public enum SomeType {

    TYPE_A("A", "Type A Description"),
    TYPE_B("B", "Type B Description"),
    TYPE_C("C", "Type C Description");

    private String key;
    private String label;

    private static Map<String, ReportType> keyMap = new HashMap<String, ReportType>();

    static {
        for(ReportType type : ReportType.values()) {
            keyMap.put(type.getKey(), type);
        }
    }

    private ReportType(String _key, String _label) {
        this.key = _key;
        this.label = _label;

    }

    public String getKey() {
        return this.key;
    }

    public String getLabel() {
        return this.label;
    }

    public static List<ReportType> getValueList() {
        return Arrays.asList(ReportType.values());
    }

    public static ReportType getByKey(String _key) {
        ReportType result = keyMap.get(_key);

        if(result == null) {
            throw new IllegalArgumentException("Invalid key: " + _key);
        }

        return result;
    }
}