Type-specific application-scoped error messages for standard conversion

Hello all. Can I declare application-scoped error messages for standard conversion that are specific to the type being converted? Something like: "For all int conversion erros in the whole application use message 'foo'; for all date conversion errors in the whole application use message 'bar'; and

Page composition strategy

Hello. I'm a beginner in web development with Struts2 and I'm planning the structure of my application. Let me tell you my problem. With 'page composition strategy' I mean the strategy for making all pages in the application share the same HTML structure (header, left-column, content, right colum