Write a simple Java class, Square to define a geometric Square shape.

As with any other class, you need to set up:

Instance variables: What are the basic properties or characteristics of a square?

Instance methods: What actions can a square take? For the purposes of this exercise, define a method to compute the area and one to compute the

perimeter of the square. Of course, do not forget the toString() method! which is used to display the results.

A main() method for testing purposes.

Task 2: Write the Main Method to Test Each Shape Class

The Shape class provides the base for the hierarchy of geometric shapes. Create the Circle class. Then add a main method, create some Circle objects, and test the instance methods. Below is some sample output:

java Circle Testing toString():

dot1 = circle of area 28.274 (radius: 3.0)

dot2 = circle of area 105.683 (radius: 5.8)

dot3 = circle of area 0 (radius: 0.0)

Testing area():

dot1 area (expected: 28.27) Got: 28.274333882308138

dot2 area (expected: 105.68) Got: 105.68317686676063

dot3 area (expected: 0.0) Got: 0.0

Testing perimeter():

dot1 perimeter (expected:18.85 ) Got: 18.84955592153876

dot2 perimeter (expected: 36.44) Got: 36.4424747816416

dot3 perimeter (expected: 0.0) Got: 0.0

Write main methods to thoroughly test the Rectangle and the Triangle classes.