SECTION 1: Catching Exceptions With Superclasses Back

SECTION 1: Catching Exceptions With Superclasses
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Use inheritance to create an exception superclass called ExceptionA and exception subclasses
ExceptionB and ExceptionC, where ExceptionB inherits from ExceptionA and ExceptionC inherits
from ExceptionB. Write a program to demonstrate how one catch block can catch all three types of
exceptions. That is the catch block for type ExceptionA that catches exceptions of types ExceptionB
and ExceptionC. The idea here is to have you write and understand exception handling and get a
sense of how you might use it in your final project.
SECTION 2: Calculator
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Write a Java program named CalculatorForm.java that will display a form that does simple numeric
calculations. The form should look like this:

The form should successfully do simple integer arithmetic on integer numbers that are input. That is,
the program should work correctly. When the user enters integer input and then presses the
calculate button, the program should display an integer answer in the answer text field. (It’s ok to do
integer arithmetic and truncate decimal values.) When the user clicks the exit button or the windowclosing button, the program should end.
For right now, assume that the user will only enter integer numbers.
If the user does not enter two numbers, or tries to do "division by zero," the program should indicate
that something is invalid

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