1;
@@ -382,7 +379,7 @@ public class OtpInputStream extends ByteArrayInputStream {
 
 	case OtpExternal.smallAtomUtf8Tag:
 	    len = read1();
-	    /* fall through */
+        // fall-through
 	case OtpExternal.atomUtf8Tag:
 	    if (len < 0) {
 		len = read2BE();
@@ -1055,7 +1052,7 @@ public class OtpInputStream extends ByteArrayInputStream {
 	    }
 	    return new OtpErlangFun(pid, module, index, uniq, freeVars);
 	} else if (tag == OtpExternal.newFunTag) {
-	    final int n = read4BE();
+        read4BE();
 	    final int arity = read1();
 	    final byte[] md5 = new byte[16];
 	    readN(md5);
@@ -1149,13 +1146,13 @@ public class OtpInputStream extends ByteArrayInputStream {
 	}
 
 	final int size = read4BE();
-	final byte[] buf = new byte[size];
+	final byte[] abuf = new byte[size];
 	final java.util.zip.InflaterInputStream is = 
 	    new java.util.zip.InflaterInputStream(this, new java.util.zip.Inflater(), size);
 	int curPos = 0;
 	try {
 	    int curRead;
-	    while(curPos < size && (curRead = is.read(buf, curPos, size - curPos)) != -1) {
+	    while(curPos < size && (curRead = is.read(abuf, curPos, size - curPos)) != -1) {
 		curPos += curRead;
 	    }
 	    if (curPos != size) {
@@ -1166,7 +1163,8 @@ public class OtpInputStream extends ByteArrayInputStream {
 	    throw new OtpErlangDecodeException("Cannot read from input stream");
 	}
 
-	final OtpInputStream ois = new OtpInputStream(buf, flags);
+    @SuppressWarnings("resource")
+	final OtpInputStream ois = new OtpInputStream(abuf, flags);
 	return ois.read_any();
     }
 
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMD5.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMD5.java
index 903a446258..a5a4d86602 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMD5.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMD5.java
@@ -101,8 +101,11 @@ class OtpMD5 {
 
     private void to_buffer(int to_start, final int[] from, int from_start,
 	    int num) {
-	while (num-- > 0) {
-	    buffer[to_start++] = from[from_start++];
+    int ix = num;
+    int to_ix = to_start;
+    int from_ix = from_start;
+    while (ix-- > 0) {
+        buffer[to_ix++] = from[from_ix++];
 	}
     }
 
@@ -121,7 +124,7 @@ class OtpMD5 {
 
 	count[1] = plus(count[1], shr(inlen, 29));
 
-	/* dumpstate(); */
+    // dumpstate();
 
 	if (inlen >= partlen) {
 	    to_buffer(index, bytes, 0, (int) partlen);
@@ -144,6 +147,7 @@ class OtpMD5 {
 
     }
 
+    @SuppressWarnings("unused")
     private void dumpstate() {
 	System.out.println("state = {" + state[0] + ", " + state[1] + ", "
 		+ state[2] + ", " + state[3] + "}");
@@ -185,30 +189,30 @@ class OtpMD5 {
 
     private long FF(long a, final long b, final long c, final long d,
 	    final long x, final long s, final long ac) {
-	a = plus(a, plus(plus(F(b, c, d), x), ac));
-	a = ROTATE_LEFT(a, s);
-	return plus(a, b);
+    long tmp = plus(a, plus(plus(F(b, c, d), x), ac));
+    tmp = ROTATE_LEFT(tmp, s);
+    return plus(tmp, b);
     }
 
     private long GG(long a, final long b, final long c, final long d,
 	    final long x, final long s, final long ac) {
-	a = plus(a, plus(plus(G(b, c, d), x), ac));
-	a = ROTATE_LEFT(a, s);
-	return plus(a, b);
+    long tmp = plus(a, plus(plus(G(b, c, d), x), ac));
+    tmp = ROTATE_LEFT(tmp, s);
+    return plus(tmp, b);
     }
 
