Introduction to Java for C$++$ Programmers

JAC $444$

Please read the following guidelines very carefully before

answering any questions:

You will at least define a class with the main method for each question.

You must keep the class name requested in each question.

You must hold the naming conventions requested in this document

and each question.

All deliverables are defined at the end of this document. You must

upload them as requested.

$1.($Class Name: MyInteger, Java File Name: MyInteger.java$)$

Design and write a class named MyInteger. The class contains:

An int data field named value that stores the int value represented

by this object.

You must encapsulate data.

A no$-$arg constructor that creates a default MyInteger object.

A constructor that creates a MyInteger object for the specified int value.

MyInteger $($int newValue$)\{$dots$\}$

A getter method that returns the int value

The methods isEven$()$ and isOdd$()$ that return true if the value in this object is even or odd.

The static methods isEven$($int$)$ and isOdd$($int$),$ which return true if the

specified value is even or odd.

The static methods isEven$($MyInteger$)$ and isOdd$($MyInteger$),$ which return

true if the specified value is even or odd.

The methods equals$($int$)$ and equals$($MyInteger$)$ that return true if the value in this object is equal to the specified value.

In the main method, write a testing program that tests all methods in the class. $[50$ Points$]$

$2.($Class Name: Triangle, Java File Name: Triangle.java$)$

Design and implement a class named Triangle that extends GeometricShape $($See the sample codes for this class$).$ The class contains:

Three double data fields named side$1,$ side$2,$ and side$3$ with default values

$3\mathrm{.}0,4\mathrm{.}0,$ and $5\mathrm{.}0$ denote three sides of a triangle.

You must encapsulate data.

A no$-$arg constructor that creates a default triangle.

A constructor that creates a triangle with the specified side$1,$ side$2,$ and side$3.$

The accessor methods for all three data fields.

A method named getPerimeter$()$ that returns the perimeter of this triangle.

Perimeter: p$=$ side $1+$ side $2+$ side $3$

A method named getArea$($that returns the area of this triangle.

Area: $,$a$=\backslash$sqrt$((($p$)/(2))(($p$)/(2)-$side$1)(($p$)/(2)-$side$2)(($p$)/(2)-$side$3))$

Square Root method in Java: Math.sqrt$()$

A method named toString$()$ that returns a string description for the triangle.

$$ For example, if we have a triangle with the following sides $(3\mathrm{.}0,4\mathrm{.}0,5\mathrm{.}0),$ the toString$()$ method must return:

Triangle: side $1=3\mathrm{.}0,$ side $2=4\mathrm{.}0,$ and side $3=5\mathrm{.}0$

In the main method, write a testing program that prompts the user to enter three sides

of the triangle, a colour, and a Boolean value to indicate whether the triangle is filled.

The program should create a Triangle object with these sides and set the colour and

filled properties using the input. The program should display the area, perimeter,

colour, and true or false to indicate whether it is filled or not. $[50$ Points$]$

Deliverables:

A$)$ Create an up to $15-$minute video $($only ONE video for all the questions$)$

explaining your answers, upload it on YouTube, and submit the link of your

video on Blackboard.

See "How to make a video and upload it on YouTube?" under the "Course

Information" on Blackboard.

Your video must at least contain the following content:

a$.$ Explaining the kev components of your code and how thev work.

b$.$ Showing three different runs and outputs of your code for each

question.

Note: There is no mark if you just read your code. You must explain your code, not read it$.$

Note: Please DO NOT upload the original video file on Blackboard.

B$)$ You must upload all requested Java files $($i$.$e$."*.$java"$)$ as they are.