- //public class Temp {
- // public static void main(String[] args) {
- //
- // }
- //}
- import java.util.concurrent.locks.Condition;
- import java.util.concurrent.locks.Lock;
- import java.util.concurrent.locks.ReentrantLock;
- public class Temp {
- public static void main(String[] args) {
- Ticket t = new Ticket(100);
- for(int i=0; i<5; i++){
- new Thread(t,"窗口"+i).start();
- try{
- Thread.sleep(200);
- }catch(InterruptedException e){
- e.printStackTrace();
- }
- // t.flag = false;//设为flase会导致只有第一个线程能进入if(flag),后面的线程无法运行,如图所示
- }
- }
- }
- class Ticket implements Runnable{
- private int num;
- private String id;
- boolean flag = true;
- Lock lock = new ReentrantLock();
- Condition con = lock.newCondition();
- public Ticket(int num){
- this.num = num;
- }
- public int getNum(){
- return num;
- }
- public void run(){
- // lock.lock();
- if(flag){
- while(true){
- synchronized(this){
- if(num > 0){
- try{
- Thread.sleep(20);
- System.out.println(Thread.currentThread().getName()+"----"+num--);
- }catch(InterruptedException e){
- e.printStackTrace();
- }
- // lock.unlock();
- this.notifyAll();
- // break; //break会当前进程
- }
- else{
- // lock.unlock();
- break;
- }
- }
- }
- }
- }
- }
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