import javax.jmdns.impl.tasks.RecordReaper; //导入依赖的package包/类
/**
 * Create an instance of JmDNS and bind it to a specific network interface given its IP-address.
 *
 * @param address
 *            IP address to bind to.
 * @param name
 *            name of the newly created JmDNS
 * @throws java.io.IOException
 */
public JmDNSImpl(InetAddress address, String name) throws IOException
{
    super();
    if (logger.isLoggable(Level.FINER))
    {
        logger.finer("JmDNS instance created");
    }
    _cache = new DNSCache(100);

    _listeners = Collections.synchronizedList(new ArrayList<DNSListener>());
    _serviceListeners = new ConcurrentHashMap<String, List<ServiceListenerStatus>>();
    _typeListeners = Collections.synchronizedSet(new HashSet<ServiceTypeListenerStatus>());
    _serviceCollectors = new ConcurrentHashMap<String, ServiceCollector>();

    _services = new ConcurrentHashMap<String, ServiceInfo>(20);
    _serviceTypes = new ConcurrentHashMap<String, Set<String>>(20);

    _localHost = HostInfo.newHostInfo(address, this);
    _name = (name != null ? name : _localHost.getName());

    _timer = new Timer("JmDNS(" + _name + ").Timer", true);
    _stateTimer = new Timer("JmDNS(" + _name + ").State.Timer", false);
    // _cancelerTimer = new Timer("JmDNS.cancelerTimer");

    // (ldeck 2.1.1) preventing shutdown blocking thread
    // -------------------------------------------------
    // _shutdown = new Thread(new Shutdown(), "JmDNS.Shutdown");
    // Runtime.getRuntime().addShutdownHook(_shutdown);

    // -------------------------------------------------

    // Bind to multicast socket
    this.openMulticastSocket(this.getLocalHost());
    this.start(this.getServices().values());

    new RecordReaper(this).start(_timer);
}
 

import javax.jmdns.impl.tasks.RecordReaper; //导入依赖的package包/类
@Override
public void startReaper() {
    new RecordReaper(_jmDNSImpl).start(_timer);
}