interface A{
    default public void method1(){
        System.out.println("method1 printing from interface A");
    }
    default public void method2(){
         method1(); // note that method1() is overriden in class C.
                    // which one should be called? from A or C?
    }
}

interface B extends A{
    void methodWhichCallsMethodOnInterface();
}

class C implements B{
    @Override
    public void method1(){
        System.out.println("method1 printing from class C");
    }

    @Override
    public void methodWhichCallsMethodOnInterface(){
        method2();
    }
}

B b;
b.methodWhichCallsMethodOnInterface();