handle warnings about potential null pointers

3 files changed, 16 insertions, 3 deletions

diff --git a/lib/jinterface/test/jinterface_SUITE_data/MboxLinkUnlink.java b/lib/jinterface/test/jinterface_SUITE_data/MboxLinkUnlink.java
index 79be4aa933..470fdb4a14 100644
--- a/lib/jinterface/test/jinterface_SUITE_data/MboxLinkUnlink.java
+++ b/lib/jinterface/test/jinterface_SUITE_data/MboxLinkUnlink.java
@@ -73,7 +73,10 @@ class MboxLinkUnlink {
 		OtpErlangObject[] msg = {mainMbox.self(),mbox.self()};
 		mbox.send("erl_link_server", erlNode, new OtpErlangTuple(msg));
 		OtpErlangObject o = mbox.receive(1000);
-		if (o == null) System.exit(1);
+        if (o == null) {
+            System.exit(1);
+            return;
+        }
 		OtpErlangTuple tuple = (OtpErlangTuple)o;
 		int tag = (int)((OtpErlangLong)tuple.elementAt(0)).longValue();
 
diff --git a/lib/jinterface/test/jinterface_SUITE_data/MboxSendReceive.java b/lib/jinterface/test/jinterface_SUITE_data/MboxSendReceive.java
index 2db71bb5cd..44433aa619 100644
--- a/lib/jinterface/test/jinterface_SUITE_data/MboxSendReceive.java
+++ b/lib/jinterface/test/jinterface_SUITE_data/MboxSendReceive.java
@@ -17,7 +17,13 @@
  * %CopyrightEnd%
  */
 
-import com.ericsson.otp.erlang.*;
+import com.ericsson.otp.erlang.OtpErlangAtom;
+import com.ericsson.otp.erlang.OtpErlangLong;
+import com.ericsson.otp.erlang.OtpErlangObject;
+import com.ericsson.otp.erlang.OtpErlangPid;
+import com.ericsson.otp.erlang.OtpErlangTuple;
+import com.ericsson.otp.erlang.OtpMbox;
+import com.ericsson.otp.erlang.OtpNode;
 
 class MboxSendReceive {
 
@@ -35,6 +41,7 @@ class MboxSendReceive {
     private static final int java_internal_send_receive_different_nodes = 3;
     private static final int java_internal_send_receive_self = 4;
 
+    @SuppressWarnings("null")
     public static void main(String argv[]) {
 
 	String cookie = argv[0];
diff --git a/lib/jinterface/test/jinterface_SUITE_data/NodeStatusHandler.java b/lib/jinterface/test/jinterface_SUITE_data/NodeStatusHandler.java
index 13c6203b15..06ddfa2d61 100644
--- a/lib/jinterface/test/jinterface_SUITE_data/NodeStatusHandler.java
+++ b/lib/jinterface/test/jinterface_SUITE_data/NodeStatusHandler.java
@@ -93,7 +93,10 @@ public class NodeStatusHandler extends OtpNodeStatus {
 	    }
 
 	    OtpErlangObject o = mbox.receive(recTime);
-	    if (o == null) System.exit(2);
+        if (o == null) {
+            System.exit(2);
+            return;
+        }
 	    if (! ((OtpErlangAtom)o).atomValue().equals("done"))
 		System.exit(3);