class MyException extends Exception {
	public MyException() {}
  	public MyException(String msg){
  		 super(msg); 
  	}
}

public class ExceptionTest {
  
	public static void f() throws MyException {
    	System.out.println("Throwing MyException from f()");
    	throw new MyException();
  	}
  	
  	public static void g() throws MyException {
    	System.out.println("Throwing MyException from g()");
    	throw new MyException("Originated in g()");
  	}	
  	
  	public static void main(String[] args) {
    	try {
      		f();
    	} catch(MyException e) {
      		e.printStackTrace();
    	}
    	
    	try {
      		g();
    	} catch(MyException e) {
      		e.printStackTrace();
    	}
    	
	}
}