import java.net.SocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;

public class NIOTest {
    public static void main(String[] args) throws Exception {
        ServerSocketChannel server = ServerSocketChannel.open();
        server.bind(null);
        SocketAddress saddr = server.getLocalAddress();
        SocketChannel client = SocketChannel.open(saddr);
        System.out.println(client);
        client.close();
        ByteBuffer buf = ByteBuffer.wrap("Hello world".getBytes());
        client.write(buf);
    }
}

throws AsynchronousCloseException instead of ChannelClosedException