A modem converts digital data into an analog signal so that the data can be transmitted over a phone line

Define an exception class called DimensionException to use in the driver program from Programming Project 4 in Chapter 8. Modify that driver program to throw and catch a DimensionException if the user enters something less than or equal to zero for a dimension.

This project is fairly simple. The DimensionException class is written to accept a String and an integer so the message can be more helpful (it can display which dimension is invalid and its value). The MoreGraphicsDemo program from Chapter 8 Programming Project 4 is modified to create the version using DimensionException and to be interactive so the exception code can be exercised.

When you perform a search, you submit words or phrases, known as ____________________, that best describe what you want to retrieve to the search engine.

Fill in the blank(s) with the appropriate word(s).