Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to implement the Runnable interface using lambda expression in Java?
The Runnable interface is a functional interface defined in java.lang package. This interface contains a single abstract method, run() with no arguments. When an object of a class implementing this interface used to create a thread, then run() method has invoked in a thread that executes separately.
Syntax
@FunctionalInterface
public interface Runnable {
void run();
}In the below example, we can implement a Runnable interface by using an anonymous class and lambda expression.
Example
public class RunnableLambdaTest {
public static void main(String[] args) {
Runnable r1 = new Runnable() {
@Override
public void run() { // anonymous class
System.out.println("Runnable with Anonymous Class");
}
};
Runnable r2 = () -> { // lambda expression
System.out.println("Runnable with Lambda Expression");
};
new Thread(r1).start();
new Thread(r2).start();
}
}Output
Runnable with Anonymous Class Runnable with Lambda Expression
Updated on: 13-Jul-2020
12K+ Views
Advertisements