RunnableThreadExample.java

public class RunnableThreadExample implements Runnable {
    
    // The run method contains the code that will be executed by the thread
    @Override
    public void run() {
        try {
            for (int i = 0; i < 5; i++) {
                System.out.println("Thread: " + Thread.currentThread().getName() + " is running.");
                
                // Suspend the thread for 500 milliseconds
                Thread.sleep(500);
            }
        } catch (InterruptedException e) {
            // Handle the exception if the sleeping thread is interrupted
            System.out.println("Thread: " + Thread.currentThread().getName() + " was interrupted.");
        }
    }

    public static void main(String[] args) {
        System.out.println("--- Starting Thread Demonstration ---");
        
        // 1. Create instances of the class implementing Runnable
        RunnableThreadExample task1 = new RunnableThreadExample();
        RunnableThreadExample task2 = new RunnableThreadExample();

        // 2. Create Thread objects and pass the Runnable instances to their constructors
        // We also give them meaningful names ("Thread-1" and "Thread-2")
        Thread t1 = new Thread(task1, "Thread-1");
        Thread t2 = new Thread(task2, "Thread-2");

        // 3. Start the threads (This triggers the run() method in separate call stacks)
        t1.start();
        t2.start();
    }
}