12.6. Checked vs Unchecked Exceptions

Try these first

1. 1.

   Define checked exceptions and give an example.

   Hint

   Think about exceptions that are related to file operations.

2. 2.

   What are unchecked exceptions?

   Hint

   Consider exceptions that occur during program execution.

3. 3.

   What type of exceptions must be handled or declared?

   • Checked Exceptions
   • Unchecked Exceptions
   • Both

   Hint

   Recall the definitions of each exception type.

4. 4.

   True or False: Unchecked exceptions do not need to be explicitly caught in the code.

   • True
   • False

   Hint

   Think about the implications of programming errors.

5. 5.

   Create a method that reads from a file and handles any IOException that may arise. What will the method return if an error occurs?

   Hint

   Consider how to gracefully handle the exception.

6. 6.

   Write a code snippet that handles an unchecked exception that may occur when accessing an array using an index. How can you ensure the index is safe to use?

   Hint

   Always check bounds before accessing an array.