Use the following UML diagram to create your java program. Your program should add a test class that outputs the results. Inventory 1 + addItem(): void I I + removeItem(): voidl 1 + updateItem(): voidl + getItem(): Item I I I I I I I - - Item id: int name: String description: String quantity: int price: double + getId(): int I + getName(): String 1 + getDescription(): String | I + getQuantity(): int I I + getPrice(): double
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- Help with JavaFX barchart: I have a program that allows a user to deposit and withdraw money while updating their balance based on the month the transaction occured, but I am having trouble with the programs class and am trying to make a bar chart that will have the total balance of that month, so as an example in May the bar would show $70, while the bar for June would show $100, even if the deposits were $20 and $50, then $30, $40 and $30.DescriptionIn this assignment, you are required to implement an electronic programming quiz system. User can createquestions and preview the quiz.Your TaskYou are asked to write a Java program for the programming quiz system. There are two types of questions:Multiple Choice Question and Ture/False Question. User can create questions using the system; andpreview the quiz, which display all questions in the system one by one. During the preview, the user canattempt the quiz by entering his/her answers to questions. The system will then immediately check theanswer and calculate. After attempting all questions, the total score will be displayed. A sample run of theprogram is shown as below (Green text refers to user input): Please choose (c)reate a question, (p)review or (e)xit >> cEnter the type of question (MC or TF) >> MCEnter the question text >> Each primitive type in Java has a correspondingclass contained in the java.lang package. These classes are called…Starting Out with Java From Control Structures through Objects 6th Edition 4. Paint Job Estimator A painting company has determined that for every 115 square feet of wall space, one gallonof paint and eight hours of labor will be required. The company charges $18.00 per hourfor labor. Write a program that allows the user to enter the number of rooms to be paintedand the price of the paint per gallon. It should also ask for the square feet of wall space ineach room. The program should have methods that return the following data: • The number of gallons of paint required• The hours of labor required• The cost of the paint• The labor charges• The total cost of the paint jobThen it should display the data on the screen.
- Instructor note: This lab is part of the assignment for this chapter. This lab uses two Java files, LabProgram.java and SimpleCar.java. The SimpleCar class has been developed and provided to you already. You don't need to change anything in that class. Your job is to use the SimpleCar class to complete the specified tasks in the main() method of LabProgram.java Given two integers that represent the miles to drive forward and the miles to drive in reverse as user inputs, create a SimpleCar object that performs the following operations: Drives input number of miles forward Drives input number of miles in reverse Honks the horn Reports car status The SimpleCar class is found in the file SimpleCar.java. Ex: If the input is: 100 4 the output is: beep beep Car has driven: 96 milesProblem: Bugs are simple creatures that only know how to walk towards other bugs. Bugs maintain information about their (x, y) position; by which it can tell if they are standing next to other bugs. Watch the following video: bug movement. Create a java project that simulate bugs movement. You need to write a class “Bug" that models a bug moving along a straight line and it can turn to change its direction counterclockwise (i.e. 90 degree to the left; north → west → south → east → north). In each move, its position changes by one unit in the current direction. Details of the "Bug" class is described below. Your simulator should read information of an unknown number of “Bug" objects from an input file called “Bugs.txt". Each line represents a bug and the initial position and facing direction of this particular bug. Keeping the first bug position as a reference the simulator should move the second bug next to the first bug forming a cluster and its final position and direction should be…Java: A place to buy candy is from a candy machine. A new candy machine is bought for the gym, but it is not working properly. The candy machine has four dispensers to hold and release items sold by the candy machine and a cash register. The machine sells four products — candies, chips, gum, and cookies—each of which is stored in a separate dispenser. You have been asked to write a program for this candy machine so that it can be put into operation. NOTE: Each method should be in a different class , NOT one big program! The program should do the following: Show the customer the different products sold by the candy machine Let the customer make the selection Show the customer the cost of the item selected Accept money from the customer Return change Release the item, that is, make the sale
- Java: A place to buy candy is from a candy machine. A new candy machine is bought for the gym, but it is not working properly. The candy machine has four dispensers to hold and release items sold by the candy machine and a cash register. The machine sells four products — candies, chips, gum, and cookies—each of which is stored in a separate dispenser. You have been asked to write a program for this candy machine so that it can be put into operation. The program should do the following: Show the customer the different products sold by the candy machine Let the customer make the selection Show the customer the cost of the item selected Accept money from the customer Return change Release the item, that is, make the sale Here is my provided code: import java.util.*; public class CandyMachine{// Each candy machine is made of 1 CashRegister and 4 DispensersCashRegister cashRegister;Dispenser candy;Dispenser chips;Dispenser gum;Dispenser cookies;//Default constructor to set the…You want to create a program to enroll in classes. You've narrowed the class list down to just a few classes that computer science students might need. In your program, first the user will select a department and the program will tell them what classes are available from that department. Then the user picks a class, and the program will tell them what sections are available. After the user picks a section, the program will print a success message. The departments, classes and sections are as follows: Sample run: Select a department: (1)Computer Science (2)Math (3)Science 1 Select a class: (1)Starting Computing (2)Data Structures (3)Algorithms 3 Select a section: (1)Section 102 (2)Section 202 1 You've been enrolled in Section 102 of Algorithms! The user should input an integer in the range of the choices you give them. For example, a user cannot input 3 if you only present 2 choices.Ensure you are doing input validation. Your program should output Please enter a valid input. if the…JAVA Programming: After Elon Musk decided to make a new business idea. He found a social network called "Friends.com". It has currently N registered users. Likewise in any social network many users can be friends. Elon Musk wants the world to be as super connected as possible, so he has this new way to suggest friendship to some pairs of users. He suggests user u to have a friendship with user v if they are not friends yet and there is a user w who is friends of both of them. Note that u, v and w are different users. Elon Musk is too busy with SpaceX these days, so he hired you to develop a JAVA program to count out how many friendship suggestions he has to send over his social network "Friends.com". Sample Input: 3 0111 1000 1000 Sample Output: 2
- Java Script There is a single operator in JavaScript, capable of providing the remainder of a division operation. Two numbers are passed as parameters. The first parameter divided by the second parameter will have a remainder, possibly zero. Return that value. Examples remainder(1, 3) → 1 remainder(3, 4) → 3 remainder(-9, 45) → -9 remainder(5, 5) → 0 Notes The tests only use positive and negative integers. Don't forget to return the result.java program that asks the user to enter a number to be tested for repeated digits. For each input number from the user, the program prints a table showing how many times each digit appears in the number. Let’s assume that the appearance of a digit will not be over 1000 times in the input. Make sure your table printout can align well. The program should terminate when the user enters a number that is less than or equal to 0. A sample output is shown in the attachment.Using Java programming language write a program to manage a hotel with 24 rooms;10 rooms are Executive, with price Gh ₵ 2500.00 per night, 7 rooms are Chalets, with amounts Gh ₵ 1500.00 per night7 rooms are Ordinary, with amount Gh ₵ 500.00 per night The program should allow customers to book for rooms for a number of nights, and update the number of empty rooms available for each category when a customer has paid fully and has checked-in; also update the number of empty rooms available when customer checks-out. Customers should make bookings with their first names, telephone number A customer should be prompted to know if a room is booked (meaning a another customer has booked it but has not paid fully, or has not checked-in) A customer should be prompted to know if a room is occupied (meaning a booked room has been fully paid for, or the customer has checked-in) A customer should be prompted to know if a room is available (meaning a room has neither been booked nor checked-in). A…