Concept explainers
You hear someone make the following comment: “A blueprint is a design for a house. A carpenter can use the blueprint to build the house. If the carpenter wishes, he or she can build several identical houses from the same blueprint.” Think of this as a metaphor for classes and objects. Does the blueprint represent a class, or does it represent an object?
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- These two pictures are my resource and driver classes. Please, help me with the error in my resource class. I want my resource class to have getName, getSalary, getThePercentageThatTheEmployeeWantToRaise, and calculateTheNewSalary methods. For my driver class, I want the driver class to ask the user to input their name, salary, how much they want to raise, and print out their new salary.arrow_forwardWhy do we need encapsulation? What happens if data is not encapsulated within a class? Is there a way to access data which is encapsulated in a class? Give examples to encapsulate data within class and package. There is an online banking system where a user can view his contact info, account summary, add few beneficiaries account details. The bank officer can also view user's contact info, account summary, ATM card charges, bank charges, and other deductions. Create a class Customer and define its attributes and method names with proper access modifiers i.e. public, private or default.arrow_forwardGiven the following class diagram, interfaces and classes that model various kinds of animals. What will be the errors in the main method? For each error, indicate the line number of each incorrect statement and explain in one sentence why it is wrong.arrow_forward
- WAKA, WAKA. Pac-Man was a big hit back in the 80s. One of the things he could do was “teleport” from one side of the screen to the other, and that’s what we’re going to implement here. For this program, you’re going to write a class that only has two attributes: an X and Y location. Imagine the player is on a 10x10 grid. If the player exceeds the bounds of the screen, their location teleports to the other side of the screen (e.g. far-right players go to the far-left). The class should include methods for going up, down, left and right. Finally, you should make a “driver” that brings an instance of this class to life in the middle of the “screen” and enables the player to move up, down, left and right. Implement (source code) this program. C++ Pleasearrow_forwardSolve the written question not the image one Q3 attached in the image with the table 1 if you want to recreate code then you can Question Write code for an Invoice class for a car sale. Printing an object of the Invoice should print thedetails about the seller, the buyer, the dealer, the date of transaction, the car being sold, the purchase and selling price, the commission earned by the dealer, sales tax, and the total price of the car (calculated given the details in Question 3 part 3). A generation of the invoice object should set the isSold variable of the car class to true. You do not need to write code for any other classes Syntax of the Q3 code is given below: import java.util.*; class Car{ //class car String[] name; int reg_number,eng_number, chassis_num,status; String[] city, model, color, date_reg,date_arr,type; float price; float abstract calculate (float price); } class Dealer extends Car{ //inherits from Car String[] deal_name,…arrow_forwardFor this exercise, you are given a Team superclass with a BaseballTeam and FootballTeam subclass. Take a moment to examine these classes and the instance variables and methods in each. In the TeamTester class, you will see three objects declared and instantiated using the Team, FootballTeam, or BaseballTeam classes. For each object, use a print statement to print out any public method that returns information that is available for that particular object, including the toString. For example, the dolphin object is a FootballTeam object. One of the pieces of information that can be printed is the getTies() method, so you will call that method in your TeamTester file: System.out.println(dolphins.getTies()); Do this for all the methods that each of the objects can call. Hint: Remember, for the program to compile and run, Java looks for methods to exist in certain classes. ================================= public class Team { private String name;private String location;private int…arrow_forward
- Prompt We have learned how to use accessor and mutator methods to access private class member data. It is possible to instead make the class members public, which would allow other programs to directly retrieve and modify the class member data without needing to write the accessor and mutator methods. This is usually considered bad practice. Why do you think that is? What do you think the benefits are to writing accessor and mutator methods instead of just leaving the variables public? Below is the definition for a class called Counter. Define a new method for this class called "findDifference". This method should take another Counter object as an argument and return the difference in the counts between the counter being called and the one passed as an argument. The difference should be given as an absolute value (not returned as a negative). See below the class definition for examples of this method being used. public class Counter {private int count;public Counter() {count =…arrow_forwardWhich two characteristics of the constructor set it out visually from the other methods of the class, and what are those characteristics?arrow_forwardIn your own words, describe the relationship between classes and objectsarrow_forward
- Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning