java 模拟selector的附带功能

package com.event;
import java.util.Map;
public interface EventListener {
 void onEvent(Map event);
}
package com.socket;
import java.nio.ByteBuffer;
import java.util.HashMap;
import com.event.EventListener;
/*
 * 预处理类
 */
public class BaseObject {
 private boolean flag;
 private ByteBuffer receivebuffer= ByteBuffer.allocate(20000);
 
 public void print(){
  System.out.println("hello!");
  flag=true;
 }
 public boolean isFlag() {
  return flag;
 }
 public void setFlag(boolean flag) {
  this.flag = flag;
 }
 public ByteBuffer getReceivebuffer() {
  return receivebuffer;
 }
 
 
 public void invoke(EventListener event){
  
  System.out.println("BaseObject invoke");
  HashMap<String, String> map=new HashMap<String, String>();
  map.put("key", "wellcome here");
  event.onEvent(map);
 }
}
package com.socket;
public class Client{
     /*
      * 对应的远程客户端
      */
 public Client(){
  
 }
 public void run( ) {
  System.out.println("client run");
  
 }
}
package com.socket;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
public class Server {
 private ServerSocketChannel channel;
 private SocketController sc;
 public Server() {
  try {
   sc = new SocketController();
   sc.start();
   channel = ServerSocketChannel.open();
   channel.socket().bind(new InetSocketAddress(8080));
  } catch (IOException e) {
   e.printStackTrace();
  }
 }
 private void start