     private long HH(long a, final long b, final long c, final long d,
 	    final long x, final long s, final long ac) {
-	a = plus(a, plus(plus(H(b, c, d), x), ac));
-	a = ROTATE_LEFT(a, s);
-	return plus(a, b);
+    long tmp = plus(a, plus(plus(H(b, c, d), x), ac));
+    tmp = ROTATE_LEFT(tmp, s);
+    return plus(tmp, b);
     }
 
     private long II(long a, final long b, final long c, final long d,
 	    final long x, final long s, final long ac) {
-	a = plus(a, plus(plus(I(b, c, d), x), ac));
-	a = ROTATE_LEFT(a, s);
-	return plus(a, b);
+    long tmp = plus(a, plus(plus(I(b, c, d), x), ac));
+    tmp = ROTATE_LEFT(tmp, s);
+    return plus(tmp, b);
     }
 
     private void decode(final long output[], final int input[],
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMbox.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMbox.java
index 4a4a1e7f8f..fc592c222c 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMbox.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMbox.java
@@ -128,14 +128,14 @@ public class OtpMbox {
      * supercede that name.
      * </p>
      * 
-     * @param name
+     * @param aname
      *                the name to register for the mailbox. Specify null to
      *                unregister the existing name from this mailbox.
      * 
      * @return true if the name was available, or false otherwise.
      */
-    public synchronized boolean registerName(final String name) {
-	return home.registerName(name, this);
+    public synchronized boolean registerName(final String aname) {
+	return home.registerName(aname, this);
     }
 
     /**
@@ -350,21 +350,21 @@ public class OtpMbox {
      * Send a message to a named mailbox created from the same node as this
      * mailbox.
      * 
-     * @param name
+     * @param aname
      *                the registered name of recipient mailbox.
      * 
      * @param msg
      *                the body of the message to send.
      * 
      */
-    public void send(final String name, final OtpErlangObject msg) {
-	home.deliver(new OtpMsg(self, name, (OtpErlangObject) msg.clone()));
+    public void send(final String aname, final OtpErlangObject msg) {
+	home.deliver(new OtpMsg(self, aname, (OtpErlangObject) msg.clone()));
     }
 
     /**
      * Send a message to a named mailbox created from another node.
      * 
-     * @param name
+     * @param aname
      *                the registered name of recipient mailbox.
      * 
      * @param node
@@ -375,23 +375,23 @@ public class OtpMbox {
      *                the body of the message to send.
      * 
      */
-    public void send(final String name, final String node,
+    public void send(final String aname, final String node,
 	    final OtpErlangObject msg) {
 	try {
 	    final String currentNode = home.node();
 	    if (node.equals(currentNode)) {
-		send(name, msg);
+		send(aname, msg);
 	    } else if (node.indexOf('@', 0) < 0
 		    && node.equals(currentNode.substring(0, currentNode
 			    .indexOf('@', 0)))) {
-		send(name, msg);
+		send(aname, msg);
 	    } else {
 		// other node
 		final OtpCookedConnection conn = home.getConnection(node);
 		if (conn == null) {
 		    return;
 		}
-		conn.send(self, name, msg);
+		conn.send(self, aname, msg);
 	    }
 	} catch (final Exception e) {
 	}
@@ -629,8 +629,8 @@ public class OtpMbox {
      * @return the {@link OtpErlangPid pid} corresponding to the registered
      *         name, or null if the name is not known on this node.
      */
-    public OtpErlangPid whereis(final String name) {
-	return home.whereis(name);
+    public OtpErlangPid whereis(final String aname) {
+	return home.whereis(aname);
     }
 
     /**
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMsg.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMsg.java
index 31a5d0fb8f..7c5bc69361 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMsg.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpMsg.java
@@ -129,13 +129,14 @@ public class OtpMsg {
     }
 
     // other message types (link, unlink)
-    OtpMsg(int tag, final OtpErlangPid from, final OtpErlangPid to) {
+    OtpMsg(final int tag, final OtpErlangPid from, final OtpErlangPid to) {
 	// convert TT-tags to equiv non-TT versions
+    int atag = tag;
 	if (tag > 10) {
-	    tag -= 10;
+        atag -= 10;
 	}
 
