Some more details on the API situation. JAXP is bundled in J2SE and in J2EE. There are rules in the platforms that keep versions of their specs in sync, so that developers know what they are getting. Now, JAXP 1.3 is in J2SE 1.5, JAXP 1.1 is in J2SE 1.4, but there is no JAXP in J2SE 1.3. So the rules say that JAXP 1.3 can be used in J2SE 1.5 (duh!), and in J2SE 1.3 and lesser J2SEs, but not in j2SE 1.4.
The rules exist for a reason, but in this case, we (Sun) recognized that the disadvantages of this would seem to outweight the benefits, so some time ago I requested and received from the J2SE group permision to change the rules for this particular release. This means it is legal for JAXP 1.3 to be used with J2SE 1.4 too.
Moving forward, though, I would not expect the exception to the rule to be continued as the penalty is too heavy. For example, I expect JAXP 1.4 to take want to advantage of features in Tiger and Mustang. That is a different discussion but I didn't want to mislead you.
Hope this helps,
- eduard/o
Elliotte Harold wrote:
Are these APIs and implementation thereof independent of Java 1.5? i.e. can they be compiled and used in a Java 1.2/1.3/1.4 environment? If not, could they be backported to work in such environments?
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