January 4, 2017

Java 7 - Implement equals() and hashCode() with java.util.Objects

When using JPA you should implement equals() and hashCode() if you

  • Intend to put instances of persistent classes in a Set.
  • Intend to use reattachment of detached instances.

For JDK 7 and above, you can use the new java.util.Objects class to generate the equals and hash code values.

Test code

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