lock实现线程锁

package com.freeflying.thread.reentrantlock;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class ReentrantLockReleaseSynch {
	public static void main(String[] args) {
		ReentrantLockReleaseSynchEx synchEx=new ReentrantLockReleaseSynchEx();
		ReentrantLockReleaseSynchThread thread1=new ReentrantLockReleaseSynchThread(synchEx);
		ReentrantLockReleaseSynchThread thread2=new ReentrantLockReleaseSynchThread(synchEx);
		ReentrantLockReleaseSynchThread thread3=new ReentrantLockReleaseSynchThread(synchEx);
		thread1.start();
		thread2.start();
		thread3.start();
	}
}
class ReentrantLockReleaseSynchEx{
	private Lock lock=new ReentrantLock();
	public void testMethod() {
		lock.lock();
		for (int i = 0; i < 5; i++) {
			System.out.println("ThreadName="+Thread.currentThread().getName()+"--"+i);
		}
		lock.unlock();
	}
}
class ReentrantLockReleaseSynchThread extends Thread{
	private ReentrantLockReleaseSynchEx synchEx;
	public ReentrantLockReleaseSynchThread(ReentrantLockReleaseSynchEx synchEx) {
		this.synchEx = synchEx;
	}
	@Override
	public void run() {
		synchEx.testMethod();
	}
}

结果

ThreadName=Thread-1--0
ThreadName=Thread-1--1
ThreadName=Thread-1--2
ThreadName=Thread-1--3
ThreadName=Thread-1--4
ThreadName=Thread-2--0
ThreadName=Thread-2--1
ThreadName=Thread-2--2
ThreadName=Thread-2--3
ThreadName=Thread-2--4
ThreadName=Thread-0--0
ThreadName=Thread-0--1
ThreadName=Thread-0--2
ThreadName=Thread-0--3
ThreadName=Thread-0--4