Tag: enums

Using an Interface as a super type for Enum classes – problem with accessing Enum-specific methods

bounded-types enums generics interface java

I’ve been attempting to implement an interface in my enums in order to have rules for a simulation I’m making. I am trying to access enum-methods such as values() and ordinal() (on objects). However, even with upper-bounding my classes with my interface name, I still cannot access these methods without overriding them in my interface, which won’t work. I’m trying

I tried to set enum field by reflection

enums java kotlin

I have two enums with vararg property and @FieldEnrich annotation. Annotation looks like Annotation is processing by object The logic is as follows. We annotate an enum member with the annotation @FieldEnrich and pass the property we would like to read value from and the name of the field to which we set the value of the property. I was

Duplicate code across enums .. is there an approach to centralize common code in these enums?

enums inheritance java

I have the following 3 enum’s in my project, which are all very similar. Since each enum has at least 2 common fields i.e key and code, is there any way that I can make the common: constructors getters field declarations shared to all of my enums? Without having to declare inside each one. I know no extends clause allowed

How to map multiple enums to string (and back) using their common property with MapStruct?

enums java mapstruct

I have two enums with common property – id: And I need generic MapStruct mapping of such enums (without need to define mapping of every such enum). Answer Yes, it’s possible through @TargetType annotation. You need a common interface for such enums: Then you need to be able to create enum of such interface instance by id: Then the generic

How can i create Enum in Java? [closed]

enums java

Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last year. Improve this question I already created Enum. But i cannot create new Enum. I wanna create and compare 2 Enums actually. The X value is coming from backend. It’s

set class fields based on enum value

enumerate enums java spring spring-boot

Using the above code I can get the value of Tempclass fields based on enum values. Now how to set the fields of Tempclass based on enum value ex: if enum VALUE2 is selected, then i need to set the Tempclass field2 to the input value. Answer Use a BiConsumer<Tempclass, String> taking an instance of TempClass and a String and

How to Create a List of Different Enum Classes

enums java

I’d like to create a list of different Enum classes and be able to access the values of these enums in the list. For instance, consider two Enums: I’d like to construct a list of Enum1 and Enum2 such that I can print the values of Enum1 and Enum2. It would look something like this, but this obviously doesn’t compile:

Serialize Enum as String for validation using Jackson

enums jackson java spring-boot validation

I’m trying to validate an Enum using the custom validator, in my custom validator I’m trying to return a custom message when a parameter does not exist in the enum values. Bellow my enum Bellow my PostMapping method I can’t switch the type of enum to string in the method itself because I’m using swagger which displays a nice selection

Utilizing switch statements with enums and marker interface

enums java switch-statement

I’ve got a marker interface and two enums which implement the Marker What I’m trying to do is utilize a switch statement, such as Is there a way to do this without using an expensive instanceof call? Something like this would work, but I’m trying to avoid using instanceof, and frankly it looks kind of ugly. Answer Looks like a