Java基础多线程之后台守护线程,setDaemon(true)
class DaemonThreadDemo
{
public static void main(String[] args)
{
StopThread stopThread = new StopThread();
Thread t1 = new Thread(stopThread,"t1");
Thread t2 = new Thread(stopThread,"t2");
t1.setDaemon(true);
t2.setDaemon(true);
t1.start();
t2.start();
int num=0;
while(true)
{
if(num++ ==60)
{
stopThread.changeFlag();
break;
}
System.out.println(Thread.currentThread().getName()+ " runing.... "+ num);
}
System.out.println("end");
}
}
class StopThread implements Runnable
{
private boolean flag = true;
public synchronized void run()
{
while(this.flag)
{
try
{
wait();
}
catch(InterruptedException ex)
{
System.out.println(Thread.currentThread().getName() + ": Exception");
this.changeFlag();
}
System.out.println(Thread.currentThread().getName() + ": runing...");
}
}
public void changeFlag()
{
this.flag = false;
}
}
{
public static void main(String[] args)
{
StopThread stopThread = new StopThread();
Thread t1 = new Thread(stopThread,"t1");
Thread t2 = new Thread(stopThread,"t2");
t1.setDaemon(true);
t2.setDaemon(true);
t1.start();
t2.start();
int num=0;
while(true)
{
if(num++ ==60)
{
stopThread.changeFlag();
break;
}
System.out.println(Thread.currentThread().getName()+ " runing.... "+ num);
}
System.out.println("end");
}
}
class StopThread implements Runnable
{
private boolean flag = true;
public synchronized void run()
{
while(this.flag)
{
try
{
wait();
}
catch(InterruptedException ex)
{
System.out.println(Thread.currentThread().getName() + ": Exception");
this.changeFlag();
}
System.out.println(Thread.currentThread().getName() + ": runing...");
}
}
public void changeFlag()
{
this.flag = false;
}
}