The class’s __________ are the statements that define the class’s fields, properties,and methods.a. data agentsb. body statementsc. private definitionsd. member declarations
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
The class’s __________ are the statements that define the class’s fields, properties,
and methods.
a. data agents
b. body statements
c. private definitions
d. member declarations
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- Create an application named CarDemo that declares at least two Car objects and demonstrates how they can be incremented using an overloaded ++ operator. Create a Car class that contains a model and a value for miles per gallon. Include two overloaded constructors. One accepts parameters for the model and miles per gallon; the other accepts a model and sets the miles per gallon to 20. Overload a ++ operator that increases the miles per gallon value by 1. The CarDemo application creates at least one Car using each constructor and displays the Car values both before and after incrementation.Assume that you have created a class named MyClass. The header of the MyClass constructor can be ____________. public MyClass() public MyClass (double d) Either of these can be the constructor header. Neither of these can be the constructor header.Create an application class named LetterDemo that instantiates objects of two classes named Letter and CertifiedLetter and that demonstrates all their methods. The classes are used by a company to keep track of letters they mail to clients. The Letter class includes auto-implemented properties for the name of the recipient and the date mailed. Also, include a ToString() method that overrides the Object classs ToString() method and returns a string that contains the name of the class (using CetType and the Letters data field values. Create a child class named CertifiedLetter that includes an auto-implemented property that holds a tracking number for the letter.
- design a Club class and use it to create an application that simulates asoccer league tournament. You are not limited to the features included in these instructionsDesign the Club class, to be used in your application, containing: A private data member code of type string that holds the three letters club’s abbreviation(ex, FCB, LIV, RAM ...) A private data member name of type string that holds the club’s name (ex, FC Barcelona,Liverpool, Real Madrid …) A private data member round of type integer that holds the number of rounds the club hasplayed so far in the current league. A private data member wins of type integer that holds the number of times the club haswon in the current league. A private data member draws of type integer that holds the number of times the club hasbeen drawn in the current league. A private data member losses of type integer that holds the number of times the club haslost in the current league. A private data member goals of type integer that holds the…design a class named Stock that contains:■■ A string data field named symbol for the stock’s symbol.■■ A string data field named name for the stock’s name.■■ A double data field named previousClosingPrice that stores the stockprice for the previous day.■■ A double data field named currentPrice that stores the stock price for thecurrent time.■■ A constructor that creates a stock with the specified symbol and name.■■ A method named getChangePercent() that returns the percentage changedfrom previousClosingPrice to currentPrice.Draw the UML diagram for the class then implement the class. Write a test programthat creates a Stock object with the stock symbol ORCL, the name OracleCorporation, and the previous closing price of 34.5. Set a new current price to34.35 and display the price-change percentage.Create a class called Car. The Car class has the following fields:● color● model● manufacturer1) Instantiate 3 Car objects and display all their properties2) Modify their respective properties and display thosenew properties
- (The Fan class) Design a class named Fan to represent a fan. The class contains:■ Three constants named SLOW, MEDIUM, and FAST with the values 1, 2, and 3 to denotethe fan speed.■ A private int data field named speed that specifies the speed of the fan (the default isSLOW).■ A private boolean data field named on that specifies whether the fan is on (the default is false) ■ A private double data field named radius thatspecifiesthe radius of the fan (the default is5).■ A string data field named color thatspecifiesthe color of the fan (the default is blue).■ The accessor and mutator methodsfor all four data fields.■ A no-arg constructorthat creates a default fan.■ A method named toString() that returns a string description for the fan. If the fan is on, the method returns the fan speed, color, and radius in one combined string. If the fan is not on, the method returns the fan color and radius along with the string “fan is off” in onecombined string.Draw the UML diagram for the class and…a. Create a class named Pizza. Data fields include a String for toppings (such as “pepperoni”), an integer for diameter in inches (such as 18), and a double for the price (such as P699.00). Include methods to get and set values for each of these fields. Save the class as Pizza.java. b. Create an application named TestPizza that instantiates one Pizza object and demonstrates the use of the Pizza set and get methods. Save this application as TestPizza.java.Design a class named Fan to represent a fan. The class contains:■■ Three constants named SLOW, MEDIUM, and FAST with the values 1, 2, and 3to denote the fan speed.■■ A private int data field named speed that specifies the speed of the fan (thedefault is SLOW).■■ A private boolean data field named on that specifies whether the fan is on (thedefault is false).■■ A private double data field named radius that specifies the radius of the fan(the default is 5).■■ A string data field named color that specifies the color of the fan (the defaultis blue).■■ The accessor and mutator methods for all four data fields.■■ A no-arg constructor that creates a default fan.■■ A method named toString() that returns a string description for the fan. Ifthe fan is on, the method returns the fan speed, color, and radius in one combinedstring. If the fan is not on, the method returns the fan color and radiusalong with the string “fan is off” in one combined string.Draw the UML diagram for the class then…
- Design a class named Account that contains:■■ A private int data field named id for the account (default 0).■■ A private double data field named balance for the account (default 0). ■■ A private double data field named annualInterestRate that stores the currentinterest rate (default 0). Assume that all accounts have the same interest rate.■■ A private Date data field named dateCreated that stores the date when theaccount was created.■■ A no-arg constructor that creates a default account.■■ A constructor that creates an account with the specified id and initial balance.■■ The accessor and mutator methods for id, balance, and annualInterestRate.■■ The accessor method for dateCreated.■■ A method named getMonthlyInterestRate() that returns the monthlyinterest rate.■■ A method named getMonthlyInterest() that returns the monthly interest.■■ A method named withdraw that withdraws a specified amount from theaccount.■■ A method named deposit that deposits a specified amount to the account.Draw…Create a class named Person that holds the following fields: two String objectsfor the person’s first and last name and a LocalDate object for the person’sbirthdate. Create a class named Couple that contains two Person objects. Create aclass named Wedding for a wedding planner that includes the date of the wedding,the names of the Couple being married, and a String for the location. Provideconstructors for each class that accept parameters for each field, and provide getmethods for each field. Then write a program that creates two Wedding objectsand in turn passes each to a method that displays all the details. Save the files asPerson.java, Couple.java, Wedding.java, and TestWedding.java.(Date Class) Create a class called Date that includes three pieces of information as auto-implemented properties—a month (type int), a day (type int) and a year (type int). Your class should have a constructor that initializes the three automatic properties and assumes that the values provided are correct. Provide a method DisplayDate that displays the month, day and year separated by forward slashes (/). Write a test app named DateTest that demonstrates class Date’s capabilities.
