sth about "this"

public  class Test extends Test2
{
 Test() { }

public void testMethod(){
 System.out.println("method in Test----son");
 }

public static void main(String[] args)
  {
   Test t=new Test();
   t.f();
  }
}

 class Test2
{
 Test2() { }

public void testMethod(){
 System.out.println("method in Test2----dad");
 }

public void f(){
 testMethod();
 this.testMethod();
 }
 }

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What is the output?   This is tricky if you do not know the exact meaning of "this".

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OUTPUT:

E:/MyDoc/Exercises>java Test
method in Test----son
method in Test----son
.