多线程代码示例

package test.synchornize;

import java.util.concurrent.locks.*;

class runab implements Runnable{
    boolean x = true;
    static Lock lock = new ReentrantLock();
    static Condition con1 = lock.newCondition();
    static Condition con2 = lock.newCondition();
    runab(boolean x){
        this.x = x;
    }
    public void run() {
        lock.lock();
        try {
            System.out.println("Start---" + Thread.currentThread().getName());
            if(x) {
                x = false;
                //try {con1.await();con2.await();} catch (InterruptedException e) {}
                try {con1.await();} catch (InterruptedException e) {}
            }
            System.out.println("End---" + Thread.currentThread().getName());
        } finally {

            //con2.signalAll();
            con1.signalAll();
            lock.unlock();
        }
    }
}

public class showLock {

    public static void main(String[] args) {
        runab rab = new runab(true);
        runab rab1 = new runab(false);
        Thread th = new Thread(rab);
        Thread th1 = new Thread(rab1);
        th.start();
        try {
            Thread.sleep(100);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        th1.start();
        
    }

}