COMPARING JAVA ENUM MEMBERS: == OR EQUALS()?

Samuel Fernandes

Total Post:159

Points:1117
Posted by  Samuel Fernandes
Java 
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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 come code that uses the equals operator == instead:

public useEnums2(SomeEnum a)
{
    if(a == SomeEnum.SOME_ENUM_VALUE)
    {
        ...
    }
    ...
}
I've been programming in Java for 5+ years, and I thought I understood difference between the two - but I'm still scratching my head at which one is more correct. Which operator is the one I should be using?
  1. Mayank Tripathi

    Post:397

    Points:3117
    Re: Comparing Java enum members: == or equals()?

    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.

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