Purpose: To be able to • Do CRUD operations against object arrays of different types. • Sort with the comparator class • Achieve this overall goal from the course syllabus: "After completing this, you should be able to create a Java application with a user interface in which the user can add to, delete, modify, search and list data.

 

This is created with java.

It is important that the user receives a response as to what happened after each button press, so certain the result of these in a text area.

4. Make a GUI program, see example below, with JFrame and suitable Swing components where you can:

a. Add a CD discs to an array of CD objects.

b. Change information about CD based on CD ID

c. Remove CD based on CD ID

d. Search by music genre and list all CDs for the searched genre.

e. Search for the artist and list all CDs for the searched artist.

i. Talk about how many records this particular artist has made

f. List data about all CDs in the array of CD objects

g. A sort button that sorts by artist name. And one on production year. Use Arrays.sort and a Comparator class.

JAVA Coding Needed

6-Your program MUST be very modular

7-Your output MUST friendly (using labels for all info accordingly) and do display all input and calculated fields.

8-You must implement JOptionPane for all your input and output and must validate all input for all prompts.

Problem’s specifications:

 The GPMS (Green Pollution Monitoring Service ) a fictitious orgaism is tasking you with the coding of an application that monitors the pollution levels of different sites in the USA.

All data are to be stored in an array of 100 object of type ‘Site’

Code a class ‘Site’ with the following attributes and methods:

-the ID of a given site.

-The name of a given site

-the pollution numeric value: adopt data and attributes from the following site

-Index value (see below under option 2 in the menu)

What to do?

-In the main class, declarae an array of 100 object of type ‘Site’

-In the main class, code the following menu in a separate function:

MENU

---------

-1-Add a site

-2-Display a site

-3-Quit

-If user select 1 from the MENU, constract an object site, and call a method in the class ‘Site’ that input data for a given site.

-If user select 2 from the MENU, call a function that search for a site in the array of objects of type ‘Site’  by ID and if found call a function that determines the index value (1 for good, 2 for moderate, 3 for unhealthy for sensitive groups, 4 for unhealthy, 5 for very unhealthy, 6 for hazardous)  based on the pollution numerical value as represented in the given site.

-Call a function member of the class Site, that displays a report about this site (ID, Name, Pollution Value, Index Statement based on the index numerical value)

-Code a function/routine that after the user complete the input of all available sites, displays the site info. that is the most polluted. Also, display how many sites were input for this study.

What to submit?

Submit your complete .Java code named HW3_lastname.java

Extra credits:

