Howdy, Bri. Welcome to JavaRanch!
Do I have to create classes for these?
Yes. Please take a look at your instructions.html file. It says that every exception must be created with 2 constructors and must be created in the suncertify.db package, but please take a look at your instructions.html file to confirm that.
Another thing is, when we take a certification, we agree not to publish real questions (please take a look
here for more details). Even though it is not a question, you posted a part of the assignment that was submitted to you, so I'd kindly like to ask you to avoid that, so we can keep everything ok here.
Another thing, whenever you have a question, please come here and ask it, no matter what it is. We'll always make our best to help you!!!