问自上次接收数据报以来的Java超时

EN

package acast;

import java.net.SocketException;
import java.util.concurrent.ConcurrentLinkedQueue;

public class ACast {

    private ConcurrentLinkedQueue<String> queue;

    public ACast() throws SocketException{
        queue = new ConcurrentLinkedQueue<String>();
        UDPServer srv = new UDPServer(4321);
        srv.addUDPacketListener(new UDPPacketListener() {
            @Override
            public void onPacketReceived(String packet) {
                ACast.this.queue.offer(packet);
            }
        });
        srv.start();
    }

    public static void main(String[] args) throws SocketException {
        try{
            new ACast();   
        }
        catch(SocketException e){
            //e.printStackTrace();
            System.out.println("Socket allready opened. Can't start application");
            System.exit(1);
        }
    }

}