Modify a property file which is a resource in a jar file

Hi All,

I have a property file as a resource in my jar file which I am loading using a class loader. I am then using these properties in my application as and when required. I wanted to know if it is possible to modify the contents of the resource property file from a java program or not.

Thanks in advance.

Thanks
Andy

Hi Andy
I guess in answer to your question it depends...
If you have signed the Jar file then any updates to it will invalidate the signature. But if the Jar file isn't then I guess it would be possible as it is just a zip file, meaning that you can add and remove files to and from the zip file, but this really isn't ideal as there is the possibility that your application may become corrupted.

A better way (and probably less hassle) would be to just save these settings to a user config file the first time the user opens the app, and then read/write to that whenever they make any changes. At least then if this file becomes corrupted they only have to delete that one file rather than re-installing the whole app...

HI James,

Thanks for your answer and sorry for the delay in reply.
My jar file is not signed, well to be more precise it is actually a war file deployed on tomcat and I don't think I can modify the resource which is a property file without redeploying the application. SO I am now using a regular properties file and NOT a property file as a resource.

Thanks for your help.

Thanks
Andy