ThreadTest

ThreadTest.java

package com.icyrhyme.concurrent;

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

import static java.lang.Thread.sleep;

public class ThreadTest {
    public static class MyThread extends Thread {
        @Override
        public void run() {
            try {
                sleep(3000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("Hello, Thread!");
        }
    }
    public static void main(String[] args) {
        Thread t1 = new MyThread();

        Runnable r = new Runnable() {
            @Override
            public void run() {
                try {
                    sleep(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                System.out.println("Hello, Runnable");
            }
        };
        Thread t2 = new Thread(r);

        Thread t3 = new Thread(() -> System.out.println("Hello, lambda"));
        t1.start();
        t2.start();
        t3.start();

        ExecutorService executorService = Executors.newSingleThreadExecutor();
        try {
            executorService.submit(() -> System.out.println("Hello, executor"));
        } finally {
            executorService.shutdown();
        }
    }
}