java多线程（1）

一、如何调试和查看多线程程序？

命令行下输入：

$ jconsole

二、线程的生命周期?

NEW

RUNNABLE

RUNNING

BLOCKKED

TERMINATED

 

三、例子：

package com.javaconcurrencyprogramming.chapter1;

import java.util.concurrent.TimeUnit;

import static java.lang.Thread.sleep;

/**
 * @description: java多线程的一个例子
 * @author: 
 * @create: 
 **/

public class TryConcurrency {

    public static void main(String[] args) {

    /*
    线程启动必须在前
     */
        /*new Thread(){
            public void run(){
                enjoyMusic();
            }
        }.start();

        browseNews();
*/
        //jdk8中的写法
        new Thread(TryConcurrency::enjoyMusic).start();
        browseNews();
    }



    private static void browseNews() {

        for (;;){
            System.out.println("Uh-huh, the good news.");
            sleep(1);
        }
    }

    private static void enjoyMusic(){

        for (;;){
            System.out.println("Uh-huh, the nice music.");
            sleep(1);
        }
    }

    private static void sleep(int seconds){

        try {
            TimeUnit.SECONDS.sleep(seconds);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}