Provide more helpful information to user if exception occurs due to running twice at one time

examples/src/TcpExamples/TcpExample4Client.java

@@ -56,6 +56,9 @@ public class TcpExample4Client
         {
             System.out.println("Problem with TcpExample4Client, see exception trace:");
             System.out.println(e);
+            // Provide more helpful information to user if exception occurs due to running twice at one time
+            if (e instanceof java.net.BindException)
+                System.out.println("*** Be sure to stop any other running instances of programs using this port!");
         }
     }
 }
\ No newline at end of file

examples/src/TcpExamples/TcpExample4HandlerThread.java

@@ -58,6 +58,9 @@ public class TcpExample4HandlerThread extends Thread
         {
             System.out.println("Problem with TcpExample4HandlerThread, see exception trace:");
             System.out.println(e);
+            // Provide more helpful information to user if exception occurs due to running twice at one time
+            if (e instanceof java.net.BindException)
+                System.out.println("*** Be sure to stop any other running instances of programs using this port!");
         }
     }
 }

examples/src/TcpExamples/TcpExample4ThreadServer.java

@@ -36,6 +36,9 @@ public class TcpExample4ThreadServer {
         {
             System.out.println("Problem with TcpExample4ThreadServer, see exception trace:");
             System.out.println("Error: " + e);
+            // Provide more helpful information to user if exception occurs due to running twice at one time
+            if (e instanceof java.net.BindException)
+                System.out.println("*** Be sure to stop any other running instances of programs using this port!");
         }
 		System.out.println("=============================================================");
     }