anjanashankar9

public class MyInterfaceImpl implements MyInterface {
    @Override public void method1() {
        System.out.println("Implementation of method 1");
    }

    @Override public void method2() {
        System.out.println("Implementation of method 2");
    }

    public static void main(String[] args){

anjanashankar9

Implementation of method 1
Implementation of method 2

anjanashankar9

Implementation of method 1
Implementation of method 2

anjanashankar9

public interface MyInterface {
    /**
     * All the methods of an interface are public by default
     */
    void method1();
    void method2();
    default void newMethod(){
        System.out.println("This is the default implementation of the method");
    }
}

anjanashankar9

public class MyInterfaceImpl implements MyInterface {
    @Override public void method1() {
        System.out.println("Implementation of method 1");
    }

    @Override public void method2() {
        System.out.println("Implementation of method 2");
    }

    public static void main(String[] args){

anjanashankar9

Implementation of method 1
Implementation of method 2
This is the default implementation of the method

anjanashankar9

public interface InterfaceA {
    default void method(){
        System.out.println("Interface A default method");
    }
}

anjanashankar9

public interface InterfaceB {
    default void method(){
        System.out.println("Interface A default method");
    }
}

anjanashankar9

public class InterfaceImpl implements InterfaceA,InterfaceB{
}

anjanashankar9

public class InterfaceImpl implements InterfaceA,InterfaceB{
    @Override public void method() {
        System.out.println("Default method in implementation class");
    }
    public static void main(String[] args){
        InterfaceA obj = new InterfaceImpl();
        obj.method();
    }
}