[brailleblaster] Re: Localizing with PropertyResourceBundle
- From: Michael Whapples <mwhapples@xxxxxxx>
- To: brailleblaster@xxxxxxxxxxxxx
- Date: Sat, 4 Dec 2010 18:07:40 +0000
Have you set up the manifest file for the jar file? The manifest file contains
a definition for the Main-Class which is the class which should be started by
default.
Ant has ways of defining the manifest of a jar file but I am not familiar with
ant enough to give you the precise XML, I am sure the documentation of ant will
say this.
Michael Whapples
On 4 Dec 2010, at 17:33, John J. Boyer wrote:
> Thanks. I'll be looking these things over in the next day or two.
>
> Now here's a dumb question. Ant produces a jar file for the
> BrailleBlaster code that I have, which includes a class with a main
> method. However, when I type
>
> java -jar brailleblaster.jar
>
> I get the message "could not load Class-Main." What could cause this?
>
> Thanks,
> John
>
> On Sat, Dec 04, 2010 at 04:19:47PM +0000, Michael Whapples wrote:
>> Hello,
>> Here is the answer to how to get it loaded, it also supports falling
>> back to more and more general forms should a suitable locale not be
>> supported. NOTE: This is a great example of polymorphism as the same
>> call will also load a suitable ResourceBundle class should you have one
>> for the locale, but if no suitable class is present then a properties
>> file is looked for and used if found and the rest of the application
>> need not know how the resource bundle was got.
>>
>> In short you want to look at the JDK documentation for
>> ResourceBundle.getBundle calls (there are a few options). You would do
>> best to read that documentation as to the order of how things are
>> chosen, its more lengthy than I want to type out. The two main ones of
>> interest I think are:
>> public static ResourceBundle getBundle(String baseName)
>> public static ResourceBundle getBundle(String baseName, Locale locale)
>>
>> You probably only want to use the ones with ClassLoaders if you want it
>> to be loaded from another location than the main BrailleBlaster jar file.
>>
>> Michael Whapples
>> On 04/12/10 02:47, John J. Boyer wrote:
>>> The tutorial does not discuss PropertyResourceBundle. I'm having a bit
>>> of trouble understanding the source code. You are supposed to call the
>>> constructor with a Reader type, but Readir is an abstract class, and the
>>> user is supposed to implement certain methods. How can this be? How do I
>>> tell propertyResourceBundle to read a file?
>>>
>>> Do the names of the properties files have to conform to a certain
>>> format, like blastlocale_en_GB.properties
>>>
>>> How are characters outside the usual "printable" range represented? For
>>> example how would a Hebrew letter be represented in the value of a key?
>>> How are different encodings handled?
>>>
>>> I want to encapsulate all the localization code within one package, so
>>> the locale can be specified in a setup routine and when we want to
>>> assign a string to a label or mesage we can just call a simple method
>>> with the key. I know from experience that unless one gets in the habit
>>> of using such a technique in the beginning it is very difficult to apply
>>> it later.
>>>
>>> John
>>>
>>
>
> --
> John J. Boyer; President, Chief Software Developer
> Abilitiessoft, Inc.
> http://www.abilitiessoft.com
> Madison, Wisconsin USA
> Developing software for people with disabilities
>
>
Other related posts:
