Antlr opened remote debugger instead of local debugger

Problem:

When running the Debug for Antlr, you see this following output message in Debugger Tab/Output Message

I looked around and found this:

java.lang.UnsupportedClassVersionError: __Test__ : Unsupported major.minor version 51.0

               at java.lang.ClassLoader.defineClass1(Native Method)

               at java.lang.ClassLoader.defineClassCond(Unknown Source)

               at java.lang.ClassLoader.defineClass(Unknown Source)

               at java.security.SecureClassLoader.defineClass(Unknown Source)

               at java.net.URLClassLoader.defineClass(Unknown Source)

               at java.net.URLClassLoader.access$000(Unknown Source)

               at java.net.URLClassLoader$1.run(Unknown Source)

               at java.security.AccessController.doPrivileged(Native Method)

               at java.net.URLClassLoader.findClass(Unknown Source)

               at java.lang.ClassLoader.loadClass(Unknown Source)

               at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

               at java.lang.ClassLoader.loadClass(Unknown Source)

Could not find the main class: __Test__.  Program will exit.

Exception in thread "main" 

And it opened Remote Debugger instead of using local Debugger

Solution:

The problem that this occurred for me is due to several version of Java is installed in my machine.

e.g. java 1.6(x86) and java1.7(x64) i am using 64 bits machine.

I delete all the java version I have, and installed again java1.7, i works.

Originally in Help>About>Information tab, it shows java 1.6.

After unstalling and reinstall, it shows the correct version java 1.7.