java之Thread线程相关 代码案例代码案例

Question

有没有yield()、sleep()、wait()、join()、run和start区别代码实例代码案例 找不到  可以运行的 不要 文档

Answer 1

这是我做练习的时候写的代码，你可以参考下，
/**
*run()，start(),join(),sleep()，yield();练习
*/
public class ThreadTest {
private int i=0;
private Object o = new Object();
static class Mythread extends Thread{
public void run() {
System.out.println("0当前线程ID:"+Thread.currentThread().getId());
}
}

static  class  Mythread1 implements Runnable{
    public void run() {
        System.out.println("1当前线程ID:"+Thread.currentThread().getId());
    }
}

public static void main(String[] args) throws InterruptedException {
    /*System.out.println("主线程："+Thread.currentThread().getId());
    Mythread mythread = new Mythread();
    mythread.run();

    mythread.start();
    System.out.println("******************************************************");

    System.out.println("主线程："+Thread.currentThread().getId());
    Mythread1 mythread1 = new Mythread1();
    mythread1.run();
    Thread thread = new Thread(mythread1);
    thread.start();*/
    //mythread1.start();
    ThreadTest test = new ThreadTest();
    /*SleepClass p =test.new SleepClass();
    SleepClass p1 = test.new SleepClass();
    p.start();
    p1.start();*/
    /*YeildClass y = test.new YeildClass();
    y.start();*/

    //启动子线程
    new JoinClass("new  Thread").start();
    for(int i=0;i<10;i++){
        if(i==5){
            Thread th = new JoinClass("thead");
            th.start();
            th.join();
        }
        System.out.println(Thread.currentThread().getName()+" "+i);
    }
}

class SleepClass extends Thread{
    @Override
    public void run() {
        synchronized (o){
            i++;
            System.out.println("i:"+i);
            try {
                System.out.println("线程："+ Thread.currentThread().getName()+"进入睡眠");
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("线程"+Thread.currentThread().getName()+"睡眠结束");
            i++;
            System.out.println("i:"+i);
        }
    }
}

class YeildClass extends Thread{
    public void run() {
        long benginTime = System.currentTimeMillis();
        int count = 0;
        for(int i=0;i<500000;i++){
            count = count +i;
            Thread.yield();
        }
        long endTime = System.currentTimeMillis();
        System.out.println("用时："+(endTime-benginTime));
    }
}

static class JoinClass extends Thread{
    public JoinClass(String name){
        super(name);
    }
    public void run() {
        for (int i =0;i<5;i++){
            System.out.println(this.getName()+" "+i);
        }
    }
}

}