Selectors and ServerSocketChannel

[bareya]

Hi I've problem with Selectors/Channels
I've found somewhere in web:
server:

byte[] data = new byte[255];
		for (int i = 0; i < data.length; i++) data[i] = (byte) i;
		
		    ServerSocketChannel server = ServerSocketChannel.open();
		    server.configureBlocking(false);
		    server.socket().bind(new InetSocketAddress(9000));
		    Selector selector = Selector.open();
		    server.register(selector, SelectionKey.OP_ACCEPT);
		    while (true) {
		      selector.select();
		      Set readyKeys = selector.selectedKeys();
		      Iterator iterator = readyKeys.iterator();
		      while (iterator.hasNext()) {
		        SelectionKey key = (SelectionKey) iterator.next();
		        iterator.remove();
		        if (key.isAcceptable()) {
		          SocketChannel client = server.accept();
		          System.out.println("Accepted connection from " + client);
		          client.configureBlocking(false);
		          ByteBuffer source = ByteBuffer.wrap(data);
		          SelectionKey key2 = client.register(selector, SelectionKey.OP_WRITE);
		          key2.attach(source);
		        } else if (key.isWritable()) {
		          SocketChannel client = (SocketChannel) key.channel();
		          ByteBuffer output = (ByteBuffer) key.attachment();
		          if (!output.hasRemaining()) {
		            output.rewind();
		          }
		          client.write(output);
		        }
		        key.channel().close();
		      }
		    }

and client:

public static void main(String[] args) throws Exception {
		    int port = 1919;
		    SocketAddress address = new InetSocketAddress("127.0.0.1", 9000);
		    SocketChannel client = SocketChannel.open(address);
		    ByteBuffer buffer = ByteBuffer.allocate(4);
		    IntBuffer view = buffer.asIntBuffer();
		    
		    for (int expected = 0;; expected++) {
		      client.read(buffer);
		      int actual = view.get();
		      buffer.clear();
		      view.rewind();
		      if (actual != expected) {
		        System.err.println("Expected " + expected + "; was " + actual);
		        break;
		      }
		      System.out.println(actual);
		    }
		  }

When I connect to server first time, everything is ok, server is working but when i try connect to server second time client gives me error:

Exception in thread "main" java.net.ConnectException: Connection refused: connect
	at sun.nio.ch.Net.connect(Native Method)
	at sun.nio.ch.SocketChannelImpl.connect(Unknown Source)
	at java.nio.channels.SocketChannel.open(Unknown Source)
	at LClient.main(LClient.java:100)

my firewall is off, I'm trying to use Selectors, but second conenction to server gives me that error,
please,
help
Peter