Why can't I create a new method in an anonymous inner class?

Question

If I have the following class:

public class TestObject {
  public String Hooray() {
    return \"Hooray!\";
  }
}

I can obviously instantiate t

Answer 1

Because the class has no name, you cannot refer to its type definition at compile time. The compiler can only know it as a TestObject, which has no boo() method