- class Ticket implements Runnable
- {
- private int tick = 100;
- Object obj = new Object();
- public void run()
- {
- <font color="#ff0000"> while(true)</font>
- {
- synchronized(obj)
- {
- if(tick>0)
- {
- try{Thread.sleep(20);}catch(Exception e){}
- System.out.println("sale tick..."+tick--);
- }
- }
- }
- }
- }
- class Demo8
- {
- public static void main(String[] args)
- {
- Ticket t = new Ticket();
- Thread t1 = new Thread(t);
- Thread t2 = new Thread(t);
- Thread t3 = new Thread(t);
- Thread t4 = new Thread(t);
- t1.start();
- t2.start();
- t3.start();
- t4.start();
- }
- }
复制代码 请问其中的While(true)的含义是什么?为什么要写这个?
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