$show=/label

How To Create A Thread Using Lambda Expressions In Java 8 and Using Runnable With Lambda?

SHARE:

A quick guide to create a thread using java 8 lambda expression instead of overriding the Runnable interface run() method.

 1. Overview

In this tutorial, we'll learn how to create a thread using lambda expression in java 8 and beyond versions.

Lambda expressions are newly added concept in the JDK 1.8 version and that introduced the functional programming concepts such as assigning the method to the variable.

Important point is that we can directly implementation for the abstract method of interface with java 8 lambda instead of overriding the method by implementing the interface.

How To Create A Thread Using Lambda Expressions In Java 8?


2. Example To Create New Thread Via Runnable Using Lambda in Java 8

In the below program, we are going to create the Thread and implementing the Runnable interface run() method using Lambda Expression.

By using Lambda, we can skip the implements Runnable interface and overriding the run() method which holds the core thread logic.

If you are new to java 8 lambda, you can read the complete set of rules to Lambda Expressions.

And also we can avoid new Runnable() and implementing the run() method using lamdba. Because, once you start writing the code using java 8 then compiler knows that you are using Function Interface Runnable which has only run() method.

So when you pass Runnable lambda to Thread constructor, it treats as passing implementation of Runnable interface with run() method.

Next, Look at the below example program to create a java thread via runnable using lambda expression


package com.javaprogramto.threads.java8;

public class CreateThreadLambda {

	public static void main(String[] args) {

		// Thread creation using java 8 lambda using runnable
		Thread evenNumberThread = new Thread(() -> {
			
			// this logic is implementation of run() method to print only even numbers
			for (int i = 0; i < 20; i++) {
				if (i % 2 == 0) {
					System.out.println("Even Number Thread : "+i);
					try {
						Thread.sleep(1000);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}
			}
		});

		// starting the thread
		evenNumberThread.start();
		
		// Printing the odd numbers from main thread.
		for (int i = 0; i < 20; i++) {
			if (i % 2 == 1) {
				System.out.println("Odd Number Thread : "+i);
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		}

	}
}
 

Output:

Even Number Thread : 0
Odd Number Thread : 1
Odd Number Thread : 3
Even Number Thread : 2
Odd Number Thread : 5
Even Number Thread : 4
Even Number Thread : 6
Odd Number Thread : 7
Odd Number Thread : 9
Even Number Thread : 8
Odd Number Thread : 11
Even Number Thread : 10
Odd Number Thread : 13
Even Number Thread : 12
Even Number Thread : 14
Odd Number Thread : 15
Even Number Thread : 16
Odd Number Thread : 17
Even Number Thread : 18
Odd Number Thread : 19
 

3. Conclusion

In this article, we've seen how to create a new thread using lambda java 8 with example program to print even and odd number in unordered.

GitHub

Runnable API

Creating a thread using Thread class and Runnable Interface

COMMENTS

BLOGGER

About Us

Author: Venkatesh - I love to learn and share the technical stuff.
Name

accumulo,1,ActiveMQ,2,Adsense,1,API,37,ArrayList,16,Arrays,16,Bean Creation,3,Bean Scopes,1,BiConsumer,1,Blogger Tips,1,Books,1,C Programming,1,Collection,5,Collections,28,Collector,1,Command Line,1,Compile Errors,1,Configurations,7,Constants,1,Control Statements,8,Conversions,6,Core Java,93,Corona India,1,Create,2,CSS,1,Date,3,Date Time API,35,Dictionary,1,Difference,1,Download,1,Eclipse,2,Efficiently,1,Error,1,Errors,1,Exception,1,Exceptions,3,Fast,1,Files,13,Float,1,Font,1,Form,1,Freshers,1,Function,3,Functional Interface,2,Garbage Collector,1,Generics,4,Git,4,Grant,1,Grep,1,HashMap,1,HomeBrew,2,HTML,2,HttpClient,2,Immutable,1,Installation,1,Interview Questions,5,Iterate,2,Jackson API,3,Java,30,Java 10,1,Java 11,5,Java 12,5,Java 13,2,Java 14,2,Java 8,105,Java 8 Difference,2,Java 8 Stream Conversions,2,java 8 Stream Examples,3,Java 9,1,Java Conversions,11,Java Design Patterns,1,Java Files,1,Java Program,3,Java Programs,104,java.lang,5,java.util. function,1,jQuery,1,Kotlin,11,Kotlin Conversions,6,Kotlin Programs,10,Lambda,1,lang,29,Leap Year,1,live updates,1,LocalDate,1,Logging,1,Mac OS,2,Math,1,Matrix,5,Maven,1,Method References,1,Mockito,1,MongoDB,3,New Features,1,Operations,1,Optional,6,Oracle,5,Oracle 18C,1,Partition,1,Patterns,1,Programs,1,Property,1,Python,2,Quarkus,1,Read,1,Real Time,1,Recursion,2,Remove,2,Rest API,1,Schedules,1,Serialization,1,Servlet,2,Sort,1,Sorting Techniques,8,Spring,2,Spring Boot,23,Spring Email,1,Spring MVC,1,Streams,27,String,58,String Programs,12,String Revese,1,Swing,1,System,1,Tags,1,Threads,11,Tomcat,1,Tomcat 8,1,Troubleshoot,16,Unix,3,Updates,3,util,5,While Loop,1,
ltr
item
JavaProgramTo.com: How To Create A Thread Using Lambda Expressions In Java 8 and Using Runnable With Lambda?
How To Create A Thread Using Lambda Expressions In Java 8 and Using Runnable With Lambda?
A quick guide to create a thread using java 8 lambda expression instead of overriding the Runnable interface run() method.
https://1.bp.blogspot.com/-qM8BjdIFlNY/X8ZhKqwSn4I/AAAAAAAADGg/r0VZDHTTfgongk63MovlPdbstOjoCskaQCLcBGAsYHQ/w640-h468/How%2BTo%2BCreate%2BA%2BThread%2BUsing%2BLambda%2BExpressions%2BIn%2BJava%2B8%253F.png
https://1.bp.blogspot.com/-qM8BjdIFlNY/X8ZhKqwSn4I/AAAAAAAADGg/r0VZDHTTfgongk63MovlPdbstOjoCskaQCLcBGAsYHQ/s72-w640-c-h468/How%2BTo%2BCreate%2BA%2BThread%2BUsing%2BLambda%2BExpressions%2BIn%2BJava%2B8%253F.png
JavaProgramTo.com
https://www.javaprogramto.com/2020/12/java8-create-thread-using-lambda.html
https://www.javaprogramto.com/
https://www.javaprogramto.com/
https://www.javaprogramto.com/2020/12/java8-create-thread-using-lambda.html
true
3124782013468838591
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share to a social network STEP 2: Click the link on your social network Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy Table of Content