Java Collection Tutorial - Java EnumSet.noneOf(Class <E> elementType)








Syntax

EnumSet.noneOf(Class <E> elementType) has the following syntax.

public static <E extends Enum <E>> EnumSet <E> noneOf(Class <E> elementType)

Example

In the following code shows how to use EnumSet.noneOf(Class <E> elementType) method.

/*from  ww  w.ja  v  a 2 s.  co  m*/


import java.util.EnumSet;
   
enum Numbers {

   ONE, TWO, THREE, FOUR, FIVE
};
public class Main {

   public static void main(String[] args) {

      EnumSet<Numbers>  set1 = EnumSet.allOf(Numbers.class);

      System.out.println("Set1:" + set1);

      // create a second set which is empty
      EnumSet<Numbers>  set2 = EnumSet.noneOf(Numbers.class);

      System.out.println("Set2:" + set2);

   }
}

The code above generates the following result.