Developed a new string utility feature for the fungover/breeze repository, focusing on enhancing text processing capabilities in Java. Delivered a countVowels method within the Strings utility class, designed to count vowels in a given string while handling case insensitivity. Emphasized reliability by implementing comprehensive unit tests that covered scenarios such as all vowels, no vowels, empty strings, null input, and mixed content. This approach improved the utility’s robustness and reduced the risk of regressions in string manipulation. The work strengthened test coverage and provided a reusable, well-tested component, supporting safer and more efficient development across related modules.