You’ll also get started with JPA Query Language (JPQL) and use it to execute a few simple database operations on the example application. The complete source code for the example application can be ...

I have this enumerated value that I need to store. Its essentially a lookup code. However, each of the enumarated values has tacit (if that is the right word) properties based on its values.

Like it or not, data is an integral part of any application, even cool object-oriented ones. Everything stops at the persistence layer, where Java developers traditionally have had to write complex ...

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