对于java多线程相信很多人都应该很了解了，那么对于java多线程的wait，notify你又了解多少呢?一起通过下面的内容对这方面进行一下了解吧。
注意：
涉及到了对象锁，Wait、Notify一定要在synchronized里面进行使用;Wait必须暂定当前正在执行的线程,并释放资源锁,让其他线程可以有机会运行;notify/notifyall: 唤醒线程。
共享变量
public class ShareEntity
{
private String name;
// 线程通讯标识
private Boolean flag = false;
public ShareEntity()
{}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public Boolean getFlag()
{
return flag;
}
public void setFlag(Boolean flag)
{
this.flag = flag;
}
}线程1(生产者)
public class CommunicationThread1 extends Thread
{
private ShareEntity shareEntity;
public CommunicationThread1(ShareEntity shareEntity)
{
this.shareEntity = shareEntity;
}
@Override
public void run()
{
int num = 0;
while (true)
{
synchronized(shareEntity)
{
if (shareEntity.getFlag())
{
try
{
shareEntity.wait();
}
catch (InterruptedException e)
{
e.printStackTrace();
}
}
if (num % 2 == 0)
shareEntity.setName("thread1-set-name-0");
else
shareEntity.setName("thread1-set-name-1");
num++;
shareEntity.setFlag(true);
shareEntity.notify();
}
}
}
}线程2(消费者)
public class CommunicationThread2 extends Thread
{
private ShareEntity shareEntity;
public CommunicationThread2(ShareEntity shareEntity)
{
this.shareEntity = shareEntity;
}
@Override
public void run()
{
while (true)
{
synchronized(shareEntity)
{
if (!shareEntity.getFlag())
{
try
{
shareEntity.wait();
}
catch (InterruptedException e)
{
e.printStackTrace();
}
}
System.out.println(shareEntity.getName());
shareEntity.setFlag(false);
shareEntity.notify();
}
}
}
}请求
@RequestMapping("test-communication")
public void testCommunication()
{
ShareEntity shareEntity = new ShareEntity();
CommunicationThread1 thread1 = new CommunicationThread1(shareEntity);
CommunicationThread2 thread2 = new CommunicationThread2(shareEntity);
thread1.start();
thread2.start();
}结果
thread1 - set - name - 0 thread1 - set - name - 1 thread1 - set - name - 0 thread1 - set - name - 1 thread1 - set - name - 0 thread1 - set - name - 1 thread1 - set - name - 0
以上就是对于java多线程wait，notify的简单介绍了，更多java常见问题及解决方法，可以继续通过奇Q工具网来了解哦。
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