锁的对象测试

TheThread.java

package twelve;

public class TheThread {
    public static void main(String[] args) {
        ThreadLock_Util util = new ThreadLock_Util();
        long start = System.currentTimeMillis();
        testTmp1Tmp1(util);
        Runtime.getRuntime().addShutdownHook(new Thread(() -> System.out.println(System.currentTimeMillis() - start)));
    }

    /**
     * 4s
     * @param util
     */
    public static final void testObject(ThreadLock_Util util) {
        new Thread(() -> util.printObject1(Thread.currentThread().getId())).start();
        new Thread(() -> util.printObject2(Thread.currentThread().getId())).start();
        new Thread(() -> util.printThisObj1(Thread.currentThread().getId())).start();
        new Thread(() -> util.printThisObj2(Thread.currentThread().getId())).start();
    }

    /**
     * 2s
     * @param util
     */
    public static final void testStaticAndClass(ThreadLock_Util util) {
        new Thread(() -> util.printStatic2(Thread.currentThread().getId())).start();
        new Thread(() -> util.printStaticWithClass(Thread.currentThread().getId())).start();
    }

    /**
     * 1s
     * @param util
     */
    public static final void testStaticAndTmp(ThreadLock_Util util) {
        new Thread(() -> util.printTmpObj1(Thread.currentThread().getId())).start();
        new Thread(() -> util.printStatic2(Thread.currentThread().getId())).start();
    }

    /**
     * 1s
     * @param util
     */
    public static final void testStaticAndObject(ThreadLock_Util util) {
        new Thread(() -> util.printThisObj1(Thread.currentThread().getId())).start();
        new Thread(() -> util.printStatic2(Thread.currentThread().getId())).start();
    }

    /**
     * 1s
     * @param util
     */
    public static final void testTmpAndObject(ThreadLock_Util util) {
        new Thread(() -> util.printThisObj1(Thread.currentThread().getId())).start();
        new Thread(() -> util.printTmpObj1(Thread.currentThread().getId())).start();
    }
    /**
     * 1s
     * @param util
     */
    public static final void testTmp1Tmp1(ThreadLock_Util util) {
        new Thread(() -> util.printTmpObj1(Thread.currentThread().getId())).start();
        new Thread(() -> util.printTmpObj1(Thread.currentThread().getId())).start();
    }
}

class ThreadTest extends Thread {
    private ThreadLock_Util thread;

    public ThreadTest(ThreadLock_Util t9) {
        this.thread = t9;
    }

    @Override
    public void run() {
        thread.printObject1(Thread.currentThread().getId());
        System.out.println(Thread.currentThread().getId() + " end");
    }
}


class ThreadLock_Util {
    /**
     * 验证锁的是this指向的对象,当前对象
     *
     * @param l
     */
    public synchronized void printObject1(long l) {
        System.out.println(l);
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /**
     * 验证锁的是this指向的对象,当前对象
     *
     * @param l
     */
    public synchronized void printObject2(long l) {
        System.out.println(l);
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    /**
     * 验证锁的是本类
     *
     * @param l
     */
    public static synchronized void printStatic1(long l) {
        System.out.println(l);
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    /**
     * 验证锁的是本类
     *
     * @param l
     */
    public static synchronized void printStatic2(long l) {
        System.out.println(l);
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    /**
     * 验证锁的是本类
     *
     * @param l
     */
    public void printStaticWithClass(long l) {
        synchronized (this.getClass()) {
            System.out.println(l);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    /**
     * 验证锁的是临时对象
     *
     * @param l
     */
    public void printTmpObj1(long l) {
        synchronized (new Object()) {
            System.out.println(l);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    /**
     * 验证锁的是临时对象
     *
     * @param l
     */
    public void printTmpObj2(long l) {
        synchronized (new Object()) {
            System.out.println(l);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    /**
     * 验证锁的是this指向的对象,当前对象
     *
     * @param l
     */
    public void printThisObj1(long l) {
        synchronized (this) {
            System.out.println(l);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    /**
     * 验证锁的是this指向的对象,当前对象
     *
     * @param l
     */
    public void printThisObj2(long l) {
        synchronized (this) {
            System.out.println(l);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
}