Tool to find duplicate keys and value in properties file

Question

is there a tool that tells me redundant keys and values that are there in my one or many properties file.

Answer 1

It might be easiest just to write one: For each file, and for each property in that file, put the property key/value pair into a Map, but only after ensuring that the key is not already in the Map. If it is, print out the file name, the key, and the two values.

Answer 2

I don't know if there is an existing tool, but you should be able to write a short java program, or script in a language you are comfortable with that should do this in no time. Then you would also have it for future use.

A quick google search yielded the following http://www.javanb.com/netbeans/1/19793.html

this has a gui tool and a script that will do it.

Answer 3

If you are using an IDE you might find a good tool among their plugins/features.

Eclipse has a ResourceBundle Editor plugin which manages properties files:

http://www.eclipseplugincentral.com/Web_Links-index-req-viewlink-cid-331.html

IntelliJ IDEA 8 and higher is also able to manage properties files and check for duplicate entries.

Answer 4

There is an Ant task, RscBundleCheck, that checks for the existence of duplicate keys in a set of resource files:

http://rscbundlecheck.sourceforge.net/

This would be simple way to integrate checking for duplicate properties into your build process.