package multithreading;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

public class ThreadPools implements Runnable {

private String name;

public ThreadPools(String s) {

name = s;

}

public void run() {

try {

for(int i = 0; i < 3; i++) {

if(i == 0) {

Date d = new Date();

SimpleDateFormat ft = new SimpleDateFormat("hh:mm:ss");

System.out.println("Initialization Time for task name: " + name + " = " + ft.format(d));

} else {

Date d = new Date();

SimpleDateFormat ft = new SimpleDateFormat("hh:mm:ss");

System.out.println("Executing Time for task name: " + name + " = " + ft.format(d));

}

Thread.sleep(1000);

}

System.out.println(name + " completed");

} catch (Exception e) {

e.printStackTrace();

}

}

public static void main(String[] args) {

final int MAX_T = 3;

Runnable r1 = new ThreadPools("task 1");

Runnable r2 = new ThreadPools("task 2");

Runnable r3 = new ThreadPools("task 3");

// Create a thread pool

ExecutorService pool = Executors.newFixedThreadPool(MAX_T);

pool.execute(r1);

pool.execute(r2);

pool.execute(r3);

pool.shutdown();

}

}