고성능 네트워크 프로그래밍을 달성하기 위해 Java에서 NIO를 사용하는 방법은 무엇입니까?

ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();
serverSocketChannel.socket().bind(new InetSocketAddress(8080));
serverSocketChannel.configureBlocking(false);

Selector selector = Selector.open();
serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT);

while (true) {
    selector.select();
    Set<SelectionKey> selectedKeys = selector.selectedKeys();
    
    for (SelectionKey key : selectedKeys) {
        if (key.isAcceptable()) {
            // 处理连接请求
            SocketChannel clientChannel = serverSocketChannel.accept();
            clientChannel.configureBlocking(false);
            clientChannel.register(selector, SelectionKey.OP_READ);
        }
    }
    selectedKeys.clear();
}

while (true) {
    selector.select();
    Set<SelectionKey> selectedKeys = selector.selectedKeys();
    
    for (SelectionKey key : selectedKeys) {
        if (key.isReadable()) {
            // 处理读取事件
            SocketChannel clientChannel = (SocketChannel) key.channel();
            ByteBuffer buffer = ByteBuffer.allocate(1024);
            int bytesRead = clientChannel.read(buffer);
            if (bytesRead == -1) {
                // 连接关闭
                clientChannel.close();
            } else {
                // 处理读取到的数据
                // ...
            }
        } else if (key.isWritable()) {
            // 处理写入事件
            SocketChannel clientChannel = (SocketChannel) key.channel();
            ByteBuffer buffer = ByteBuffer.allocate(1024);
            // 填充写入的数据到buffer
            // ...
            buffer.flip();
            clientChannel.write(buffer);
        }
    }
    selectedKeys.clear();
}