Till now we have focused on numeric arrays. But they are most common. Everybody prepares that for the interview. In order to verify the OOPs concepts, interviewers are now asking about Java string programs instead. Why? Simple – because Java string programs are a bit level high than the simple arrays and it requires you to use different OOPs concepts like Java collections, arrays, String libraries, etc. Additionally, ‘String’ forms one of the important aspect of web applications as well as test data. This article will focus on five such Java String algorithms.