Synchronize锁对象

港控/mmm° 2022-05-15 01:50 231阅读 0赞

### Synchronize锁对象 ###

可以对任意的Object对象，进行加锁  
用法比较灵活

package com.bjsxt.base.sync006;
    
    /** * 使用synchronized代码块加锁,比较灵活 * */
    public class ObjectLock { 
    
        public void method1() {
            synchronized (this) { // 对象锁
                try {
                    System.out.println("do method1..");
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    
        public void method2() { // 类锁
            synchronized (ObjectLock.class) {
                try {
                    System.out.println("do method2..");
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    
        private Object lock = new Object();
    
        public void method3() { // 任何对象锁
            synchronized (lock) {
                try {
                    System.out.println("do method3..");
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    
        public static void main(String[] args) {
    
            final ObjectLock objLock = new ObjectLock();
            Thread t1 = new Thread(new Runnable() {
                @Override
                public void run() {
                    objLock.method1();
                }
            });
            Thread t2 = new Thread(new Runnable() {
                @Override
                public void run() {
                    objLock.method2();
                }
            });
            Thread t3 = new Thread(new Runnable() {
                @Override
                public void run() {
                    objLock.method3();
                }
            });
    
            t1.start();
            t2.start();
            t3.start();
    
        }
    
    }

运行  
![这里写图片描述][70]

[70]: /images/20220515/25ca7d82bd2a4fb4bac5163ecfb886bb.png