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hi,
I was just wondering if I define a helper bean and add it to the src directory of a web project and then use it in a jsp via the <jsp:useBean> tag do i need to add any XDoclet annotations to the class. What deployment descriptor information is required if any? I can’t seem to find any examples not involving jsf and searching for java beans tends to bring up EJB stuff. Any help would be great.
Ian
Ian,
You don’t need to do anything, just create the class, jsp:useBean it and you are done, now you can use it. If you are new to Java web development, the term “Bean” is thrown around *everywhere*, so when you see someone say “Oh yea just write a Bean to do that” bean means “A collection of properties (get/set) and business logic”… now depending on the context (a JSF app, a J2EE app, a Tapestry app, etc.) the actual “Bean” itself will mean different things.JSF is actually a good example of Beans, there is no super class or special interface to extend or implement like EJB, it is just a class that has a bunch of properties on it, and some methods that do stuff with the info.
When people say “POJO” when describing beans, they usually mean just a class with a bunch of properties (get/setters) used to store/retrieve info.
cool! I had noticed the discontinuity between the various uses of Beans. Thanks for clearing that up.
🙂
