Can enum be Boolean?
Whereas a boolean appears as true or false as a string, in your enum you can override toString to generate a much more informative value such as app-status-inactive . Such values may be quite useful when logging, tracing, or debugging.
Can enum have multiple values?
Enums can contain multiple constructors. Java enums implicitly extend the java. lang. Enum class.
Can enums have properties?
Since enum class in Kotlin, defines a new type. This class type can have its own properties and functions. The properties can be given a default value, however, if not provided, then each constant should define its own value for the property.
Are enums fast?
Casting from int to an enum is extremely cheap… it’ll be faster than a dictionary lookup. Basically it’s a no-op, just copying the bits into a location with a different notional type. Parsing a string into an enum value will be somewhat slower.
Can enum extend another enum?
All enums implicitly extend java. lang. Enum. Since Java does not support multiple inheritance, an enum cannot extend anything else.
When to use an enum instead of a Boolean?
An enumerator is a data type consisting of a set of named values that can be used in a type-safe way. While it may not look as simple as a boolean, using an enum or other user-defined type helps us avoid setting up complicated if statements with multiple branches.
How to define properties for ENUM items in Java?
In your case it’s very simple: you just need a single field of type string (immutable), so initializing it in the constructor and providing a getter is perfectly ok: Thanks for contributing an answer to Stack Overflow!
Do you need constructors for enum types in Java?
You need a constructor, a field and a getter. Enum types can have constructors, provided that their access level is either private or default (package-private). You can not directly call these constructors, except in the enum declaration itself.
What happens when you define an enum constant without parameters?
Similar to classes, when you define an enum constant without parameters, you actually call the default constructor generated by the compiler. E.g. And just like in classes, if you define an explicit constructor, the compiler will not insert a default constructor, so this will not compile: