Well, you will need to create a separate project for each Android, Blackberry, etc. in the same workspace, then you will need to determine the logical relationship between these projects. Therefore, if project A depends on project B, right-click on project A in the project tree, then Properties > Java Build Path > Projectsadd project B to the list of projects on which project A depends.
This will allow you to work with Project B as if it were a separate project, and you are working on Project A, as if Project B were part of it.
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