Re: Exception Handling

From:
Novice <novice@example..com>
Newsgroups:
comp.lang.java.programmer
Date:
Sun, 11 Mar 2012 22:36:16 +0000 (UTC)
Message-ID:
<XnsA013BD41A8847jpnasty@94.75.214.39>
Arivald <NOSPAMarivald@interia.pl> wrote in
news:jjiusj$g53$1@news.dialog.net.pl:

W dniu 2012-03-11 18:05, Novice pisze:

Lew<noone@lewscanon.com> wrote
innews:jjh39f$crc$1@news.albasani.net:

 Novice wrote:
 snip

 I have a utility class called LocalizationUtils which basically
 houses convenience methods dealing with i18n/l10n. One of its
 methods is getResources(). It expects two parameters, a String
 representing the "base name" (the leading part of the resource
 file name) and a locale.

 Here's the code for getResources() with all comments and error
 handling (aside from the empty catch block) stripped out:

 ================================================================
 ==== static public ResourceBundle getResources(String baseName,
 Locale locale {
     ResourceBundle locList = null;


 Don't use throwaway initializations, usually.


Why?

If I omit that line and simply use the following in the try block:

ResourceBundle locList = ResourceBundle.getBundle(baseName, locale);

locList isn't visible after the try/catch so that I can return it.


Simplest solution, skip variable at all.

static public ResourceBundle getResources(
     String baseName, Locale locale) {
   try {
     return ResourceBundle.getBundle(baseName, locale);
   } catch (MissingResourceException e) {
     logger.error('missing resource', e);
     return null;
   }
}

or, if you need to do something on variable:

   try {
     ResourceBundle locList = ResourceBundle.getBundle(baseName,
     locale);

     ... do something ...

     return locList;

   } catch (MissingResourceException e) {
     logger.error('missing resource', e);
     return null;
   }

or if you want exception block only for ResourceBundle.getBundle()

   ResourceBundle locList; // no null assignment, simply uninitialized
   try {
     locList = ResourceBundle.getBundle(baseName, locale);
   } catch (MissingResourceException e) {
     logger.error('missing resource', e);
     return null;
   }

   do something with locList ...

   return locList;


Thanks, Arivald. I like your suggestions.

--
Novice

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