Invoker class

For a long time I've been thinking how to write code to get the name of the calling class, some days back I was reading an article which arose my curiosity again. I was successful doing it in two ways.

1. Stacktrace method

One of the hints which I got was our exception class, whenever an exception is thrown we get the whole stack strace, which includes the invoking classes.

Throwable t = new Throwable(); 
StackTraceElement callerClass = t.getStackTrace()[1]; 
System.out.println(callerClass.getClassName());

Gets the class name :)

2. Security Manager method

class SM extends SecurityManager {     
    @Override  
    public Class[] getClassContext() {   
        return super.getClassContext();  
    } 
}

SM sm = new SM(); 
Class[] classContext = sm.getClassContext(); 
System.out.println(classContext[2].getName());

Bingo, got the class name. getClassContext() is a protected method, to use it we need to extend security manager or use it as I've done above.