For string constants its usual to use a class with final String values. But whats the best practice for storing string array. I want to store different categories in a constant array and everytime a category has been selected, I want to know which category it belongs to and process based on that.

Addition : To make it more clear, I have a categories A,B,C,D,E which is a constant array. Whenever a user clicks one of the items(button will have those texts) I should know which item was clicked and do processing on that.

I can define an enum(say cat) and everytime do

if clickedItem == cat.A
 ....
else if clickedItem = cat.B
 ....
else if 
 ....

or even register listeners for each item seperately.

But I wanted to know the best practice for doing handling these kind of problems.