Lambda expression is used to provide the implementation of functional interface.
Java Lambda Expression Syntax
(argument-list) -> {function-body}
Where:
Argument-list: It can be empty or non-empty as well.
Arrow notation/lambda notation: It is used to link arguments-list and body of expression.
Function-body: It contains expressions and statements for lambda expression.
Example
package com.w3spoint; public class LambdaExpressionExample { public static void main(String args[]){ //Thread Example without lambda Runnable r1=new Runnable(){ public void run(){ System.out.println("Thread1 is running..."); } }; Thread t1=new Thread(r1); t1.start(); //Thread Example with lambda Runnable r2=()->{ System.out.println("Thread2 is running..."); }; Thread t2=new Thread(r2); t2.start(); } } |
Output
Thread1 is running...
Thread2 is running... |