死锁

/**
 * 死锁的原因就是同步的嵌套
 */
public class DeadLockTest {
    public static void main(String[] args) {
        Thread t1 = new Thread(new PrintRunnable(true));
        Thread t2 = new Thread(new PrintRunnable(false));
        t1.start();
        t2.start();
    }
}

class MyLock {
    static Object locka = new Object();
    static Object lockb = new Object();
}

class PrintRunnable implements Runnable {
    private boolean flag;

    PrintRunnable(boolean flag) {
        this.flag = flag;
    }

    public void run() {
        if (flag) {
            while (true) {
                synchronized (MyLock.locka) {
                    System.out.println(Thread.currentThread().getName()
                            + "...if locka ");
                    synchronized (MyLock.lockb) {
                        System.out.println(Thread.currentThread().getName()
                                + "..if lockb");
                    }
                }
            }
        } else {
            while (true) {
                synchronized (MyLock.lockb) {
                    System.out.println(Thread.currentThread().getName()
                            + "..else lockb");
                    synchronized (MyLock.locka) {
                        System.out.println(Thread.currentThread().getName()
                                + ".....else locka");
                    }
                }
            }
        }
    }
}

• 邮箱 ：[email protected]
• Good Luck!