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What are enumerated types in Java?

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What are enumerated types in Java?

The enumerated, or enum, data type in Java is used to describe a specific set of values for a variable. They are static or final and type-safe. They can not change or be modified. Enum types are reference type, meaning they act like a class and can have their own constructors and methods.

What are enumerated data types give an example?

An enumerated type is a type whose legal values consist of a fixed set of constants. Common examples include compass directions, which take the values North, South, East and West and days of the week, which take the values Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday.

How do you write enumerated types in Java?

Java Enum in a switch statement

  1. class EnumExample5{
  2. enum Day{ SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY}
  3. public static void main(String args[]){
  4. Day day=Day.MONDAY;
  5. switch(day){
  6. case SUNDAY:
  7. System.out.println(“sunday”);
  8. break;

What is enumerated format?

In computer programming, an enumerated type (also called enumeration, enum, or factor in the R programming language, and a categorical variable in statistics) is a data type consisting of a set of named values called elements, members, enumeral, or enumerators of the type.

Why is enum used?

Enums are used when we know all possible values at compile time, such as choices on a menu, rounding modes, command line flags, etc. It is not necessary that the set of constants in an enum type stay fixed for all time. In Java (from 1.5), enums are represented using enum data type.

What are the types of enum?

An enum type is a special data type that enables for a variable to be a set of predefined constants. The variable must be equal to one of the values that have been predefined for it. Common examples include compass directions (values of NORTH, SOUTH, EAST, and WEST) and the days of the week.

What is the difference between enum and constants in Java?

An enum can, just like a class , have attributes and methods. The only difference is that enum constants are public , static and final (unchangeable – cannot be overridden). An enum cannot be used to create objects, and it cannot extend other classes (but it can implement interfaces).

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