How to get missing classes from J2SE to J2ME?

Hello,
I am currently developing a J2ME project. As IDE I use Eclipse with the plugin EclipseME. It works great.
Now I have the following problem: I need some classes which are present in J2ME (e.g. sorting of Strings, date functions). So I downloaded the source code for the JDK. Now I want to compile the missing classes (the ones that are not in the libs coming with the WTK) from JDK source into my project, so I can use these functions which are missing in standard J2ME. Importing the whole JDK tree is problematic, because then all classes will be compiled from source. This will cause errors with the JVM on the target device.
Is there a possibility to import the JDK sources and only let compile the classes that are missing in J2ME libs? What is the best way to do this? Or do I have to add the source of each class (and it's dependencies) i need manually? Can I in this case use the original tree of packages and classes (e.g. java.util.ClassName) or do I have to create and new subtree (project.ClassName) in my project and import from there?
Greetz
schneidexe

Generally, this is not possible. The classes have far to many references to other classes, and there are far to many incompatibilities to make it work.
Best solution is to make your own J2me substitution, or find some j2me api that already does what you want.

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