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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:
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- Q1: Class called (num) and an objeet of this class called (numl).This class contains two data members of type int ( a and b) with private access and two member funetions with public access: Constructor to give value to variables and show_number() to display the sum and multiply of variables. Write a program to set and display the object fields.Create an Account class that a bank might use to represent customers’ bank accounts. Include a data member to represent the account balance. Provide a constructor that receives an initial balance and uses it to initialize the data member. The constructor should validate the initial balance to ensure that it is greater than or equal to 0. If not, set the balance to 0. Provide three member functions:- credit($amount) should add amount to the current balance- debit($amount) should ensure that amount does not exceed the current balance and then reduce the current balance by amount. The balance should not change if amount exceeds the balance.- getBalance() should return the current balanceNote: Create a set of test data and then write a program to test the class.Part-1 (Objects and Classes) Create a Java Project (with a class and a test class) to represent some real-world entity such as a technology item (TV, Fan etc), an animal, a person, a vehicle, etc. In our class, we have already seen example classes such as Circle, Student, Rectangle, TV etc. The class will: a) Create a total of 5 member variables for the class by selecting the appropriate data types for each field. For example, a class to represent a lamp might include color, price, height, numBulbs, batteryOperated. Each of these 5 variables needs a data type. b) Include at least three different constructor methods, including the default constructor (no argument constructor), so totally three constructors. c) Create a method called showValues( ) to display the values of an object in a formatted manner. The Java test class (with a main method) will: a) Instantiate alseast three objects (using each of the constructors at least once) with your program. b) Store the data from the…
- Create a class named RealEstate that has data members to hold the price of a house, the number of bedrooms, and the number of baths. Make a member function get_Data() that gets the RealEstate's data from the user, and throws an appropriate error message if negative values are entered for any of the data members. Add a display() function that displays the RealEstate's data. Write a main() function that instantiates a RealEstate object, allows the user to enter the RealEstates data, use an ofstream object to store the RealEstate's data in RealEstate.dat file, and close the ofstream object. Then open an ifstream object to read information from file, RealEstate.dat, and displays the information.Part-1 (Objects and Classes) Create a Java Project (with a class and a test class) to represent some real-world entity such as a technology item (TV, Fan etc). an animal, a person, a vehicle, etc. In our class, we have already seen example classes such as Circle, Student, Rectangle, TV etc. The class will: a) Create a total of 5 member variables for the class by selecting the appropriate data types for each field. For example, a class to represent a lamp might include color, price, height, numBulbs, batteryOperated. Each of these 5 variables needs a data type. b) Include at least three different constructor methods, including the default constructor (no argument constructor), so totally three constructors. c) Create a method ealled showValues( ) to display the values of an object in a formatted manner. The Java test class (with a main method) will: a) Instantiate at least three objects (using each of the constructors at least once) with your program. b) Store the data from the…2) Create an Account class that a bank might use to represent customers bank accounts. Include a data member of type int to represent the account balance. Provide a constructor that receives an initial balance and uses it to initialize the data member. The constructor should validate the initial balance to ensure that it’s greater than or equal to 0. If not ,set the balance to 0 and display an error message indicating that the initial balance was invalid. Provide three member functions. Member function credit should add an amount to the current balance. Member function debit should withdraw money from the Account and ensure that the debit amount does not exceed the Account’s balance. If it does, the balance should be left unchanged and the function should print a message indicating "Debit amount exceeded account balance." Member function get Balance should return the current balance. Create a program that creates two Account objects and tests the member functions of class Account.…
- a) Implement a class Point with three attributes, x, y, and z.b) Implement an init method with an optional parameter type: 1) Set the default value of x, y, and z to 0.c) Implement a display method to print the values of x, y, and z as the example output below.d) Instantiate two objects of type Point, one with arguments,1, 2, and 3, and the other one without any arguments.e) Call display() to print x, y, and z. Example Output(x, y, z): (1, 2, 3)(x, y, z) : (0, 0, 0)Create an employee class, basing it on previous lab. The member data should comprise an int for storing the employee number, a string for storing the name and a float for storing the employee’s salary. Member functions should allow the user to enter this data and display it. Write a main () that allows the user to enter data for three employees and display it.Q1: Create two classes named Mammals and SeaAnimal. Create another class named Whale whichinherits both the above classes. Now, create a function in each of these classes which prints "I ammammal" in class Mammals, "I am a marine animal” in class Marine and "I belong to both thecategories: Mammals as well as Marine Animals" in class Whale. Now, create an object for each of theabove class in main function and try calling.1 - function of Mammals by the object of Mammal2 - function of SeaAnimal by the object of SeaAnimal3 - function of Whale by the object of Whale4 - function of each of its parent by the object of Whale
- 5 (The Time class) Design a class named Time. The class contains: ■ Data fields hour, minute, and second that represent a time. ■ A no-arg constructor that creates a Time object for the current time. ■ A constructor that constructs a Time object with a specified elapse time since the middle of night, Jan 1, 1970, in seconds. ■ A constructor that constructs a Time object with the specified hour, minute, and second. ■ Three get functions for the data fields hour, minute, and second. ■ A function named setTime(int elapseTime) that sets a new time for the object using the elapsed time. Draw the UML diagram for the class. Implement the class. Write a test program that creates two Time objects, one using a no-arg constructor and the other using Time (555550), and display their hour, minute, and second. (Hint: The first two constructors will extract hour, minute, and second from the elapse time. For example, if the elapse time is 555550 seconds, the hour is 10, the minute is 19, and the…Create a class Distance with feet and inches as a private dada members. Feet has int type and inches has float type. Create getdist & showdist functions which take values from user and then display these values respectively. Create another class Sign with sign as a private data member. Sign has a char data type. Class sign is inherited with distance class. Create getdist and showdist function to get values from user and then display all values. Create default & arrguments constructor also. Add a static data member named objCount, initialize it to 0 using scope resolution operator outside the class, add a function in the class to print the value of objCount.Create a class Distance with feet and inches as a private dada members. Feet has int type and inches has float type. Create getdist & showdist functions which take values from user and then display these values respectively. Create another class Sign with sign as a private data member. Sign has a char data type. Class sign is inherited with distance class. Create getdist and showdist function to get values from user and then display all values. Create default & arrguments constructor also.