package com.test.thread;public class TestThread {    public static void main(String[] args) {        TestThread testThread = new TestThread();        Thread thread1 = new Thread(new Thread1(testThread));        Thread thread2 = new Thread(new Thread2(testThread));        thread1.start();        thread2.start();    }    public synchronized void show(String threadName,boolean flag,boolean isEnd){        for(int i=0;i

线程1和线程2，线程2执行一次，线程1执行一次。