用户需要使用某个文件时，则需要将相应的文件处，同时注意文件中的package关键字（若存在package关键字，则需要将所有同package的文件拷贝到以该package为目录名的目录下面），然后用户就可以对源文件进行编译并运行得到本书中的运行结果。当然读者首先需要有一个Java的运行环境！

同时在每个文件夹下面如果再有其它类型的文件夹则是利用Jbuilder2来生成的项目文件及相应的Java文件，读者可以利用Jbuilder直接打开该工程即可后编译运行！

-user needs to use a certain document, you need to corresponding documentation, the same time to document the package keyword (if there is the keyword package, need all the same package of documents to a copy of the package for the directory name of the directory) Then users will be able to source documents to be compiled and run the operating results of the book. Of course readers first need is a Java runtime environment! At the same time each folder below if there are other types of files folder is used to generate Jbuilder2 items Head document and the corresponding Java documents, Readers can use Jbuilder open direct the project after the compiler can run!