The point is that you can use your IDE to make the boilerplate easier. I use Eclipse here as an example, but other 'heavy' IDEs should give you the same functionality (perhaps in a slightly different way). Tabby('Tabby'), RussianBlue('Russian Blue') You cannot create objects of an enum class, and it cannot extend other classes. An enum class can have attributes and methods, in addition to constants. enum constants are accessed using dot syntax. enum constants are public, static, and final by default. Then I can create a new enum (say Cats), define the constants, then insert the Template. An Enum keyword can be used with if statement, switch statement, iteration, etc.

The reasons are as follows: Testing equality of an enum value with equals () is perfectly valid because an enum is an Object and every Java developer knows should not be used to compare the content of an Object. This.displayName = public String toString() One of the Sonar rules is Enum values should be compared with ''. I added this Template with the name DisplayableEnum: You could easily turn the boilerplate code which defines the displayName and the toString method into a Code Template and have your IDE generate the internals, leaving you to define the constants.įor example in Eclipse, I can generate Templates using Window -> Show View -> Template then Right-Click in the Template frame and use New. For convenience in coding, rely on your IDE. It seems trying to inherit from a common parent class for displayName purposes leans more towards sacrificing clarity in inheritance for a little bit of convenience. You might consider the difference between coding something for design reasons versus 'ease of use'. But it seems like a lot of work to isolate the displayName For example, the sort parameter in GET /itemssortascdesc. The benefit of aggregation would be the ability to modify the Helper class without modifying the enum class, to switch to different / extend helpers etc. Is it possible to assign a numeric value to an enum in Java - Yes, its possible to assign a numeric value to an enum. You can use the enum keyword to specify possible values of a request parameter or a model property. This.enumInstance = public String toString() This.displayName = instance.name().replaceAll('_', ' ') This.helper = new public String toString() The infrastructure contain enumdef like this: IMBVAIND 4342 VALUE DISPLAY. Return source.name().replaceAll('_', ' ') How to get description of enum values in RFA Java 8.2.1.元. Public static > String toString(final Enum source) But like I said, I think the displayName is well encapsulated inside the Breed itself.Įnum Breeds You might be able to do it using a Utility class or aggregation.

Java enum with values