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I am close to submit - Quetion a bout how to package

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It was mentioned in my Assignment (UrlyBird) that your data access class must be called "Data. Java", must be in a package called "suncertify.db". Any unimplemented exceptions in this interface (DBmain) must all be created as member classes of the suncertify.db package.

-The other classes must be in the same package or must be in a different package? If it is a different package, does this must be suncertify?

-When packaging the classes into a single JAR file (runme.jar), do we have to reflect the packages structure?, for example, Data.class must go under suncertify/db directory?
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The other classes should be under, where xxx should only be db for those classes that are concerned with database access.
I, for example, have the following packages:

And yes, the structure needs to be reflected in the jar file. It won't execute otherwise.
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