Implement two interfaces in an anonymous class

Question

I have two interfaces:

interface A {
    void foo();
}

interface B {
    void bar();
}

I am able to create anonymous instances of classes impl

Answer 1

For save some keystrokes (for example if the interfaces have a lot of methods) you can use

abstract class Aggregate implements A,B{
}

new MyObject extends Aggregate{
   void foo(){}
   void bar(){}
}

Notice the key is to declare the Aggregate as abstract