117.线程安全问题-同步方法_

这是一个Java实现的多线程售票系统示例，包含两个售票窗口（线程）。使用了同步方法和同步代码块来防止售票冲突。线程窗口一通过调用`synchronizedMethod`进行同步，而窗口二则使用同步代码块操作共享资源`ticketCount`。当票数为0时，两个窗口都将停止售票。

package com.itheima.threaddemo11;

public class MyRunable implements Runnable{
    private static int ticketCount=100;
    @Override
    public void run() {
        while (true){
            if ("窗口一".equals(Thread.currentThread().getName())){
                //同步方法
                boolean result = false;
                try {
                    result = synchronizedMethod();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                if (result){
                    break;
                }
            }
            if ("窗口er".equals(Thread.currentThread().getName())){
                //同步代码块
                synchronized (MyRunable.class){
                    if (ticketCount==0){
                        break;
                    }else {
                        try {
                            Thread.sleep(10);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                        ticketCount--;
                        System.out.println(Thread.currentThread().getName()+"在卖票，还剩下"+ticketCount+"张票");

                    }
                }
            }
        }
    }

    private static synchronized boolean synchronizedMethod() throws InterruptedException {
        if (ticketCount==0){
            return true;
        }else {
            Thread.sleep(10);
            ticketCount--;
            System.out.println(Thread.currentThread().getName()+"在卖票，还剩下"+ticketCount+"张票");
            return false;
        }
    }
}

package com.itheima.threaddemo11;


public class Demo {
    public static void main(String[] args) {
        MyRunable mr=new MyRunable();
        Thread t1=new Thread(mr);
        Thread t2=new Thread(mr);
        t1.setName("窗口一");
        t2.setName("窗口二");
        t1.start();
        t2.start();
    }
}