多线程售票同步代码段（二）

package testlock; //卖票程序的同步代码块实现示例  class Ticket implements Runnable { // 定义30张票 private static int tickets = 30; public void run() { while (true) { sellTicket(); } } private synchronized void sellTicket() { if (tickets > 0) { try { Thread.sleep(100); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName() + "正在出售第" + (tickets--) + "张票 "); } } } public class TicketDemo { public static void main(String[] args) throws InterruptedException { // 通过Thread类创建线程对象，并将Runnable接口的子类对象作为Thread类的构造函数的参数进行传递。 Ticket ticket = new Ticket(); Thread t1 = new Thread(ticket, "线程1"); Thread t2 = new Thread(ticket, "线程2"); Thread t3 = new Thread(ticket, "线程3"); Thread t4 = new Thread(ticket, "线程3"); // 调用线程对象的start方法开启线程。 t1.start(); t2.start(); t3.start(); t4.start(); // t1.sleep(10000);//线程霸道谁也不让，自己单独享用在时间内 // t1.setPriority(7);// 设置优先级别，默认5 } }