Parse with a fallback in Java
Java interview exercise on Exceptions & validation, difficulty 1 of 3. Solve it in the editor beside a worked example, or cold in Interview mode with the example hidden; the tests run the moment you do.
Write parseIntOr(text, fallback) that parses text as an int, ignoring surrounding whitespace, and returns fallback when text is null or not a whole number (Integer.parseInt throws NumberFormatException: catch it).
Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Interview mode hides the example: solve it from memory, without the hint or the solution, and it counts as solved cold. Progress is saved in your browser, and in your account if you sign in.