Comparing Java enum members: == or equals()?

Question

I know that Java enums are compiled to classes with private constructors and a bunch of public static members. When comparing two members of a given enum, I've always used .equals(), e.g.

public useEnums(SomeEnum a) {     if(a.equals(SomeEnum.SOME_ENUM_VALUE))     {         ...     }     ... } 

However, I just came across some code that uses the equals operator == instead of .equals():

public useEnums2(SomeEnum a) {     if(a == SomeEnum.SOME_ENUM_VALUE)     {         ...     }     ... } 

Which operator is the one I should be using?

Answer 1

Both are technically correct. If you look at the source code for .equals(), it simply defers to ==.

I use ==, however, as that will be null safe.