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.

Every JPA entity has a primary key, but some entities have more than one value as their primary key. In this case, you need to use a composite key. This Java tip introduces you to using composite keys ...