Re: [Switch()...case]From String to enum

From:

Patricia Shanahan <pats@acm.org>

Newsgroups:

comp.lang.java.help

Date:

Mon, 14 Jan 2008 10:08:55 -0800

Message-ID:

<fmg8fo$2vsa$1@ihnp4.ucsd.edu>

Daniel Moyne wrote:

Patricia Shanahan wrote:

Lew wrote:

Patricia Shanahan wrote:

Daniel Moyne wrote:
....

I get the following error message :
No enum const class genj.plugin.sosa.SosaMenuAction$myMenuEnum.Change
indexation to...
So apparently myMenuEnum.valueOf(menuItem) is not the proper variable
to set
in switch () to test against SOSA_SET, SOSA_CHANGE, SOSA_GET or
SOSA_REMOVE.

The exception message is the one you would get if you did
myMenuEnum.valueOf("Change") instead of
myMenuItem.valueOf("SOSA_CHANGE").

For the enum valeOf to work, you need the contents of the string to
*exactly* match the constant name in the enum declaration.

Or do as Sabine Dinis Blochberger suggests and override valueOf().

Or change the enum constants to match the lookup strings.

Patricia

Nope Patricia this nI know how to do but I really want to use SOSA_SET
instead of the string value "Set...." as it brings more readability to the
code ; so I am back to the basic question what can I set in switch () with
myMenuEnum as built and get the possibility to check against SOSA_SET ?

In any case, enum constants matching the lookup strings only works if
the lookup strings match the Java identifier syntax. For something like
"Set....", you will have to provide a lookup method.

Patricia