title: Apache poi Excel: Creating a formula based on the integer index of the column
body: <p>Say that my column number is 26, when I create a formula my formula should look like, say: SUM(AA1:AA3) for example. but how do I translate 26 to AA? Or say 27 to AB? Is there a way for Apache POI to use Column index as an integer and translate it into its letter representation?</p>