Support for JDk1.3+ in J2ME

Hi,
Can somebody tell me if j2ME supports all classes written using JDk1.3 and JDK1.4? I mean if we write some java classes using Jdk1.3 will they run seamlessly on a PDA or mobile device that supports the latest version of J2ME? (By seamlessly i mean that we wont have to introduce any changes in them just because some classes of jdk1.4 are not supported by J2ME...)
Tahir.

I suppose that if you don't use classes that aren't supported by J2ME and are supported by JDK1.3+ you won't have a problem.
Everething Depends on the J2ME technology you are using. For example if you are using Personal Java your classes should be compatible with JDK1.2 or less.
Hope that helps...

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