Is there a nomenclature standard for enums?

Question

I don’t know much about object naming patterns. I’m creating a enum who lists positions, for example: manager, programmer, attendant...

There is a pattern to name this Enum? EnumCargo, CargoEnum,... ???

Answer 1

Yes, there are various patterns of nomenclature, in my view are still a choice of style. I particularly program more in c# and there is a great guide to standardize that I follow.

https://msdn.microsoft.com/en-us/library/xzf533w0(v=vs.71). aspx

For Java (which I haven’t used in practice for a long time) I usually followed the same recommendations. In the Oracle documentation I found this link:

http://www.oracle.com/technetwork/java/codeconventions-135099.html

However, this link does not directly address the Enums, I did some research and from what I found the justification is that an Enum is also a class and as such follows the same naming patterns.

http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html

In stackoverflow itself (English) there are several topics on this, follow two examples below:

https://stackoverflow.com/questions/3069743/coding-conventions-naming-enums

https://stackoverflow.com/questions/15755955/naming-of-enums-in-java-singular-or-plural

In short, according to this reference, Enums are classes and can follow the same standards that you adopt for them.

Enums are classes and should follow the Conventions for classes. Instances of an Enum are constants and should follow the Conventions for constants.

From this link: https://stackoverflow.com/questions/3069743/coding-conventions-naming-enums

Answer 2

The standard of nomenclature of enums follows the same standard of class nomenclature, for the simple fact of enum be a special kind of class.

Therefore, give your name in a way representative of its meaning, ie to represent the "positions", nothing better than a enum by name "Cargo".

For example:

enum Cargo {
    GERENTE(1), PROGRAMADOR(2), ATENDENTE(3) ;

    private int id;

    Cargo(int id) {
        this.id = id;
    }

    public int getId() {
        return id;
    }
}

class Exemplo {
    public final static int VALOR = 10;
}

public class Teste {

    public static void main(String[] args) {
        System.out.println(Cargo.GERENTE.getId());
        System.out.println(Exemplo.VALOR);
    }
}

Exit:

1
10

In addition to exemplifying a slightly more, shall we say, unusual way of using the enum, that is, with builder and getter, I also try to make it clear that you can choose to create a static constant within a class, to show that its functionality is virtually the same, so note that it is not necessary to explicitly make clear that the enum is a enum, and not an ordinary class.

---

The values of enums, in accordance with the documentation, enum in Java must be written in uppercase, as they are States.

Because they are constants, the Names of an Enum type’s Fields are in uppercase Letters.

Answer 3

Using this as a basis reply soen:

They must be in capital letters because they are constant

 public enum Cargo {
    GERENTE, PROGRAMADOR, DBA, ARQUITETO
}

To documentation does not cite a pattern all examples deal only with the type that will be represented by Enum:

public enum Trabalhador {
    CLT, PJ, ESTAGIARIO
}