java writelock 实例

import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;


public class TableControl implements Runnable {


    private ReadWriteLock readWriteLock = new ReentrantReadWriteLock();;


    private int i = 0;


    private void add(int v) {
        writeLock().lock();
        i += v;
        System.out.println(i);
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        writeLock().unlock();
    }


    public Lock readLock() {
        return readWriteLock.readLock();
    }


    public Lock writeLock() {
        return readWriteLock.writeLock();
    }


    @Override
    public void run() {
        add(100);
    }

}

public class TestMain {


    public static void main(String args[]){
       
        TableControl tc=new TableControl();
        Thread t1 =new Thread(tc);
        Thread t2 =new Thread(tc);
        
        
        t1.start();
        t2.start();
        
        
    } 
    
    
}