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

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--);
}
}
}