package com.packt.cookbook.ch15_new_way.c_enum; import com.packt.cookbook.ch15_new_way.c_enum.api.Car; import com.packt.cookbook.ch15_new_way.c_enum.api.SpeedModel; import ...

Although it is part of the java.util.concurrent package, the TimeUnit enum is useful in many contexts outside of concurrency .

JPA and Hibernate enum mapping The Java enum, introduced in Java 5, will map to the underlying database without any intervention. The JPA framework, be it Hibernate or Toplink or DataNucleus, will ...

I've verified that when using standard Java types (like String) as Map keys with the same configuration, it works correctly. The issue seems specific to using custom enum types as Map keys in XLANG ...