说明： J2EE指南对于广大的Java程序员来说是一份不可或缺的资料了。这篇导论对于初次碰到J2EE的程序员来说有着同样的作用。它与Java指南一样都是一例子为中心。 (J2EE guide for the majority of Java programmers is an indispensable information. This introduction for the first time encountered J2EE programmers concerned have the same effect. With Java is a guide to the same center for example.)
