$0 (Program Name) in Java? Discover main class?

Question

Is there a way to find the name of the program that is running in Java? The class of the main method would be good enough.

Answer 1

For access to the class objects when you are in a static context

public final class ClassUtils {
    public static final Class[] getClassContext() {
        return new SecurityManager() { 
            protected Class[] getClassContext(){return super.getClassContext();}
        }.getClassContext(); 
    };
    private ClassUtils() {};
    public static final Class getMyClass() { return getClassContext()[2];}
    public static final Class getCallingClass() { return getClassContext()[3];}
    public static final Class getMainClass() { 
        Class[] c = getClassContext();
        return c[c.length-1];
    }
    public static final void main(final String[] arg) {
        System.out.println(getMyClass());
        System.out.println(getCallingClass());
        System.out.println(getMainClass());
    }
}

Obviously here all 3 calls will return

class ClassUtils

but you get the picture;

classcontext[0] is the securitymanager
classcontext[1] is the anonymous securitymanager
classcontext[2] is the class with this funky getclasscontext method
classcontext[3] is the calling class
classcontext[last entry] is the root class of this thread.