Starting Java application from other Java application..

Hi all,
I was wondering if it is possible to start a Java program from an other Java program.
In Java program 1, I have this code to execute the other application:
try {
Process p = Runtime.getRuntime().exec("cmd /c java -cp JavaApp2.jar com.test.TestFrame");
} catch (IOException e) {
}I tried this code, but unfortunately I couldn't opened the other (JavaApp2.jar) Java Application. Is there a way to open the other application anyways?
I really hope someone can help me. Help would be greatly appreciated! Thanks in advance.
Tongue78.

What if there is no JAR file?Then you can make it out of the .class files. And to anticipate your next question, if there are no .class files there is no application at all, so you can't exec() it or call the main() method directly. Your point?
And JAR isn't part of the Java language.It is a major part of the Java platform.
This means you can only get access to a JAR file via the OS. Wrong again. CLASSPATH. URLClassLoader.
In short you cannot just shout main() in a Java program and hope some other Java program will hear you and start.Absolute rubbish. If the required classes are on the CLASSPATH you just call com.company2.app2.main(args) and off you go. Or you can load the main class and invoke its main() reflectively.
No source code required, or 'source code merge' either.

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