7. Exceptions and assertions

Review the presentation Exceptions and safeguards

Tasks

1. Explore the jtm.activity07 package
2. Create the class SimpleCalcException as a subclass of Exception.
3. Implement the following constructors for this class:
   1. SimpleCalcException(String string)
   2. SimpleCalcException(String string, Throwable cause)

4. Implement basic arithmetic operations for the SimpleCalc class with int numbers in the range [-10..+10] (inclusive) to pass unit tests

 Notes

1. The input range is checked using safeguards. Therefore, if they are disabled, any int value can be input
2. The output is always checked and an exception is thrown if the value is outside the allowed range
3. Only SimpleCalcExceptions can be thrown. AssertionErrors etc. must be caught and wrapped in SimpleCalcExceptions

Additional information

• De Morgan's Laws