Process, please help me, real java man

Question

i use following code to execute a command (exceptions are deleted):
String s="java.exe MyClass";
Runtime run=Runtime.getRuntime();
Process pro=run.exec(s);
simple enough, after the code has been executed, we see an interface (i.e. JFrame,if MyClass extends JFrame).
my question is: if user closes MyClass by click close button, in my app, how to know MyClass is destroyed?
very trick, any methods such as Process.waitFor() don't work in the case, because:
1. object Process pro represnts java.exe (not MyClass)
2. MyClass is a process created by java.exe
thx

Answer 1

my question is: if user closes MyClass by click close
button, in my app, how to know MyClass is destroyed?
very trick, any methods such as Process.waitFor()
don't work in the case, because:
1. object Process pro represnts java.exe (not MyClass)
2. MyClass is a process created by java.exe
Obviously you are calling this from a Java program, so you don't need java.exe at all to execute MyClass. Why don't you use:
String args[] = new String[0];
MyClass.main(args);If you add some kind of getExitStatus() to MyClass your problems should be solved...
Thomas