EnumTest.java

package enums;

import java.util.Scanner;

enum Size {
    SMALL("S"), MEDIUM("M"), LARGE("L"), EXTRA_LARGE("XL");

    private final String abbreviation;

    Size(String abbreviation) {
        this.abbreviation = abbreviation;
    }

    public String getAbbreviation() {
        return abbreviation;
    }
}

/**
 * This program demonstrates enumerated types.
 *
 * @author Cay Horstmann
 * @version 1.0 2004-05-24
 */
public class EnumTest {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.println("Enter a size: (SMALL, MEDIUM, LARGE, EXTRA_LARGE) ");
        String input = in.next().toUpperCase();
        Size size = Enum.valueOf(Size.class, input);
        System.out.println("size = " + size);
        System.out.println("abbreviation = " + size.getAbbreviation());
        if (size == Size.EXTRA_LARGE)
            System.out.println("Good job--you paid attention to the _.");
    }
}