setting values in properties file

[imran quazi]

Hi,

I want to know is it possible to set the values in a properties file thru java program?
The scenario is like this: i'm getting 2 or more product id's from xml. Now i've to display a proper message where that 2 product_id will be inserted. The message is already defined in the properties file as a template. Now i've written the properties file like this:

product1 = 1234567
product2 = 8223232
template1 = Product {0} was replaced by {1} due to something.
template2 = Product {0} is blah blah and product {1} will be blah blah.

That product1 & product2 value should come from xml.How can i do this?

Another thing is that,i'm using eclipse and its giving error:

java.util.MissingResourceException: Can't find bundle for base name MessageBundle, locale en_US
at java.util.ResourceBundle.throwMissingResourceException(Unknown Source)

Where i've to keep the properties file? i've tried keeping it at the same place where java files are residing, in a different folder outside the package...but its giving the same error...

please help

[Paul Sturrock]

The Properties class has a store() method to write out to a file. Read your properties file in, manipulate the properties as you need then call store().

Where i've to keep the properties file? i've tried keeping it at the same place where java files are residing, in a different folder outside the package...but its giving the same error...

Basically, in the classpath. It looks like you are using a ResourceBundle; are you loading it via the getBundle() method? The JavaDocs explain the logic behind finding the file.

[Rahul Bhattacharjee]

In case your application is not Locale aware then you can just use file inputstream to read the .properties file to a Properties object and the manipulate that.
[ April 23, 2007: Message edited by: Rahul Bhattacharjee ]