Executors sample

gistfile1.java

package com.komamitsu;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class App {
  private static class MyRunnable implements Runnable {
    private int num = 0;

    @Override
    public void run() {
      for (int i = 0; i < 5; i++) {
        num++;
        System.out.println(String.valueOf(num));
        try {
          Thread.sleep(1000);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }
  }

  public static void main(String[] args) {
    MyRunnable myRunnable1 = new MyRunnable();
    MyRunnable myRunnable2 = new MyRunnable();
    ExecutorService executor = Executors.newSingleThreadExecutor();
    System.out.println("========== 1 ===========");
    executor.execute(myRunnable1);
    System.out.println("========== 2 ===========");
    executor.execute(myRunnable2);
    System.out.println("========== 3 ===========");
    executor.shutdown();
  }
}

========== 1 ===========
========== 2 ===========
1
========== 3 ===========
2
3
4
5
1
2
3
4
5


package com.komamitsu;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class App {
  private static class MyRunnable implements Runnable {
    private int num = 0;

    @Override
    public void run() {
      for (int i = 0; i < 5; i++) {
        num++;
        System.out.println(String.valueOf(num));
        try {
          Thread.sleep(1000);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }
  }

  public static void main(String[] args) {
    MyRunnable myRunnable1 = new MyRunnable();
    MyRunnable myRunnable2 = new MyRunnable();
    ExecutorService executor = Executors.newFixedThreadPool(2);
    System.out.println("========== 1 ===========");
    executor.execute(myRunnable1);
    System.out.println("========== 2 ===========");
    executor.execute(myRunnable2);
    System.out.println("========== 3 ===========");
    executor.shutdown();
  }
}

========== 1 ===========
========== 2 ===========
========== 3 ===========
1
1
2
2
3
3
4
4
5
5