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
.