Using the built-in enumeration methods: values( ) : enum methods « Data Type « Java Tutorial






  1. Java Tutorial
  2. Data Type
  3. enum methods

All enumerations automatically contain two predefined methods: values( ) and valueOf( ).

  1. public static enum-type[ ] values( )
  2. public static enum-type valueOf(String str)

The values( ) method returns an array that contains a list of the enumeration constants.

The valueOf( ) method returns the enumeration constant whose value corresponds to the string passed in str.

enum Week {
  Monday, Tuesday, Wednesday, Thursday, Friday, Saturaday, Sunday
}

public class MainClass {
  public static void main(String args[]) {
    System.out.println("Here are all Week constants");

    // use values()
    Week allWeek[] = Week.values();
    for (Week aday : allWeek) {
      System.out.println(aday);
    }

  }
}

Here are all Week constants
Monday
Tuesday
Wednesday
Thursday
Friday
Saturaday
Sunday




2.44.enum methods
2.44.1.Obtaining all ordinal values using ordinal()
2.44.2.compareTo() and equals() for enum data type
2.44.3.Using the built-in enumeration methods: values( )
2.44.4.Using valueOf()
2.44.5.Switch statement with enum
2.44.6.Adding Members to an Enumeration Class
2.44.7.Use the built-in enumeration methods.
2.44.8.Use an enum constructor, instance variable, and method.
2.44.9.Demonstrate ordinal(), compareTo(), and equals().