-Use ArrayList instead of array of objects

His assignment is the next step to enhance your Programming Project 1 and Homework 3 works. As for 
now, you can keep the inventory in a file and upload it to the array available for your program. You have 
three classes for each type of products. It is time to think about how to improve the data model – all 
three types have enough in common to be child classes of one parent class.
Thus, the first thing to do is create a superclass and make three product type classes subclasses. Then, 
move as many members (fields and methods) from Type X, Y, and Z product classes to a superclass as 
possible. Change the constructors appropriately. 
The advantage of inheritance is the ability to create an array of superclass objects to be filled with 
objects of different subclasses. Thus, your inventory is in one array. Use the product’s index in the array 
to build the product’s ID (I would recommend starting with 1). In the superclass, create a static variable 
that holds the number of products available in the inventory. It must grow as reading from the file 
progresses.
Override a default toString() method for a superclass such that it shows product ID, name, regular 
price, and type.
At this moment, make sure that all modifications you have made keep your application alive and 
working.
The next step is to add three new classes to the project: 
• Create a class to represent the user – hardware store customer. You must decide what members 
this class needs. Ask the user to input necessary information.
• You may notice that the date of the year is a complicated piece of data. Create a class Date that 
converts a string of the form of “mm/dd/yyyy” into an object with three fields – month, day, and 
year. The class constructor may do this job, but do not forget to check the string for correctness.
Once you have this class ready, input the date as a string with the following converting into an 
object of type Date. Remember, if you read a string from the keyboard after a number, you 
may need to handle the new line symbol left in the input buffer.
• The result of your application is an order that must have the customer’s information, the date, 
the product information, and the total amount to pay. Thus, the third class to add is the class 
Order. When all the information is collected, the order is ready to be created and printed out. 
Outputting the order is the primary behavior of an object of type Order, and it is the final step 
of your application. Thus, class Order aggregates the customer’s info, date, product info, and 
total. Please note that Type X and Type Y products need only regular price and amount to 
calculate the total, while Type Z products must also consider the date.
The input and output examples for Types Y and Z are
User: Vladimir Kuperman
The inventory:
1 Light Bulb 60W 3.0 Type X
2 Light Bulb 100W 5.99 Type X
3 Steel Bolt M5 0.15 Type Y
4 Steel Bolt M8 0.25 Type Y
5 Hose 25 feet 10.0 Type Z
6 Hose 50 feet 15.0 Type Z
Your choice: 3
Number of units: 1000
What is the purchasing date? (mm/dd/yyyy)
12/12/2021
*********************************
Date 12/12/2021
*********************************
Vladimir Kuperman
Your item: 
+----+--------------+------+----+
|ID | Name |Price |Type|
+----+--------------+------+----+
|3 Steel Bolt M5 0.15 Y |
+----+--------------+------+----+
in the amount of 1000
*If you buy more than 1500 units you would pay $0.14 per unit.
*********************************
Your total: 127 dollars 50 cents
Save to file? (Y/N) Y
User: Vladimir Kuperman
The inventory:
1 Light Bulb 60W 3.0 Type X
2 Light Bulb 100W 5.99 Type X
3 Steel Bolt M5 0.15 Type Y
4 Steel Bolt M8 0.25 Type Y
5 Hose 25 feet 10.0 Type Z
6 Hose 50 feet 15.0 Type Z
Your choice: 5
Number of units: 10
What is the purchasing date? (mm/dd/yyyy)
10/12/2021
*********************************
Date 10/12/2021
*********************************
Vladimir Kuperman
Your item: 
+----+--------------+------+----+
|ID | Name |Price |Type|
+----+--------------+------+----+
|5 Hose 25 feet 10.0 Z |
+----+--------------+------+----+
in the amount of 10
*********************************
Your total: 70 dollars 0 cents
Save to file? (Y/N) Y
Program requirements
The program must have one superclass and three subclasses for three types of products according to 
the description given in Programming Project 1. 
The program must read the inventory from the file into one array for all three types of products. Each 
element of the array must be an object of one of the subclasses according to the information in the file. 
Product ID must be formed automatically using a static variable.
The user must be registered in the system, and the corresponding object must be created. Then, the
user chooses a product from the list, specifies an amount and the date of planned purchasing.
The date, user, product, amount, and the total must be aggregated in an object of type Order and 
outputted.
For this assignment, it is sufficient to output the order to the console. However, additional saving the 
order in the file will be considered as a plus.
The test plan must be developed for the program. Consider and test different inputs that may cause 
errors: incorrect file records, wrong date format, invalid user’s choice.
You have four weeks and three submission attempts for this assignment. Here is the suggested scenario 
on how to plan your work:

You have been contracted by a popular fitness club to create a Java Program that
will help in the input, calculation, display of calories burnt and pounds lost during a week of
workout for members of the club.
The program will also base on the amount of weight lost update the weight of the user and
calculate and display the users BMI – body mass index using any researched method. See an
example here- http://www.whathealth.com/bmi/formula.html
The club takes part in 5 major types of activities, namely walking, running, swimming, hiking,
and bicycling.
The program is to prompt for the Name of the member, gender, weight in pounds, height and
the time spend on each activity during the week in minutes.
The program will then calculate the calories burnt per activity, the total calorie burnt for the
week and the amount of weight lost during the week.
The amount of weight loss will be used to update the weight that was stored in the array and
calculate the person BMI . http://www.whathealth.com/bmi/formula.html
Activity Calorie Burnt Per pound per minute for
men (women are 1/6 less)
Walking .036
Running .095
Swimming .058
Hiking .058
Bicycling .044
 Calories burned per pound per minute (Bicycling – .044) x (times) your exact weight
(140 pounds) = (equals) total calories burned per minute (6.16 calories burned per
minute) x(times)minutes of activity (30 minutes) = (equals) 184.80 total calories
burned per activity.
 Women burn 1/6 less calories than Men.
 3500 calories = 1 pound of weight loss. 
Author: Dexter Chin-Yan
Write a program that would do the following:
 Print a suitable heading and prompt for the required information
 Calculate the necessary required information and store in an Array(s)
o After members names, gender, weight in pounds and time spent in each
activity has been entered (10 Members) The program should calculate the
total calories burnt Total Calorie Burnt for the week and the amount of
weight loss (depending on whether it is a man or a woman.
o Calculate and display BMI and weight status based on the table above.
General Guidelines:
 Make use of appropriate messages to make you program as informative and user
friendly as possible, without being unnecessarily complex.
 Keep user interactions simple and instructions clear
 Use adequate documentation and proper indentation to clarify your program code
where necessary and improve layout
 Pay attention to good structure and use of programming constructs.
Evaluation
 Documentation and layout (spacing, indentation and commenting) 10 marks
 Proper layout of interface for input, output of information 10 marks
 Use of method to calculate, BMI, calories burnt per activity, and weight loss.
 20 marks
 Creation and use of arrays to hold and processed information 20 marks
 Working program (Correctness, efficiency, user interaction)