一、继承Thread 　　1一直有个问题

　　当我把调用方式换成下述不是也能实现卖票吗？

package Thread;public class MyThreadTest extends Thread {     private  int ticket=20;      public void run() {       while(true) {           synchronized (this) {               try {                    Thread.sleep(100);                } catch (InterruptedException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }             if(ticket>0) {               System.out.println(Thread.currentThread().getName() + "..." + ticket--);                         }    else {               break;           }          }               }        }   public static void main(String[] args) {       MyThreadTest myThreadTest1 = new MyThreadTest();//       MyThreadTest myThreadTest2 = new MyThreadTest();//       MyThreadTest myThreadTest3 = new MyThreadTest();//       myThreadTest1.start();//       myThreadTest2.start();//       myThreadTest3.start(); //调用方式       Thread t1 = new Thread(myThreadTest1, "窗口1");       Thread t2 = new Thread(myThreadTest1, "窗口2");       t1.start();       t2.start();   }    } 二、实现runnable接口

package Thread;public class MyRunnableTest implements Runnable {    private int ticket = 20;    @Override    public void run() {        while (true) {            synchronized (this) {                try {                    Thread.sleep(100);  //更好的体现结果                } catch (InterruptedException e) {                    e.printStackTrace();                }                if (ticket > 0) {                    System.out.println(Thread.currentThread().getName() + "......" + ticket--);                }            }        }    }}class RunnableStart {    public static void main(String[] args) {        MyRunnableTest myRunnableTest = new MyRunnableTest();        Thread t1 = new Thread(myRunnableTest, "窗口1");        Thread t2 = new Thread(myRunnableTest, "窗口2");        t1.start();        t2.start();    }}