打印Thread六种状态的例子

个人备忘录，不是分享文章。。

public class 线程状态演示 {

    public static void main(String[] args)throws Exception{
        showNew();
        showRunning();
        showBloking();
        showWait();
        showTimedWait();
        showTerminated();
    }

    public static void showTerminated(){
        Thread t = new Thread(()->{});
        t.start();
        try {
            Thread.sleep(500);
        } catch (InterruptedException e) {
        }
        System.out.println(t.getState());
    }

    public static void showNew(){
        System.out.println((new Thread()).getState());
    }

    public static void showRunning(){
        (new Thread(()->{
            System.out.println(Thread.currentThread().getState());
        })).start();
    }

    public static void showTimedWait() throws InterruptedException {
        Object obj = new Object();
        Thread t1 = new Thread(()->{
            synchronized (obj){
                try {
                    obj.wait(2000);
                } catch (InterruptedException e) {
                }
            }
        });
        t1.start();

        Thread t2 = new Thread(()->{
            synchronized (obj){
                try {
                    Thread.sleep(5000L);
                    obj.notify();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
        t2.start();
        try {
            Thread.sleep(500);
        } catch (InterruptedException e) {
        }
        System.out.println(t1.getState());
    }

    public static void showWait() throws InterruptedException {
        Object obj = new Object();
        Thread t1 = new Thread(()->{
            synchronized (obj){
                try {
                    obj.wait();
                } catch (InterruptedException e) {
                }
            }
        });
        t1.start();

        Thread t2 = new Thread(()->{
            synchronized (obj){
                try {
                    Thread.sleep(5000L);
                    obj.notify();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
        t2.start();
        try {
            Thread.sleep(500);
        } catch (InterruptedException e) {
        }
        System.out.println(t1.getState());
    }

    public static void showBloking(){
        Object obj = new Object();

        Thread t1 = new Thread(()->{
            synchronized (obj){
                try {
                    Thread.sleep(5000L);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
        t1.start();

        Thread t2 = new Thread(()->{
            try {
                Thread.sleep(500L);
            } catch (InterruptedException e) {
            }
            synchronized (obj){
                try {
                    Thread.sleep(5000L);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
        t2.start();

        try {
            Thread.sleep(1000L);
        } catch (InterruptedException e) {
        }
        System.out.println(t2.getState());
    }

}