extra-assignment/src/MultipleInheritance.java

// A simple Java program to demonstrate multiple 
// inheritance through default methods. 
interface PI1 {
    // default method
    default void show() {
        System.out.println("Default PI1");
    }
}

interface PI2 {
    // Default method
    default void show() {
        System.out.println("Default PI2");
    }
}

// Implementation class code
class MultipleInheritance implements PI1, PI2 {
    // Overriding default show method
    public void show() {
        // use super keyword to call the show
        // method of PI1 interface
        PI1.super.show();

        // use super keyword to call the show
        // method of PI2 interface
        PI2.super.show();
    }

    public static void main(String args[]) {
        MultipleInheritance d = new MultipleInheritance();
        d.show();
    }
}