Exception handling in java is easy. Here is an exercise, that illustrates how you can loop until the exception is corrected. It uses try/catch in a while loop, prompting an end-user for valid input.
Do the full course: https://pcworkshopslondon.co.uk/java-...
WEEKLY JAVA BOOTCAMP TOPICS AND OTHER DETAILS
Weekly Java lesson topic descriptions
Java Bootcamp Week 1: Java Basics+
Java Bootcamp Week 2: Java OOP+
Java Bootcamp Week 3: Java OOP+
Java Bootcamp Week 4: Data Structures, Arrays, Collections+
Java Bootcamp Week 5: Streams and Lambda+
Java Bootcamp Week 6: Exceptions, Reading, Writing Files, Json+
Java Bootcamp Week 7: API, Dates, File I/O (NIO.2), Localization, String, Math, Random+
Java Bootcamp Week 8: Database Principles and SQL+
Java Bootcamp Week 9: JDBC+
Java Bootcamp Week 10: Java Concurrency and Multithreading.+
Java Bootcamp Week 11: Java Test-Driven Development with JUnit.+
Java Bootcamp Week 12: Java Front-end with JavaFX