Creating and Running Threads

Multithreading in Java allows concurrent execution of two or more threads. Threads are independent units of execution that share the same resources and can run in parallel.

Creating Threads by Extending Thread Class:

class MyThread extends Thread {
    public void run() {
        System.out.println("Thread running...");
    }
}

public class ThreadExample {
    public static void main(String[] args) {
        MyThread myThread = new MyThread();
        myThread.start(); // Start the thread
    }
}

Creating Threads by Implementing Runnable Interface:

class MyRunnable implements Runnable {
    public void run() {
        System.out.println("Thread running...");
    }
}

public class RunnableExample {
    public static void main(String[] args) {
        Thread thread = new Thread(new MyRunnable());
        thread.start(); // Start the thread
    }
}

Threads can be created by extending the Thread class or by implementing the Runnable interface. Both methods involve defining a run() method where the thread's logic resides.