Cindy:
> I'm trying to figure out <messageArg> tag. The specs say, "If the message
> corresponding to the given key is compound, that is, contains one or more
> variables, it can be supplied with argument values for these variables by
> using a <messageArg> subtag for each argument value"
>
> The example in the specs:
>
> <fmt:message key="Welcome">
> <fmt:messageArg value="$dateArg"/>
> </fmt:message>
>
> Does this mean that the 'Welcome' key contains more than one value? Is the
> <messageArg> tag printing a date that is grabbed from the resource bundle?
In the above example, the message key "Welcome" could have been mapped
to a message of the following form:
Welcome! Today's date: {0}
which would have been looked up in the appropriate resource bundle.
"{0}" is a placeholder that gets replaced with the argument value
supplied by the <messageArg> action, in this case, the date
stored in the scoped attribute named "dateArg".
> Welcome = "welcome"
> Welcome.dateArg = "Monday, January 2nd, 2002"
>
> But, it's not because the '$dateArg' is a scoped variable.
No. Another way of achieving the same result would have been:
<fmt:message key="Welcome">
<fmt:messageArg>
<fmt:formatDate/>
</fmt:messageArg>
</fmt:message>
> So, why bother with the messageArg tag?
There's a good tutorial section on formatting compound messages at
http://java.sun.com/docs/books/tutorial/i18n/format/messageintro.html
Let me know if that still leaves any questions you might have open.
Jan
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