Consider the following UML diagram.Suppose that each of these classes has agetMass () method that returns the mass of thecurrent object (double); that the Star class has agetPlanets () method that returns an array ofPlanet objects (the planets that orbit this planet);and that the Planet class has a getMoons () methodthat returns an array of Moon objects (the moons ifthis planet). All attributes of these classes areprivate. All methods described above are public.Star0..PlanetCreate a class called SolarMass that has a singleclass method in it called solarMass (StartheStar) that returns the total mass of the inputstar (along with the mass of all of that star's planetsand their moons). The method returns a double.Any program should be able to call this method.e..*Moon

Approach: The solarMass function will have a variable mass which will be initially set to the mass…

Answered: Suppose that each of these classes has…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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JAVA QUESTION REQUIRES SEPARATE CLASSES, CANNOT BE WRITTEN IN ONE MAIN METHOD E.G. ACCOUNT SECTION WRITTEN IN ACCOUNT CLASS, CUSTOMER SECTION WRITTEN IN CUSTOMER CLASS ETC. Phase 2 In this phase you’ll be writing code within the methods of your classes to make the tests pass. Account Each account should have a constant, unique id. Id numbers should start from 1000 and increment by 5. The ACCOUNT_ID attribute should be initialised when the account object is created. The id should be generated internally within the class, it should not be passed in as an argument. The deposit method should increase the balance by the value passed in as an argument. The withdraw method should reduce the balance by the value passed in as an argument. It should return the value of the argument The account should be able to go overdrawn The correctBalance method should change the balance to match the value passed in as an argument. Testing your code for Account Run TestAccountInitialisation to check…
In this question, we will bake a class. Create a class Cake , with the following instance attributes: • name (a string) • ingreds (a list of strings) • price (a float) The Cake class has also the following methods: • Write a constructor that takes as input a string indicating the cake name, and a list of strings indicating the cake ingredients. (No docstring needed.) The constructor uses these values to initialize the attributes accordingly. Note that each cake should be assigned a random price between $10.00 (inclusive) and $15.00 (exclusive). You may import random . Moreover, a cake must contain at least three or more ingredients. If this is not the case, the constructor should raise a ValueError . For this constructor, do not worry about making a copy of the input array. You can simply copy the reference received as input into the corresponding attribute. 1 • Write a method (including docstring) called __str__ which returns a string containing the name of the cake and its price…
For this exercise, you will be completing the Account class, which simulates a regular bank account, then using overrides and calls to the superclass to create a StudentAccount. Student accounts differ from regular accounts in that they get a bonus $1 for every deposit, but a $2 fee for every withdrawal. You will override the methods in the StudentAccount by calling the superclass methods with the additonal amount or fee incorporated since the balance is not directly stored in the StudentAccount object. You will also update the toString, as outlined in the comments. When completed, create one student account and one regular account for testing. Deposit and withdraw money and print the results. import java.text.*;public class BankTester{public static void main(String[] args){Account a = new Account("Imran", 1100);a.deposit(200.00);System.out.println(acc1.toString());a.withdraw(100.00); }} public class StudentAccount extends Account{// Complete this class with Override methods.…
Choose necessary patters, draw the UML and code just company class methods on paper. A car company makes a car produce application. There are diffrerent types of models that the company builds as sedan and sport. Each model has some shared and distinguishing features. The object creation process should conduct by a central class. The second central class should not be created in the application.
Write a class that tests and demonstrates that your Candidate and Electionclasses implement the specification given above. Note that this does not need to be a Junit test class.Your test class must illustrate all of the features that you have implemented. This will best be done by having at least one separate test method for each feature. For instance:• A method that creates a Candidate object and prints out the result of calling each of its accessor (get) methods; • A method that adds a vote to an existing Candidate object.• A method that creates an Election object, creates a few Candidateobjects and adds them to it, and then calls the printAll method;• A method that finds a matching Candidate;• A method that does not find a matching Candidate;• etc.Note that the list above is not a complete list of the test class’s methods and you will need to define more than those for this part. It will be worth writing this test class alongside writing the other classes. For instance, develop the…
Assume we have a Book class that includes authorInit and pubYear attributes of type Stringand int, respectively, both set by the constructor. Write a compareTo method for this class, so thatbook objects are ordered based on the author’s initials first and then (if needed) the publication year. DO NOT assume the length of String type authorInit to be 2.
Write a class 'Cylinder' that has two fields: height and radius. The class should have only one parameterized constructor function to initialize these fields. The class should also have a method 'getVolume()' to calculate the volume of this cylinder. Now, create any 2 objects of this class with arbitrary values and show their volumes.

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