Java多线程集锦

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原创最新推荐文章于 2026-03-08 00:12:13 发布 433 阅读 AI 写同款· GEO 优化 ›

管闲事的小明 http://acm.nyist.net/JudgeOnline/problem.php?pid=51 管闲事的小明时间限制：4000 ms | 内存限制：65535 KB 难度：2 描述某校大门外长度为L的马路上有一排树，每两棵相邻的树之间的间隔都是1米。我们可以把马路看成一个数轴，马路的一端在数轴0的位置，另一端在L的位置；数轴上的每个整数点，即0，1，2，…… 阅读详情

//多线程之同步（方法）重点：synchronized关键字
class Ticket1 implements Runnable {

    private int tickets = 10;

    @Override
    public void run() {
        while (true) {
            saleTicket();
            if (tickets <= 0) {
                break;
            }
        }
    }

    private synchronized void saleTicket() {
        if (tickets > 0) {
            try {
                Thread.sleep(10);
            } catch (InterruptedException ex) {
                Logger.getLogger(Ticket1.class.getName()).log(Level.SEVERE, null, ex);
            }
            System.out.println(Thread.currentThread().getName() + "---卖出的票" + tickets--);
        }
    }
}

public class Test3 {

    public static void main(String[] args) {
        Ticket1 ticket = new Ticket1();
        new Thread(ticket, "线程一").start();
        new Thread(ticket, "线程二").start();
        new Thread(ticket, "线程三").start();
        new Thread(ticket, "线程四").start();

    }
}
//多线程之同步（代码块）
class Ticket implements Runnable {

    private int tickets = 1000;
    Object lock = new Object();

    public void run() {
        while (true) {
            synchronized (lock) {
                try {
                    Thread.sleep(10);//经过的线程休眠10毫秒
                } catch (InterruptedException ex) {
                    Logger.getLogger(Ticket.class.getName()).log(Level.SEVERE, null, ex);
                }
                if (tickets > 0) {
                    System.out.println(Thread.currentThread().getName() + "--卖出的票" + tickets--);
                } else {
                    break;
                }
            }
        }
    }
}

public class Test2 {
    public static void main(String[] args) {
        Ticket ticket=new Ticket();
        new Thread(ticket,"线程一").start();
        new Thread(ticket,"线程二").start();
        new Thread(ticket,"线程三").start();
        new Thread(ticket,"线程四").start();
    }
}
//多线程之插队  重点：.join()方法
class Thread1 implements Runnable {

    @Override
    public void run() {
        for (int i = 1; i < 6; i++) {
            System.out.println(Thread.currentThread().getName() + "输入：" + i);
            try {
                Thread.sleep(500);//线程休眠500毫秒
            } catch (InterruptedException ex) {
                Logger.getLogger(Thread1.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }

}

public class Test4 {

    public static void main(String[] args) throws Exception {
        Thread t = new Thread(new Thread1(), "线程一");
        t.start();
        for (int i = 1; i < 6; i++) {
            System.out.println(Thread.currentThread().getName() + "输入：" + i);
            if (i == 2) {
                t.join();
            }
            Thread.sleep(500);
        }
    }
}