Week 08 : Programming Assignments - NPTEL >> Programming In Java - 2025

Week 08 : Programming Assignment 1

Solution :

public class W08_P1 {

    // Create a class that extends Thread
    static class MyThread extends Thread {

        @Override
        public void run() {
		

		// Answer
		System.out.print("Thread is running");
		//End
		

	}
    }

    public static void main(String[] args) {

        // Create object of MyThread
        MyThread t = new MyThread();

        // Start the thread
        t.start();
    }
}

Week 08 : Programming Assignment 2

Solution :

public class W08_P2 {

    // Create a class that implements Runnable interface
    static class MyRunnable implements Runnable {

        @Override
        public void run() {

		// Answer
		System.out.print("Runnable thread is running");
		//End
		

		}
    }

    public static void main(String[] args) {

        // Create object of MyRunnable
        MyRunnable r = new MyRunnable();

        // Create Thread using Runnable object
        Thread t = new Thread(r);

        // Start the thread
        t.start();
    }
}

Week 08 : Programming Assignment 3

Solution :

public class W08_P3 {

    // Create a class that extends Thread
    static class MyThread extends Thread {

        @Override
        public void run() {

		// Answer
		System.out.println("Thread is running");
			// End
		

	   }
    }

    public static void main(String[] args) {

        // Create thread object
        MyThread t = new MyThread();

        // Thread is created but not started yet
        System.out.println("Thread state before start");

        // Start thread
        t.start();

        // Thread has started running
        System.out.println("Thread state after start");

        try {
            // Wait for thread to finish
            t.join();
        } catch (InterruptedException e) {
            // Not needed for beginners, but required to handle possible interruptions
        }

        // Thread has finished
        System.out.println("Thread state after completion");
    }
}

Week 08 : Programming Assignment 4

Solution :

public class W08_P4 {

    // Thread class
    static class MyThread extends Thread {

        @Override
        public void run() {
            // No output here to keep portal testing consistent
        }
    }

    public static void main(String[] args) {

        MyThread t = new MyThread();

        // Set thread priority
        t.setPriority(8);

        // Start thread
        t.start();

		// ANSWER
		 System.out.print("Thread priority is: " + t.getPriority());
		// END

	}
}

Week 08 : Programming Assignment 5

Solution :

public class W08_P5 {

    // Shared class with a number
    static class Counter {
        int count = 0;

        // Synchronized method to safely increase number
        public synchronized void increment() {
            count++;
        }
    }

    // Thread class to run increment
    static class MyThread extends Thread {
        Counter c;

        MyThread(Counter c) {
            this.c = c;
        }

        @Override
        public void run() {
		

	//ANSWER
	for(int i =1 ; i<=1000 ; i++)
    {
      c.increment();
    }
		//END
		

	}
    }

    public static void main(String[] args) {

        Counter c = new Counter();

        // Create two threads
        MyThread t1 = new MyThread(c);
        MyThread t2 = new MyThread(c);

        // Start both threads
        t1.start();
        t2.start();

        try {
            // Wait for both threads to finish
            t1.join();
            t2.join();
        } catch (InterruptedException e) {
        }

        // Print final count
        System.out.println("Final count is: " + c.count);
    }
}