Bikash Mainali

Types of thread pool

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Bikash Mainali
·

1 min read

  1. FixedThreadPool: uses a blocking queue to store tasks

  1. CachedThreadPool: uses a synchronous queue of size 1

  1. ScheduledThreadPool: uses a delay queue

  1. SingleThreadedExecuter (sequential execution of tasks): uses a blocking queue. The size of the thread pool is 1.

     public class ThreadTypesExample {
     public static void main(String[] args) throws InterruptedException {
         ExecutorService service = Executors.newSingleThreadExecutor();
         for (int i = 0; i < 3; i++) {
             service.execute(new Task());
         }
         System.out.println("Thread name : " +    Thread.currentThread().getName());
     }
     static class Task implements Runnable {
         @Override
         public void run() {
             System.out.println("Thread name : " + Thread.currentThread().getName());
         }
     }
 }

 //output
 Thread name : main
 Thread name : pool-1-thread-1
 Thread name : pool-1-thread-1
 Thread name : pool-1-thread-1
multithreadingJava