Download the example source code in the book

Client.java	MultiThreadServer.java	RegistrationClient.java
RegistrationClientUsingObjectStream.java	RegistrationServer.java	RegistrationServerUsingObjectStream.java
Server.java	TicTacToeClient.java	TicTacToeConstants.java
TicTacToeServer.java	ViewRemoteFile.java	ViewWebPage.java
WebBrowser.java