Hint: Creating your own Exception

You can create your own class of Exception and throw it. If you were to dig out your notes from long ago, you'd find the following tips:

• Declare a new kind of exception as a class that extends the existing class Exception.
• Give your class a default (no-argument) constructor and one that takes a String argument.
• Make those constructors call super() to use the existing exception machinery.

I've included a file SampleException.java that shows you how all of this can be done.