public static void main(String[] args) {
    System.out.println(new Date() + ",server shutdown!");
  }

public enum LifecycleState {

  NEW, //新生

  INITIALIZING, INITIALIZED, //初始化

  STARTING, STARTED, //启动

  SUSPENDING, SUSPENDED, //暂停

  RESUMING, RESUMED,//恢复

  DESTROYING, DESTROYED,//销毁

  FAILED;//失败

}

public interface ILifecycle {

  /**
   * 初始化
   * 
   * @throws LifecycleException
   */
  public void init() throws LifecycleException;

  /**
   * 启动
   * 
   * @throws LifecycleException
   */
  public void start() throws LifecycleException;

  /**
   * 暂停
   * 
   * @throws LifecycleException
   */
  public void suspend() throws LifecycleException;

  /**
   * 恢复
   * 
   * @throws LifecycleException
   */
  public void resume() throws LifecycleException;

  /**
   * 销毁
   * 
   * @throws LifecycleException
   */
  public void destroy() throws LifecycleException;

  /**
   * 添加生命周期监听器
   * 
   * @param listener
   */
  public void addLifecycleListener(ILifecycleListener listener);

  /**
   * 删除生命周期监听器
   * 
   * @param listener
   */
  public void removeLifecycleListener(ILifecycleListener listener);

}

public interface ILifecycleListener {

  /**
   * 对生命周期事件进行处理
   * 
   * @param event 生命周期事件
   */
  public void lifecycleEvent(LifecycleEvent event);
}

public final class LifecycleEvent {

  private LifecycleState state;

  public LifecycleEvent(LifecycleState state) {
    this.state = state;
  }

  /**
   * @return the state
   */
  public LifecycleState getState() {
    return state;
  }

}

public abstract class AbstractLifecycle implements ILifecycle {

  private List<ILifecycleListener> listeners = new CopyOnWriteArrayList<ILifecycleListener>();

  /**
   * state 代表当前生命周期状态
   */
  private LifecycleState state = LifecycleState.NEW;

  /*
   * @see ILifecycle#init()
   */
  @Override
  public final synchronized void init() throws LifecycleException {
    if (state != LifecycleState.NEW) {
      return;
    }

    setStateAndFireEvent(LifecycleState.INITIALIZING);
    try {
      init0();
    } catch (Throwable t) {
      setStateAndFireEvent(LifecycleState.FAILED);
      if (t instanceof LifecycleException) {
        throw (LifecycleException) t;
      } else {
        throw new LifecycleException(formatString(
            "Failed to initialize {0}, Error Msg: {1}", toString(), t.getMessage()), t);
      }
    }
    setStateAndFireEvent(LifecycleState.INITIALIZED);
  }

  protected abstract void init0() throws LifecycleException;

  /*
   * @see ILifecycle#start()
   */
  @Override
  public final synchronized void start() throws LifecycleException {
    if (state == LifecycleState.NEW) {
      init();
    }

    if (state != LifecycleState.INITIALIZED) {
      return;
    }

    setStateAndFireEvent(LifecycleState.STARTING);
    try {
      start0();
    } catch (Throwable t) {
      setStateAndFireEvent(LifecycleState.FAILED);
      if (t instanceof LifecycleException) {
        throw (LifecycleException) t;
      } else {
        throw new LifecycleException(formatString("Failed to start {0}, Error Msg: {1}",
            toString(), t.getMessage()), t);
      }
    }
    setStateAndFireEvent(LifecycleState.STARTED);
  }

  protected abstract void start0() throws LifecycleException;

  /*
   * @see ILifecycle#suspend()
   */
  @Override
  public final synchronized void suspend() throws LifecycleException {
    if (state == LifecycleState.SUSPENDING || state == LifecycleState.SUSPENDED) {
      return;
    }

    if (state != LifecycleState.STARTED) {
      return;
    }

    setStateAndFireEvent(LifecycleState.SUSPENDING);
    try {
      suspend0();
    } catch (Throwable t) {
      setStateAndFireEvent(LifecycleState.FAILED);
      if (t instanceof LifecycleException) {
        throw (LifecycleException) t;
      } else {
        throw new LifecycleException(formatString("Failed to suspend {0}, Error Msg: {1}",
            toString(), t.getMessage()), t);
      }
    }
    setStateAndFireEvent(LifecycleState.SUSPENDED);
  }

  protected abstract void suspend0() throws LifecycleException;

