Calling run method directly of thread (created by implementing Runnable interface) in Java

It will works as ordinary java method because the thread class run() method implementation.

void java.lang.Thread.run()

If this thread was constructed using a separate Runnable run object, then that Runnable object's run method is called; otherwise, this method does nothing and returns. Subclasses of Thread should override this method.

@Override

public void run() {

    if (target != null) {

        target.run();

    }

}

Here target is our runnable class which will set while calling Thread class constructor while creating thread.

Example:

class MyThread implements Runnable {

     @Override

     public void run() {

           System.out.println("This is my thread !!");

     }

}

public class ThreadTest {

     public static void main(String[] args) {

           MyThread  myThread = new MyThread();

          

           Thread thread = new Thread(myThread);

          

           thread.run();

     }

}