Calling newly defined method from anonymous class

Question

I instantiated an object of an anonymous class to which I added a new method.

Date date = new Date() {
    public void someMethod() {}
}

I

Answer 1

Basically no.

This uglyness can do it however...

Date date = new Date() {
  public Date someMethod() { 
     //do some stuff here
     return this;
  }
}.someMethod();

But aside from this, you will only be able to call that method (which does not exist in the parent class) using reflection only, like this:

date.getClass().getMethod("someMethod").invoke(date);

(try-catch left out for sake of clarity...)

But seriously, don't do this! I'd feel being hated by the person who wrote this code, if I stumbled upon this in a codebase I have to work on.