编写基于Java的Web应用程序并在个人计算机上测试它需要什么？

I currently have Apache HTTP Server, but I'm guessing I'll need Tomcat (and then have to configure it in a way that makes it not open to the public), a Java JDK (which I already have, but should probably update), and an IDE (I have Eclipse). But what else should I have or know before starting?I currently have Apache HTTP Server, but I'm gu