/*服务器端*/
public class TCPServer
{
    public static void main(String[] args) throws Exception
    {
        ServerSocket ss = new ServerSocket(6666);
        while (true)
        {
            Socket s = ss.accept();
            System.out.println("A socket has connected!");
        }
    }
}

/*客户端*/
public class TCPClient
{
    public static void main(String[] args) throws Exception
    {
        Thread.sleep(1000);
        Socket s = new Socket("127.0.0.1", 6666);
    }
}