java讀寫鎖ReadWriteLock

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package com.java.concurrent;import java.util.concurrent.locks.ReadWriteLock;import java.util.concurrent.locks.ReentrantReadWriteLock;public class TestReadWriteLock {    public static void main(String[] args) {        final ReadWriteLockDemo rw2 = new ReadWriteLockDemo();        new Thread(new Runnable() {                        public void run() {                try {                    Thread.sleep(2000);                } catch (InterruptedException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }                rw2.set(20);                            }        },"Write:").start();                new Thread(new Runnable() {                        public void run() {                while(true)                rw2.get();            }        },"Read").start();            }}class ReadWriteLockDemo {    private int number = 0;    // 定義一個讀寫鎖    private ReadWriteLock lock = new ReentrantReadWriteLock();    // 讀    public void get() {        //添加讀鎖        lock.readLock().lock();        try {            System.out.println(Thread.currentThread().getName() + ":" + number);        } finally {            lock.readLock().unlock();        }    }    // 寫資料    public void set(int number) {        //建立寫鎖        lock.writeLock().lock();        try{        System.out.println(Thread.currentThread().getName()+":"+number);        this.number = number;        }finally{            lock.writeLock().unlock();        }    }}

 

java讀寫鎖ReadWriteLock