Program files for each of the following three programs
InheritanceTest
DayGui
OfficeAreaCalculator
Each Java source file (*.java) must include a corresponding class file (*.class) program as evidence of success.
STEP 1: InheritanceTest
Write a program called InheritanceTest.java to support an inheritance hierarchy for class Point-Square-Cube. Use Point as the superclass of the hierarchy. Specify the instance variables and methods for each class. The private vari…
