Objectives

This project will allow you to practice Java's expressions, input$/$output$,$ and conditionals. In addition,

you will learn how to use course tools.

Overview

You need to implement three programs: Area, Divisible, and ColorGenerator.

Specifications

For this project you are expected to use good variable names and good indentation.

Area Program $-$ Write a program that will compute the area of a rectangle. The program will

call a method to read the length and width values and return the area. You need to call

another method to validate the length and width and make sure they are positive. Continue

asking the user until both length and width are valid.The following is an example of running

the program. The example illustrates the messages used to read data and to display the

area.

Enter length: $-3$

Invalid length. Make sure to enter a positive number.

Enter length: $7$

Enter width: $5$

Area is: $35$

ColorGenerator Program $-$ Write a program that computes a CSS color. We define a CSS

color as a string that starts with a # character and it is followed by three pairs of $2$ characters.

The possible pairs of two characters will be $00$ or FF$.$ A color is defined by two characters for

red, two characters for green, and two characters for blue. For example, #FF$0000$ is just red,

whereas #$00$FFFF is the combination of green and blue. Your program will ask users

whether they want to have red as part of the CSS color. If the user answers "Yes", FF will be

used for the red component; otherwise $00$ will be used. The program will then ask the user

whether they want both green and blue in the CSS color. If the user answers "Yes", FFFF will

be used for green and blue; otherwise $0000$ will be used. As you can see not all possible

color choices can be generated $($e$.$g$.,$ #FF$00$FF$).$ The following are examples of running the

program. The examples illustrate the messages to use when reading data and displaying the

result. Notice that in addition to use "Yes", users can use "Yeah" to accept a choice. Any

other value entered is considered a $"$No$"$ answer.

Do you want red? $($Yes$/$Yeah$/$No$)$: Yes

Do you want green and blue? $($Yes$/$Yeah$/$No$)$: No

Project #$1,$ Java Basics$/$Conditionals

$2$

Final Color: #FF$0000$

Do you want red? $($Yes$/$Yeah$/$No$)$: No

Do you want green and blue? $($Yes$/$Yeah$/$No$)$: Yes

Final Color: #$00$FFFF

Divisible Program $-$ Write a program that reads two integer values x and y$,$ computes the

remainder, and determines whether x is divisible by y$.$ Call a method that takes y as a

parameter and validates that y is not equal to zero; the method should return true or false.

The following are examples of running the program. The examples illustrate the messages to

use to read data and the messages to display when x is divisible by y$,$ and when it is not

divisible by y$.$

Enter x: $8$

Enter y: $0$

Value of y can$$t be $0.$

Enter y: $3$

Remainder: $2$

$8$ is NOT divisible by $3$

Enter x: $8$

Enter y: $4$

Remainder: $0$

$8$ is divisible by $4$

Submission

$$ Submit three $.$java files $($one for each program$).$

$$ Submit three Word$/$PDF documents; one for each program. Each document should have a

test table with test case #$,$ input, expected output, actual output, and pass$/$fail columns. You

need to have at least three test cases for each program. If the program validates input, you

need to have at least one test case with invalid input. You need to provide a screenshot for

every test case.

Other