Login

Java Threads

Threads allows a program to operate more efficiently by doing multiple things at the same time.

Threads can be used to perform complicated tasks in the background without interrupting the main program.

Creating a Thread

There are two ways to create a thread.

It can be created by extending the Thread class and overriding its run() method:

Extend Syntax

public class Main extends Thread {

  public void run() {

    System.out.println("This code is running in a thread");

  }

}

Another way to create a thread is to implement the Runnable interface:

Implement Syntax

public class Main implements Runnable {

  public void run() {

    System.out.println("This code is running in a thread");

  }

}

Running Threads

If the class extends the Thread class, the thread can be run by creating an instance of the class and call its start() method:

Extend Example

public class Main extends Thread {

  public static void main(String[] args) {

    Main thread = new Main();

    thread.start();

    System.out.println("This code is outside of the thread");

  }

  public void run() {

    System.out.println("This code is running in a thread");

  }

}

 

If the class implements the Runnable interface, the thread can be run by passing an instance of the class to a Thread object's constructor and then calling the thread's start() method:

Implement Example

public class Main implements Runnable {

  public static void main(String[] args) {

    Main obj = new Main();

    Thread thread = new Thread(obj);

    thread.start();

    System.out.println

Login
ADS CODE