Start with a working Point class. Refer to the Point program created for Lab #$1$:

$2.$ Write a new Rectangle class, a subclass of the Point class.

a$.$ Add width and length variables to the new class.

b$.$ Add constructors

i$.$ a default Rectangle$()$where width $=15,$ length $=15$

ii$.$ a $2$ argument constructor Rectangle$($width$,$ length$)$

iii. use the Super$()$ default constructor for the x$,$ y values

c$.$ Add get $()$ and set $()$ methods as needed to support your new instance variables.

d$.$ Add a method called area that:

i$.$ Calculates the area of a Rectangle object: Area$=$ length $*$ width

ii$.$ returns the Area of a Rectangle object

iii. Do not store the area in a member variable.

e$.$ Override the toString method found in class Point to display $($and label$)$ all of the characteristics

$($instance variables$)$ of a Rectangle object. Do not forget to include the original point instance

variables by using the super.toString$().$

$3.$ Write a new Box class, a subclass of the Rectangle class.

a$.$ Add height as a new variable in this class

b$.$ Add constructors

i$.$ a default Box$()$ where width $=15,$ length $=15,$ height $=15$

ii$.$ a $1$ argument constructor Box$($height$)$

iii. use the Super$()$ default constructor for the x$,$ y$,$ width, height values

c$.$ Add get $()$ and set $()$ methods as needed.

d$.$ Override the area method inherited from the Rectangle class to calculate the outside face area $(6$

sides$)$ of a Box object.

i$.$ Calculates: Area$=$ length $*$ width $*2+$ width $*$ height $*2+$ length $*$ height $*2$

ii$.$ returns the area of a Rectangle object

iii. Do not store the area in a member variable.

e$.$ Add a method called volume that:

i$.$ Calculates the volume of a Box object: Volume $=$ length $*$ width $*$ height.

ii$.$ returns the volume of a Box object

Lab $2-$ Advanced Java

Inheritance

Rev. $1/21/20237$:$02$ PM

iii. Do not store the volume in a member variable.

f$.$ Override the toString method inherited from class Rectangle to display $($and label$)$ all of the

characteristics $($instance variables$)$ of a Box object. Do not forget to include the original point

and rectangle instance variables by using the super.toString$().$

$4.$ Write an executable client class called ShapesTester $$ a separate program $-$ that uses the Point,

Rectangle and Box classes.

a$.$ Print your name, Lab number, and date as the first three lines of output. Hard$-$code the date...do

not use the system date.

b$.$ Create two objects of type Point,

i$.$ point$1=$ Point$()$

ii$.$ point$2=$ Point$(5,19)$

c$.$ Create two objects of type Rectangle

i$.$ rectangle$1=$ Rectangle$()$

ii$.$ rectangle$2=$ Rectangle$(24,30)$

d$.$ Create two objects of type Box.

i$.$ box$1=$ Box$()$

ii$.$ box$2=$ Box$(60)$

e$.$ Execute the area $()$ methods for all objects of type Rectangle and Box. The area should be

printed from the ShapesTester class. Remember the area is being returned to the client.

f$.$ Execute the volume $()$ and area$()$ methods for all objects of type Box. The volume should be

printed from the Shapes class. Remember the volume is being returned to the client.

g$.$ Change the width of box$2$ to $21$

h$.$ Execute the volume $()$ and area$()$ methods for box$2.$ The volume should be printed from the

ShapesTester class. Remember the volume is being returned to the client.

i$.$ Execute the toString $()$ method for all objects.