What does EnumSet really mean?

Question

I have the following example:

import java.util.EnumSet;
import java.util.Iterator;

public class SizeSet {

    public static void main(String[] args) {
             


        

Answer 1

EnumSet is specifically used for storing the enum type element and iterating over it quickly. Eg.

for (Day d : EnumSet.range(Day.MONDAY, Day.FRIDAY))
        System.out.println(d);

The above snippet will display the days of the week from Monday through Friday.