  /*
   * @see ILifecycle#resume()
   */
  @Override
  public final synchronized void resume() throws LifecycleException {
    if (state != LifecycleState.SUSPENDED) {
      return;
    }

    setStateAndFireEvent(LifecycleState.RESUMING);
    try {
      resume0();
    } catch (Throwable t) {
      setStateAndFireEvent(LifecycleState.FAILED);
      if (t instanceof LifecycleException) {
        throw (LifecycleException) t;
      } else {
        throw new LifecycleException(formatString("Failed to resume {0}, Error Msg: {1}",
            toString(), t.getMessage()), t);
      }
    }
    setStateAndFireEvent(LifecycleState.RESUMED);
  }

  protected abstract void resume0() throws LifecycleException;

  /*
   * @see ILifecycle#destroy()
   */
  @Override
  public final synchronized void destroy() throws LifecycleException {
    if (state == LifecycleState.DESTROYING || state == LifecycleState.DESTROYED) {
      return;
    }

    setStateAndFireEvent(LifecycleState.DESTROYING);
    try {
      destroy0();
    } catch (Throwable t) {
      setStateAndFireEvent(LifecycleState.FAILED);
      if (t instanceof LifecycleException) {
        throw (LifecycleException) t;
      } else {
        throw new LifecycleException(formatString("Failed to destroy {0}, Error Msg: {1}",
            toString(), t.getMessage()), t);
      }
    }
    setStateAndFireEvent(LifecycleState.DESTROYED);
  }

  protected abstract void destroy0() throws LifecycleException;

  /*
   * @see
   * ILifecycle#addLifecycleListener(ILifecycleListener)
   */
  @Override
  public void addLifecycleListener(ILifecycleListener listener) {
    listeners.add(listener);
  }

  /*
   * @see
   * ILifecycle#removeLifecycleListener(ILifecycleListener)
   */
  @Override
  public void removeLifecycleListener(ILifecycleListener listener) {
    listeners.remove(listener);
  }

  private void fireLifecycleEvent(LifecycleEvent event) {
    for (Iterator<ILifecycleListener> it = listeners.iterator(); it.hasNext();) {
      ILifecycleListener listener = it.next();
      listener.lifecycleEvent(event);
    }
  }

  protected synchronized LifecycleState getState() {
    return state;
  }

  private synchronized void setStateAndFireEvent(LifecycleState newState) throws LifecycleException {
    state = newState;
    fireLifecycleEvent(new LifecycleEvent(state));
  }

  private String formatString(String pattern, Object... arguments) {
    return MessageFormat.format(pattern, arguments);
  }

  /*
   * @see java.lang.Object#toString()
   */
  @Override
  public String toString() {
    return getClass().getSimpleName();
  }
}

protected abstract void init0() throws LifecycleException;
protected abstract void start0() throws LifecycleException;
protected abstract void suspend0() throws LifecycleException;
protected abstract void resume0() throws LifecycleException;
protected abstract void destroy0() throws LifecycleException;

public class DefaultLifecycle extends AbstractLifecycle {

  /*
   * @see AbstractLifecycle#init0()
   */
  @Override
  protected void init0() throws LifecycleException {
    // do nothing
  }

  /*
   * @see AbstractLifecycle#start0()
   */
  @Override
  protected void start0() throws LifecycleException {
    // do nothing
  }

  /*
   * @see AbstractLifecycle#suspend0()
   */
  @Override
  protected void suspendInternal() throws LifecycleException {
    // do nothing
  }

  /*
   * @see AbstractLifecycle#resume0()
   */
  @Override
  protected void resume0() throws LifecycleException {
    // do nothing
  }

  /*
   * @see AbstractLifecycle#destroy0()
   */
  @Override
  protected void destroy0() throws LifecycleException {
    // do nothing
  }

}

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class SocketServer extends DefaultLifecycle {

  private ServerSocket acceptor = null;
  private int port = 9527;
  /* 
   * @see DefaultLifecycle#init0()
   */
  @Override
  protected void init0() throws LifecycleException {
    try {
      acceptor = new ServerSocket(port);
    } catch (IOException e) {
      throw new LifecycleException(e);
    }
  }

  /* 
   * @see DefaultLifecycle#start0()
   */
  @Override
  protected void start0() throws LifecycleException {
    Socket socket = null;
    try {
      socket = acceptor.accept();
      //do something with socket
      
      
    } catch (IOException e) {
      throw new LifecycleException(e);
    } finally {
      if (socket != null) {
        try {
          socket.close();
        } catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
      }
    }
  }

  /* 
   * @see DefaultLifecycle#destroy0()
   */
  @Override
  protected void destroy0() throws LifecycleException {
    if (acceptor != null) {
      try {
        acceptor.close();
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }
  }
}