Practice Throw Keyword (12.10) - Exception Handling

Practise this section

9 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the purpose of the 'throw' keyword in Java?
Show hintHide hint
Think about how you might signal that something has gone wrong in your program.
Question 2.
Write a line of code using the 'throw' keyword to indicate a division by zero error.
Show hintHide hint
Remember the exception type associated with arithmetic operations.
3Question 3.
What does the 'throw' keyword do in Java?
- Creates a new method
- Manually throws an exception
- Handles an exception
Show hintHide hint
It’s about signaling errors.
4Question 4.
True or False: The 'throw' keyword can be used in a method declaration.
- True
- False
Show hintHide hint
Think about where you place the keywords.
Question 5.
Design a simple application that prompts a user for their age and throws a custom exception if the age is less than a defined threshold (e.g., 18).
Show hintHide hint
Think about how you’d communicate age restrictions.
Question 6.
Write a method that calculates the square root of a number and throws an exception if the input number is negative.
Show hintHide hint
What happens with negative numbers in square roots?

5 more questions in this section. Enroll free to practise them all.