5. Exceptions

Activity 1: Designing an Exception Class Logging Data

Solution

1. Import the relevant classes needed for this program to work: NoSuchFileException and logging.

   import java.nio.file.NoSuchFileException;
   import java.util.logging.*;

2. Make your own methods for issuing exceptions, start by creating one for the NullPointerException case.

   public static void issuePointerException() throws NullPointerException {
       throw new NullPointerException("Exception: null pointer");
   }

3. You will also need a method for the case the file is not found: NoSuchFileException.

   public static void issueFileException() throws NoSuchFileException {
       throw new NoSuchFileException("Exception: file not found");
   }

4. Back to the Main method, create the logger object that will be reporting the exceptions and their severity level.

   Logger logger = Logger.getAnonymousLogger();

5. Capture the argument passed to the script via the CLI...