Java: Map from any value to Enum

MapEnum.java

import java.util.HashMap;

public class MapEnum {
    public static void main(String[] args) {
        System.out.println(OrdinalEnum.FIRST.getCardinal());
        System.out.println(OrdinalEnum.ofNumber(2).toString());
        System.out.println(OrdinalEnum.ofCardinal("three").toString());
    }

    private static enum OrdinalEnum {
        FIRST(1, "one"),
        SECOND(2, "two"),
        THIRD(3, "three"),
        ;

        private OrdinalEnum(int number, String cardinal) {
            this.number = number;
            this.cardinal = cardinal;
        }

        public static OrdinalEnum ofNumber(int number) {
            return fromNumber.get(number);
        }

        public static OrdinalEnum ofCardinal(String cardinal) {
            return fromCardinal.get(cardinal);
        }

        public final int getNumber()
        {
            return this.number;
        }

        public final String getCardinal()
        {
            return this.cardinal;
        }

        private final int number;
        private final String cardinal;

        private final static HashMap<Integer, OrdinalEnum> fromNumber;
        private final static HashMap<String, OrdinalEnum> fromCardinal;

        static {
            fromNumber = new HashMap<Integer, OrdinalEnum>();
            fromCardinal = new HashMap<String, OrdinalEnum>();
            for (OrdinalEnum enumValue : values()) {
                fromNumber.put(enumValue.getNumber(), enumValue);
                fromCardinal.put(enumValue.getCardinal(), enumValue);
            }
        }
    }
}

one
SECOND
THIRD