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    2. Mastering modularity

    This chapter covers

    • Understanding modularity and why it’s desirable

    • Using metadata to describe OSGi bundles (aka modules)

    • Explaining how bundle metadata is used to manage code visibility

    • Illustrating how bundles are used to create an application


    In the previous chapter, we took a whistle-stop tour of the OSGi landscape. We made a number of observations about how standard Java is broken with respect to modularity and gave you examples where OSGi can help. We also introduced you to some OSGi concepts, including the core layers of the OSGi framework: module, life-cycle, and service.


      

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