java 多线程：开两个线程，一个线程跑同步代码块，一个线程跑同步函数

代码如下：

package com.chnsys.thread1;

public class JavaResearch01 {
    public static void main(String[] args) {
        Ticket t = new Ticket();
        Thread t1 = new Thread(t);
        Thread t2 = new Thread(t);
        /*Thread t3 = new Thread(t);
        Thread t4 = new Thread(t);*/
        t1.start();
        try {
            Thread.currentThread().sleep(10);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        t.flag = false;
        t2.start();
        /*t3.start();
        t4.start();*/
    }
}

class Ticket implements Runnable{
    private int tick = 100;
    Object obj = new Object();
    boolean flag = true;
    @Override 
    public void run() {
        // TODO Auto-generated method stub
        if(flag){
            while(true){
                //同步代码块
                synchronized (this) {
                    if(tick>0){
                        try {
                            Thread.sleep(100);
                        } catch (Exception e) {
                            // TODO: handle exception
                        }
                        System.out.println(Thread.currentThread().getName()+".....code : "+tick--);
                    }
                }
            }
        }
        //show()函数
        while(true){
            show();
        }
    }
    
    public synchronized void show(){
        if(tick>0){
            try {
                Thread.sleep(100);
            } catch (Exception e){
                //TODO: handle exception
            }
            System.out.println(Thread.currentThread().getName()+"....show : "+tick--);
        }
    }
}