You should always use static constants when referencing Strings that are used in more than one place - if you had "sucess", your program would compile ok, but you would get a runtime exception when your action is accessed and Struts looked for the mapping for "sucess" - possibly after deployment if your test coverage is inadequate, but at the earliest once you've dropped your app into your webapps directory. If you have Tokens.SUCESS_KEY, your program wouldn't compile and you could fix the error immediately.I have seen this used in several places and I have to ask, why? Ted Husted uses it in Scaffold and there are several examples around the web that use it as well. What am I talking about?
consider this short code snippet
return mapping.findForward(Tokens.SUCCESS_KEY);
How is that any different than
return mapping.findForward("success");
Both are in english, one just resolves to a variable the other is static. I guess I could understand the use of tokens for placing keys into the request scope since you might one day find you have a conflict, but besides that, what is the purpose?
Dan
Paul
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