-	this.tag = tag;
+    this.tag = atag;
 	this.from = from;
 	this.to = to;
     }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpNode.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpNode.java
index 7ead0b9c54..68addb9f2c 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpNode.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpNode.java
@@ -74,7 +74,7 @@ public class OtpNode extends OtpLocalNode {
     OtpNodeStatus handler;
 
     // flags
-    private int flags = 0;
+    private int connFlags = 0;
 
     /**
      * <p>
@@ -143,12 +143,12 @@ public class OtpNode extends OtpLocalNode {
 	init(port);
     }
 
-    private synchronized void init(final int port) throws IOException {
+    private synchronized void init(final int aport) throws IOException {
 	if (!initDone) {
 	    connections = new Hashtable<String, OtpCookedConnection>(17,
 		    (float) 0.95);
 	    mboxes = new Mailboxes();
-	    acceptor = new Acceptor(port);
+	    acceptor = new Acceptor(aport);
 	    initDone = true;
 	}
     }
@@ -314,13 +314,13 @@ public class OtpNode extends OtpLocalNode {
      * OtpNodeStatus} handler object contains callback methods, that will be
      * called when certain events occur.
      * 
-     * @param handler
+     * @param ahandler
      *            the callback object to register. To clear the handler, specify
      *            null as the handler to use.
      * 
      */
-    public synchronized void registerStatusHandler(final OtpNodeStatus handler) {
-	this.handler = handler;
+    public synchronized void registerStatusHandler(final OtpNodeStatus ahandler) {
+	this.handler = ahandler;
     }
 
     /**
@@ -344,7 +344,7 @@ public class OtpNode extends OtpLocalNode {
      *     ;
      * </pre>
      * 
-     * @param node
+     * @param anode
      *            the name of the node to ping.
      * 
      * @param timeout
@@ -362,11 +362,11 @@ public class OtpNode extends OtpLocalNode {
      * 
      * the reply: <- SEND {2,'',#Pid<[email protected]>} {#Ref<[email protected]>,yes}
      */
-    public boolean ping(final String node, final long timeout) {
-	if (node.equals(this.node)) {
+    public boolean ping(final String anode, final long timeout) {
+	if (anode.equals(this.node)) {
 	    return true;
-	} else if (node.indexOf('@', 0) < 0
-		&& node.equals(this.node
+	} else if (anode.indexOf('@', 0) < 0
+		&& anode.equals(this.node
 			.substring(0, this.node.indexOf('@', 0)))) {
 	    return true;
 	}
@@ -375,7 +375,7 @@ public class OtpNode extends OtpLocalNode {
 	OtpMbox mbox = null;
 	try {
 	    mbox = createMbox();
-	    mbox.send("net_kernel", node, getPingTuple(mbox));
+	    mbox.send("net_kernel", anode, getPingTuple(mbox));
 	    final OtpErlangObject reply = mbox.receive(timeout);
 
 	    final OtpErlangTuple t = (OtpErlangTuple) reply;
@@ -392,17 +392,17 @@ public class OtpNode extends OtpLocalNode {
     private OtpErlangTuple getPingTuple(final OtpMbox mbox) {
 	final OtpErlangObject[] ping = new OtpErlangObject[3];
 	final OtpErlangObject[] pid = new OtpErlangObject[2];
-	final OtpErlangObject[] node = new OtpErlangObject[2];
+	final OtpErlangObject[] anode = new OtpErlangObject[2];
 
 	pid[0] = mbox.self();
 	pid[1] = createRef();
 
-	node[0] = new OtpErlangAtom("is_auth");
-	node[1] = new OtpErlangAtom(node());
+	anode[0] = new OtpErlangAtom("is_auth");
+	anode[1] = new OtpErlangAtom(node());
 
 	ping[0] = new OtpErlangAtom("$gen_call");
 	ping[1] = new OtpErlangTuple(pid);
-	ping[2] = new OtpErlangTuple(node);
+	ping[2] = new OtpErlangTuple(anode);
 
