An advantage of comparing enums with == is that a null can be compared to a non-null enum without encountering a NullPointerException (NPE). The result of this comparison, obviously, is false.

Because enums are automatically Serializable (see Javadoc API documentation for Enum), there is no need to explicitly add the “implements Serializable” clause following the enum declaration.

Ask Kathleen Use Enums Across Assembly Boundaries Call a combo box across assembly boundaries with generics and enums; add contact information with Assembly Information; and drill down on FxCop ...

Practical .NET Use Constants and Enums to Improve Readability (and Reduce Maintenance) If you're not using Const and Enums then you're just making life harder for the next programmer. By Peter Vogel ...