Lecture 19 Objectives

At the end of today's class you should

KNOW:

That the way to handle error or abnormal situations in a Java program is to throw an exception
That when an exception is thrown, other methods are alerted, and are given an opportunity to recover
That Java has an Exception class that defines many different kinds of exceptions
That programmers can define their own kinds of exceptions as subclasses of Exception
The difference between checked and unchecked exceptions
That checked exceptions must be either declared or caught

BE ABLE TO:

Create an exception class
Declare that a method throws an exception
Use a try...catch block to catch exceptions

Sample Exam Question:

In a short paragraph, explain the difference between declaring and catching a checked exception. What is the programmer's responsibility in each case?