Throwing Exceptions in Java: Explanation & Practice

Problem summary

Throw an IllegalArgumentException if age is negative.

Starter code

public class Main {
    public static void main(String[] args) {
        int age = -5;
        
        // Check age and throw exception if negative
        // Catch and print error message
    }
}

Expected output and test cases

• Throw and catch

  Error: Age cannot be negative

Hints

1. throw new ExceptionType(message)
2. Check condition before throwing
3. Catch in same or calling method

Related Exception Handling exercises

• Practice Multiple Catch Blocks in Java
• Practice Using Finally Block in Java
• Practice Using Throws Clause in Java

Practice all Exception Handling exercises · Run this idea in the Java compiler