完成火车站售票程序的模拟。
要求:
(1)总票数1000张;
(2)10个窗口同时开始卖票;
(3)卖票过程延时1秒钟;
(4)不能出现一票多卖或卖出负数号票的情况。
一:实验代码
package first;
class MyThread implements Runnable{
private int ticket = 1 ;
public void run(){
for(int i=0;i<1000;i++){
synchronized(this){
if(ticket<=1000){
try{
Thread.sleep(1000) ;
}catch(InterruptedException e){
e.printStackTrace() ;
}
System.out.println(Thread.currentThread().getName()+"卖票:ticket = " + ticket++ );
}
}
}
}
}
public class Demo{
public static void main(String args[]){
MyThread my = new MyThread();
Thread d1 = new Thread(my,"窗口A");
Thread d2 = new Thread(my,"窗口B");
Thread d3 = new Thread(my,"窗口C");
Thread d4 = new Thread(my,"窗口D");
Thread d5 = new Thread(my,"窗口E");
Thread d6 = new Thread(my,"窗口F");
Thread d7 = new Thread(my,"窗口G");
Thread d8 = new Thread(my,"窗口H");
Thread d9 = new Thread(my,"窗口I");
Thread d10 = new Thread(my,"窗口J");
d4.setPriority(Thread.MIN_PRIORITY) ;
d5.setPriority(Thread.MAX_PRIORITY) ;
d6.setPriority(Thread.NORM_PRIORITY) ;
d1.start() ;
d2.start() ;
d3.start() ;
d4.start() ;
d5.start() ;
d6.start() ;
d7.start() ;
d8.start() ;
d9.start() ;
d10.start() ;
}
}
结果截图

学习总结:
1 对于java IO操作文件类——File的介绍与对File类主要方法与构造类的了解
2 Java中多线程的实现主要是通过继承Thread类或实现Runnable接口。其中Runnable接口可以资源共享。但不管使用哪种方法都要通过覆写run();在实例化的时候通过调用start()方法来启动多线程。