 	return new OtpErlangTuple(ping);
     }
@@ -450,9 +450,8 @@ public class OtpNode extends OtpLocalNode {
 		/* special case for netKernel requests */
 		if (name.equals("net_kernel")) {
 		    return netKernel(m);
-		} else {
-		    mbox = mboxes.get(name);
 		}
+        mbox = mboxes.get(name);
 	    } else {
 		mbox = mboxes.get(m.getRecipientPid());
 	    }
@@ -480,23 +479,23 @@ public class OtpNode extends OtpLocalNode {
     /*
      * find or create a connection to the given node
      */
-    OtpCookedConnection getConnection(final String node) {
+    OtpCookedConnection getConnection(final String anode) {
 	OtpPeer peer = null;
 	OtpCookedConnection conn = null;
 
 	synchronized (connections) {
 	    // first just try looking up the name as-is
-	    conn = connections.get(node);
+	    conn = connections.get(anode);
 
 	    if (conn == null) {
 		// in case node had no '@' add localhost info and try again
-		peer = new OtpPeer(node);
+		peer = new OtpPeer(anode);
 		conn = connections.get(peer.node());
 
 		if (conn == null) {
 		    try {
 			conn = new OtpCookedConnection(this, peer);
-			conn.setFlags(flags);
+			conn.setFlags(connFlags);
 			addConnection(conn);
 		    } catch (final Exception e) {
 			/* false = outgoing */
@@ -522,35 +521,35 @@ public class OtpNode extends OtpLocalNode {
     }
 
     /* use these wrappers to call handler functions */
-    private synchronized void remoteStatus(final String node, final boolean up,
+    private synchronized void remoteStatus(final String anode, final boolean up,
 	    final Object info) {
 	if (handler == null) {
 	    return;
 	}
 	try {
-	    handler.remoteStatus(node, up, info);
+	    handler.remoteStatus(anode, up, info);
 	} catch (final Exception e) {
 	}
     }
 
-    synchronized void localStatus(final String node, final boolean up,
+    synchronized void localStatus(final String anode, final boolean up,
 	    final Object info) {
 	if (handler == null) {
 	    return;
 	}
 	try {
-	    handler.localStatus(node, up, info);
+	    handler.localStatus(anode, up, info);
 	} catch (final Exception e) {
 	}
     }
 
-    synchronized void connAttempt(final String node, final boolean incoming,
+    synchronized void connAttempt(final String anode, final boolean incoming,
 	    final Object info) {
 	if (handler == null) {
 	    return;
 	}
 	try {
-	    handler.connAttempt(node, incoming, info);
+	    handler.connAttempt(anode, incoming, info);
 	} catch (final Exception e) {
 	}
     }
@@ -684,13 +683,13 @@ public class OtpNode extends OtpLocalNode {
      */
     public class Acceptor extends Thread {
 	private final ServerSocket sock;
-	private final int port;
+	private final int acceptorPort;
 	private volatile boolean done = false;
 
 	Acceptor(final int port) throws IOException {
 	    sock = new ServerSocket(port);
-	    this.port = sock.getLocalPort();
-	    OtpNode.this.port = this.port;
+	    this.acceptorPort = sock.getLocalPort();
+	    OtpNode.this.port = this.acceptorPort;
 
 	    setDaemon(true);
 	    setName("acceptor");
@@ -741,7 +740,7 @@ public class OtpNode extends OtpLocalNode {
 	}
 
 	public int port() {
-	    return port;
+	    return acceptorPort;
 	}
 
 	@Override
@@ -771,7 +770,7 @@ public class OtpNode extends OtpLocalNode {
 		try {
 		    synchronized (connections) {
 			conn = new OtpCookedConnection(OtpNode.this, newsock);
-			conn.setFlags(flags);
+			conn.setFlags(connFlags);
 			addConnection(conn);
 		    }
 		} catch (final OtpAuthException e) {
@@ -802,6 +801,6 @@ public class OtpNode extends OtpLocalNode {
     }
 
     public void setFlags(final int flags) {
-	this.flags = flags;
+	this.connFlags = flags;
     }
 }
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
index c98790bbd4..ef60a9f38a 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
@@ -25,7 +25,6 @@ import java.io.UnsupportedEncodingException;
 import java.math.BigDecimal;
 import java.math.BigInteger;
 import java.text.DecimalFormat;
-import java.util.Arrays;
 import java.util.zip.Deflater;
 
