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J2EE, JSTL, and JSF questions

James Music
Posts: 2
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I am trying to learn J2EE/JSTL/JSF and have quite a few general questions. Any help on any of these is appreciated.

1) Is there a way, just by using J2EE/Java to "manipulate" an XML file. Not just parse and read it's data but actually add nodes to the file?

2) I've been reading quite a bit on JSTL and JSF recently. Is JSF supposed to be an alternative to Struts and JSTL an alternative to scriptlet coding?

3) I am also working on creating a message board but throwing around a couple of ways to implement it. Either (a) using a database to store posts and a JSP interface or (b) using an XML document to store postings. Which of these two seem best or is there a better option?

4) Is there an easy way to call Php from a Java program? I need to invoke a php program when a user clicks on a link on a JSP page I have.
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