Can we compare enum with string in Java?
Comparing String to Enum type in Java For comparing String to Enum type you should convert enum to string and then compare them. For that you can use toString() method or name() method. toString()- Returns the name of this enum constant, as contained in the declaration.
Can enum be compared with ==?
There are two ways for making comparison of enum members : equals method uses == operator internally to check if two enum are equal. This means, You can compare Enum using both == and equals method.
Why do you use enums instead of constants in Java?
Enums limit you to the required set of inputs whereas even if you use constant strings you still can use other String not part of your logic. This helps you to not make a mistake, to enter something out of the domain, while entering data and also improves the program readability. Additionally you can always use your enums as a String if you desire.
Can a string be defined in an enum?
If it’s necessary to check, whether some int is defined in enum, one can do something like this: The approved types for an enum are byte, sbyte, short, ushort, int, uint, long, or ulong. So you cannot have an enum of strings. But you can use names from enums, as ToString method returns the name, not the value of the enum.
When to use enums vs Static classes in C #?
Z.. Z.. enums are basically used when you want a variable or parameter to have value from a fixed set of possible constants. You can replace enums with class with a set of static final int constants. But using enums is more flexible & readable appraoch over the later one.
When to check if an int is defined in an enum?
When using const or static fields you definetely need to check whether the passed int value is taken from the expected diapason. If it’s necessary to check, whether some int is defined in enum, one can do something like this: The approved types for an enum are byte, sbyte, short, ushort, int, uint, long, or ulong.