Java API to convert Array to CSV
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simple question..Suppose I have an array of int, float , string etc.. , is there any utility API ( commons, guava....? ) that will give me a comma separated string .? 

Like so,
 
    int[] a = {1,2,3,4,5}. 
    magicAPI.getCSV(a) = "1,2,3,4,5";

I could write my own , but wanted to check if anything is already available. :) 