实现Runnable接口（定义get 和set方法） 处理高并发的读写互斥，写写互斥，读读不互斥

创建一个实体类

public class Data {

    private int data;
    private ReadWriteLock lock = new ReentrantReadWriteLock();
    public void  set(int data){
        lock.writeLock().lock(); //取到写锁
        try {
            System.out.println(Thread.currentThread().getName()+"准备写入数据！");
            try {
                Thread.sleep(0);
            }catch (InterruptedException e) {
                e.printStackTrace(); //打印异常信息
            }
            this.data = data;
            System.out.println(Thread.currentThread().getName()+"写入"+this.data);
        }finally {
            lock.writeLock().unlock();  //释放写锁！
        }
    }
    public  void  get(){
        lock.readLock().lock();  // 取到读锁！
       try {
           System.out.println(Thread.currentThread().getName()+"准备读取数据");
           try {
               Thread.sleep(20);
           } catch (InterruptedException e) {
               e.printStackTrace(); //打印异常
           }
           System.out.println(Thread.currentThread().getName()+"读取数据！");
       }finally {
           lock.readLock().unlock();  //释放读锁！
       }
    }
}

创建一个函数实体类 验证 多线程数据共享处理高并发

public class TestDataMian {

    public static void main(String[] args) {
        final Data data = new Data();
        for (int i = 0; i < 3; i++) {
            new Thread(new Runnable() {
                @Override
                public void run() {
                    for (int j = 0; j < 5; j++) {
                        data.set(new Random().nextInt(30));
                    }
                }
            },"小明").start();
        }
        for (int i = 0; i < 3; i++) {
            new Thread(new Runnable() {
                @Override
                public void run() {
                    for (int j = 0; j < 5; j++) {
                        data.get();
                    }
                }
            }).start();
        }
    }
}

自己测试的 如有错误 欢迎指出！