class Printer extends Thread
{
Vector task = new Vector();
boolean runing = false;
public void start()
{
runing = true;
super.start();
}
public void run()
{
try
{
System.out.println("打印开始");
while (runing)
{
synchronized (this)
{
while ((task.size() == 0) && runing)
{
// 如果任务列表为空，而且线程还允许运行,则等待任务
System.out.println("没有什么内容可以打印了，等待中~~~~");
wait();
System.out.println("等待结束,准备打印内容");
}
}
if (runing)
{
//for(int i=0;i<task.size();i++)
System.out.println("任务是: " + task.lastElement());
task.remove(0);
}
}
System.out.println("打印结束");
} catch (Exception e)
{
// TODO: handle exception
e.printStackTrace();
}
}
// 添加待打印的任务
public void addTask(String s)
{
synchronized (this)
{
this.task.add(s);
//this.task.add(s);
//this.task.add(s);
System.out.println("有内容可以打印了 唤醒打印线程");
notify();
// notifyAll();
}
}
public void stopPrinter()
{
this.runing = false;
synchronized (this)
{
System.out.println("停止打印线程 ");
notify();
// noitfyAll();
}
}
}
public class WaitNotify
{
public static void main(String[] args)
{
Printer printer = new Printer();
printer.start();
try
{
Thread.sleep(2000);
for (int i = 0; i < 500; i++)
{
Thread.sleep(1000);
printer.addTask("打印的i的结果是" + i);
}
} catch (InterruptedException e)
{
// TODO: handle exception
e.printStackTrace();
}
printer.stopPrinter();
}
}