ExecutorService: submit(Runnable task) : ExecutorService « java.util.concurrent « Java by API

1. Java by API
2. java.util.concurrent
3. ExecutorService

ExecutorService: submit(Runnable task)

 
import java.io.IOException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

public class MainClass {
  ExecutorService executor = Executors.newFixedThreadPool(3);

  public void start() throws IOException {
    int i=0;
    while (!executor.isShutdown())
      executor.submit(new MyThread(i++));
  }

  public void shutdown() throws InterruptedException {
    executor.shutdown();
    executor.awaitTermination(30, TimeUnit.SECONDS);
    executor.shutdownNow();
  }

  public static void main(String argv[]) throws Exception {
    new MainClass().start();
  }
}

class MyThread implements Runnable {
private int i;
  MyThread(int i) {
  this.i = i;
  }

  public void run() {
    System.out.println("I am in thread:"+i);
    
  }
}

           
         
  

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