Enumerations

Enumeration in Java (or enum) is a special type in Java whose fields consist of constants. It is used to impose compile-time safety.

For example, consider the days of the week, they are a set of fixed constants, therefore we can have an enum defined:

public enum DayofWeek { 

 SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY  

} 

Now we can simply check if a variable that stores a day is part of the declared enum. We can also declare enums for non-universal constants, such as:

public enum Jobs { 

  DEVELOPER, TESTER, TEAM LEAD, PROJECT MANAGER 

}

This will enforce the job-type to be the constants declared in the Jobs enum. Here's an example enum holding currencies:

public enum Currency {
    USD, INR, DIRHAM, DINAR, RIYAL, ASD 
}

Exercise 33: Using Enum to Store Directions

We will create an enum and will find values and compare enums.

1. Create a class EnumExample and in the main method. Get and print the enum using the value as enum. Get and print enum using the values...