DelayQueue怎么在Java多線程并發(fā)開發(fā)中使用

public class KTV implements Runnable{
  private DelayQueue<KTVConsumer> queue = new DelayQueue<>();

  public void begin(String name,String boxNum,int money){

    KTVConsumer man = new KTVConsumer(name,boxNum,20l*money+System.currentTimeMillis());
    System.out.println(man.getName()+" 等人交了"+money+"元錢，進入"+man.getBoxNum()+"號包廂,開始K歌...");
    this.queue.add(man);
  }

  public void end(KTVConsumer man){
    System.out.println(man.getName()+" 等人所在的"+man.getBoxNum()+"號包廂,時間到...");
  }

  @Override
  public void run() {
    // TODO Auto-generated method stub
    while(true){
      try {
        KTVConsumer man = queue.take();
        end(man);
      } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }
  }

  public static void main(String args[]){
    try{
      System.out.println("KTV正常營業(yè)");
      System.out.println("================================");
      KTV ktv = new KTV();
      Thread sing = new Thread(ktv);
      sing.start();
      new Thread(new Runnable() {
        @Override
        public void run() {
          ktv.begin("張三", "111", 500);
        }
      }).start();

      new Thread(new Runnable() {
        @Override
        public void run() {
          ktv.begin("李四", "666", 200);
        }
      }).start();

      Thread.sleep(2000);
      new Thread(new Runnable() {
        @Override
        public void run() {
          ktv.begin("王五", "888", 100);
          System.out.println("================================");
        }
      }).start();

    }
    catch(Exception ex){

    }

  }
}
public class KTVConsumer implements Delayed{
  private String name;
  //截止時間
  private long endTime;
  //包廂號
  private String boxNum;

  public KTVConsumer(String name,String boxNum,long endTime){
    this.name=name;
    this.boxNum=boxNum;
    this.endTime=endTime;
  }

  public String getName(){
    return this.name;
  }

  public String getBoxNum(){
    return this.boxNum;
  }

  /**
   * 用來判斷是否到了截止時間
   */
  @Override
  public long getDelay(TimeUnit unit) {
    // TODO Auto-generated method stub
    return unit.convert(endTime - System.currentTimeMillis(), TimeUnit.MILLISECONDS);
  }

  /**
   * 相互比較排序用
   */
  @Override
  public int compareTo(Delayed o) {
    // TODO Auto-generated method stub
    if(o == null || ! (o instanceof KTVConsumer)) return 1;
    if(o == this) return 0;
    KTVConsumer s = (KTVConsumer)o;
    return endTime - s.endTime > 0 &#63; 1 :(endTime - s.endTime == 0 &#63; 0 : -1);
  }
}

KTV正常營業(yè)
================================
張三 等人交了500元錢，進入111號包廂,開始K歌...
李四 等人交了200元錢，進入666號包廂,開始K歌...
王五 等人交了100元錢，進入888號包廂,開始K歌...
================================
李四 等人所在的666號包廂,時間到...
王五 等人所在的888號包廂,時間到...
張三 等人所在的111號包廂,時間到...