Thread和Runnable理解

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class MyThread extends Thread {    private int ticket = 10;    public synchronized void run() {        for (int i = 0; i < 20; i++) {            if (this.ticket > 0) {                System.out.println("卖票：ticket" + this.ticket--);            }        }    }}class MyTask implements Runnable {    private int ticket = 10;    public synchronized void run() {        for (int i = 0; i < 20; i++) {            if (this.ticket > 0) {                System.out.println("卖票：ticket" + this.ticket--);            }        }    }}public class Main {    public static void main(String[] args) {        MyThread thread1 = new MyThread();        MyThread thread2 = new MyThread();        thread1.start();//线程执行任务        thread2.start();//线程执行任务        MyTask task=new MyTask();        new Thread(task).start();//两个线程执行一个任务        new Thread(task).start();        MyThread thread3 = new MyThread();        new Thread(thread3).start();//两个线程执行一个任务，（默认任务）        new Thread(thread3).start();    }};

结果：4个任务被执行了。

卖票：ticket10
卖票：ticket9
卖票：ticket8
卖票：ticket7
卖票：ticket6
卖票：ticket5
卖票：ticket4
卖票：ticket3
卖票：ticket2
卖票：ticket1
卖票：ticket10
卖票：ticket9
卖票：ticket8
卖票：ticket7
卖票：ticket6
卖票：ticket5
卖票：ticket4
卖票：ticket3
卖票：ticket2
卖票：ticket1
卖票：ticket10
卖票：ticket9
卖票：ticket8
卖票：ticket7
卖票：ticket6
卖票：ticket5
卖票：ticket4
卖票：ticket3
卖票：ticket2
卖票：ticket1
卖票：ticket10
卖票：ticket9
卖票：ticket8
卖票：ticket7
卖票：ticket6
卖票：ticket5
卖票：ticket4
卖票：ticket3
卖票：ticket2
卖票：ticket1

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