java languagePlease use the the language of your choice to complete the followin

java languagePlease use the the language of your choice to complete the following problem:Write a function or procedure that returns a hyphenated string. Valid input will be a string consisting only of alpha characters. Your function or procedure will return an alpha string where the interior letters are joined with a hyphen. For strings containing invalid input (non-alpha characters) please return an empty string ( in most languages).Please write a comment in your code to tell us the programming language you choose to use.Example input:Testou4itExample output:T-e-s-ti-t