AdvanceJava_AnonymousClass_LambdaExpression.java

 

/*

--> Anonymous class is an inner class without a name, which means that

    we can declare and instantiate class at the same time.

--> A lambda expression is a short form for writing an anonymous class.

--> By using a lambda expression, we can declare methods without any name

 

 Write a code using two interfaces similar in working but

 --> Use anonymous class to implement first interface  &

 --> Use lambda expression to implement another interface

 */

package com.company;

interface Run{

    void speed(int a);

   

}

interface Walk{

    void walking(int b);

}

public class AdvanceJava_AnonymousClass_LambdaExpression {

    public static void main(String[] args) {

   

    //Using Anonymous Class without lambda expression

      Walk w= new Walk() {  

             public void walking(int b) {

             System.out.println("You are running at: "+b+" m/s");

              }

        };

    w.walking(2);  

         

       

    //Using Anonymous Class WITH lambda expression  

    Run r1 = (a)->{System.out.println("You are running at: "+a+" m/s");};

   

     r1.speed(13);

   

   

    }

}