urmilakadam/Multhreading

This repository showcases various concepts and examples related to multithreading in Java, demonstrating how to effectively utilize concurrent programming to enhance application performance and responsiveness.

Executor Service Java.util.concurrent.ExecutorService interface is a new way of executing tasks asynchronously in the background. An executor service is very similar to thread pool.

ExecutorService executorService = Executors.newSingleThreadExecutor();

executorService.execute(new Runnable() {
    @Override
    public void run() {
        System.out.println("executor service");
    }
});

}

Ways to create Thread:

1. ExecutorService executorService = Executors.newSingleThreadExecutor();
2. ExecutorService executorService = Executors.newFixedThreadPool(10);
3. ExecutorService executorService = Executors.newScheduledThreadPool(10);

How to check whether an ExecutorService task executed successfully? We can use a Future to check the return value.

Future future = executorService.submit(new Runnable() {
    @Override
    public void run() {
        System.out.println("executor service");
    }
});

System.out.println(future.get()); //return null if task has finished successfully.

}

Inter-thread communication methods:

1. Wait —> wait for another thread to notify
2. Notify—> notify other waiting threads.
3. notifyAll —> if more than one thread is in waiting then notify all the threads by using notifuAll method.