Re: [Switch()]From String to enum

Sabine Dinis Blochberger <no.spam@here.invalid>
Tue, 15 Jan 2008 09:43:42 GMT
Roedy Green wrote:

On Mon, 14 Jan 2008 18:45:36 +0100, Daniel Moyne <>
wrote, quoted or indirectly quoted someone who said :

What you mean by override valueOf() : create a new method of this name in
class myMenuEnum that would provide what I expect ; I will try to work out
this idea.

it is a static, so you can't literally override it. You might as well
give it a slightly different name to make it clear what you are doing
e.g. valueOfAlias( ).

Ah, corrected I am, thanks ;) To appease the Usenet gods, I shall post
an abbreviated example of how I implemented an enum. It also uses
ResourceBundels to get display values in the current locale.

 * Enum class for support types in this application.
 * @author Sabine Dinis Blochberger
public enum SupportTypes {
    COMMERCIAL ("comercial", "ds_commercial"),
    TECHNICAL ("tecnico", "ds_technical"),
    NONE ("nenhum", "ds_none");
    private final String supportName;
    private final String displayName;
    SupportTypes(String supportName, String displayName) {
        this.supportName = supportName;
        this.displayName = displayName;

    public String supportName() { return supportName; }
    public String displayName() {
        return java.util.ResourceBundle.getBundle(

    public String toString() { return supportName; }

    /** Returns the enum corresponding to a name.
     * @param name support type name
     * @return support type enum */
    public static SupportTypes supportTypeOf(final String name) {
        if (name == null || name.isEmpty()) return NONE;
        try {
            if (name.equalsIgnoreCase(COMERCIAL.displayName()) ||
                return COMERCIAL;
            if (name.equalsIgnoreCase(TECNICAL.displayName()) ||
                return TECNICAL;
            if (name.equalsIgnoreCase(NONE.displayName()) ||
                return NONE;

            return valueOf(name); // last try
        } catch (Exception ex) {
            return NONE; // default value

The intersting bit to the OP is the method supportTypeOf().

Sabine Dinis Blochberger


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