 /**
@@ -45,8 +44,11 @@ public class OtpOutputStream extends ByteArrayOutputStream {
     public static final int defaultIncrement = 2048;
 
     // static formats, used to encode floats and doubles
+    @SuppressWarnings("unused")
     private static final DecimalFormat eform = new DecimalFormat("e+00;e-00");
+    @SuppressWarnings("unused")
     private static final BigDecimal ten = new BigDecimal(10.0);
+    @SuppressWarnings("unused")
     private static final BigDecimal one = new BigDecimal(1.0);
 
     private int fixedSize = Integer.MAX_VALUE;
@@ -159,9 +161,9 @@ public class OtpOutputStream extends ByteArrayOutputStream {
      * @see java.io.ByteArrayOutputStream#write(byte[])
      */
     @Override
-    public void write(final byte[] buf) {
+    public void write(final byte[] abuf) {
 	// don't assume that super.write(byte[]) calls write(buf, 0, buf.length)
-	write(buf, 0, buf.length);
+	write(abuf, 0, abuf.length);
     }
 
     /* (non-Javadoc)
@@ -285,10 +287,11 @@ public class OtpOutputStream extends ByteArrayOutputStream {
      * @param b
      *            the number of bytes to write from the little end.
      */
-    public void writeLE(long n, final int b) {
+    public void writeLE(final long n, final int b) {
+    long v = n;
 	for (int i = 0; i < b; i++) {
-	    write((byte) (n & 0xff));
-	    n >>= 8;
+        write((byte) (v & 0xff));
+        v >>= 8;
 	}
     }
 
@@ -518,16 +521,17 @@ public class OtpOutputStream extends ByteArrayOutputStream {
 	write_double(f);
     }
 
-    public void write_big_integer(BigInteger v) {
+    public void write_big_integer(final BigInteger v) {
 	if (v.bitLength() < 64) {
 	    this.write_long(v.longValue(), true);
 	    return;
 	}
 	final int signum = v.signum();
+    BigInteger val = v;
 	if (signum < 0) {
-	    v = v.negate();
+        val = val.negate();
 	}
-	final byte[] magnitude = v.toByteArray();
+    final byte[] magnitude = val.toByteArray();
 	final int n = magnitude.length;
 	// Reverse the array to make it little endian.
 	for (int i = 0, j = n; i < j--; i++) {
@@ -568,7 +572,7 @@ public class OtpOutputStream extends ByteArrayOutputStream {
 		int n;
 		long mask;
 		for (mask = 0xFFFFffffL, n = 4; (abs & mask) != abs; n++, mask = mask << 8 | 0xffL) {
-		    ; // count nonzero bytes
+            // count nonzero bytes
 		}
 		write1(OtpExternal.smallBigTag);
 		write1(n); // length
@@ -827,7 +831,6 @@ public class OtpOutputStream extends ByteArrayOutputStream {
 		    write_nil(); // it should never ever get here...
 		}
 	    } else { // unicode or longer, must code as list
-		final char[] charbuf = s.toCharArray();
 		final int[] codePoints = OtpErlangString.stringToCodePoints(s);
 		write_list_head(codePoints.length);
 		for (final int codePoint : codePoints) {
@@ -867,6 +870,7 @@ public class OtpOutputStream extends ByteArrayOutputStream {
      *            the compression level (<tt>0..9</tt>)
      */
     public void write_compressed(final OtpErlangObject o, int level) {
+    @SuppressWarnings("resource")
 	final OtpOutputStream oos = new OtpOutputStream(o);
 	/*
 	 * similar to erts_term_to_binary() in external.c:
@@ -920,6 +924,11 @@ public class OtpOutputStream extends ByteArrayOutputStream {
 			"Intermediate stream failed for Erlang object " + o);
 	    } finally {
 		this.fixedSize = Integer.MAX_VALUE;
+        try {
+            dos.close();
+        } catch (IOException e) {
+            // ignore
+        }
 	    }
 	}
     }