Creating and Running Threads

In Java, threads are created and run using the Thread class. To create a new thread, you can extend the Thread class or implement the Runnable interface.

Here's an example of creating and running a thread using the Runnable interface:

1public class Main {
2  public static void main(String[] args) {
3    Thread thread = new Thread(new MyRunnable());
4    thread.start();
5    System.out.println("Main thread is running");
6  }
7}
8
9class MyRunnable implements Runnable {
10  public void run() {
11    System.out.println("New thread is running");
12  }
13}

In this example, we create a class named Main with a main method. Inside the main method, we create a new Thread object and pass an instance of the MyRunnable class to it. The MyRunnable class implements the Runnable interface, which requires the implementation of the run method. The run method contains the code that will be executed when the new thread starts. We then start the new thread using the start method.

When the program is executed, it will output:

1New thread is running
2Main thread is running

The output shows that the new thread is running concurrently with the main thread. The order of execution between the two threads is determined by the operating system scheduler.

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class Main {

  public static void main(String[] args) {

    Thread thread = new Thread(new MyRunnable());

    thread.start();

    System.out.println("Main thread is running");

  }

}

​

class MyRunnable implements Runnable {

  public void run() {

    System.out.println("New thread is running");

  }

}