然而，在Java中创建服务器是这样完成的：
ServerSocket server = new ServerSocket(8888); // 8888 is the port the server will listen on.
Socket connectionToTheServer = new Socket("localhost", 8888); // First param: server-address, Second: the port
但是现在还没有建立连接。服务器必须接受等待的客户端（正如我在上面提到的）：
Socket connectionToTheClient = server.accept();
完成了！你的连接已经建立！通信就像文件IO一样。唯一需要记住的是，你必须决定何时要刷新缓冲区并通过套接字发送数据。
使用PrintStream进行文本写入非常方便：
OutputStream out = yourSocketHere.getOutputStream();
PrintStream ps = new PrintStream(out, true); // Second param: auto-flush on write = true
ps.println("Hello, Other side of the connection!");
// Now, you don't have to flush it, because of the auto-flush flag we turned on.
使用BufferedReader进行文本读取是一个很好（最佳*）的选择：
InputStream in = yourSocketHere.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String line = br.readLine();
System.out.println(line); // Prints "Hello, Other side of the connection!", in this example (if this would be the other side of the connection.
InputStream in = socket.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(in));
// The other side says hello:
String text = br.readLine();
// For whatever reason, you want to read one single byte from the stream,
// That single byte, just after the newline:
byte b = (byte) in.read();
String className = ...;
String methodName = ...;
Class[] methodParamTypes = ...;
Object[] methodParams = ...;
Class cl = Class.forName(className);
Method me = cl.getDelcaredMethod(methodName, methodParamTypes);
Object returnValue = me.invoke(this, methodParams);
一旦您拥有了对象，您可以使用序列化将其发送到连接的另一侧：ObjectOutputStreams和ObjectInputStreams。使用这两个类，您可以通过流写入和读取对象。
Object obj = ...; // Your object you want to write through the stream. (Needs to implement java.io.Serializable)
ObjectOutputStream oos = new ObjectOuptputStream(socket.getOutputStream());
oos.writeObject(oos);
oos.reset(); // (***)
// Don't close it! Otherwise the connection will be closed as well.
在连接的另一端:
ObjectInputStream ois = new ObjectInputStream(socket.getInputStream());
Object object = ois.readObject(); // Read the object
// Don't close it!
// Then cast it to whatever you want.
(***): 关于reset()的更多信息以及何时使用它，请查看我的问题。
Glassfish可能比你需要的功能更强大，但我不会放弃利用现有库。
一些套接字选项：
如果您决定更多地走向Web服务而不是套接字，则Jetty是适合小型HTTP的选择。