Create a class named ClassA. Define two instance variables along with getter and setter named: att1, att2. Define a private constructor with no arguments. Now try to create instance of the class from a test class. What problem do you face? How can you resolve this issue?
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- Question 1: Create a class named ClassA. Define two instance variables along with getter and setter named: att1, att2. Define a private constructor with no arguments. Now try to create instance of the class from a test class. What problem do you face? How can you resolve this issue?Write a driver program to test the class. Provide a constructor thatenables an object of this class to be initialized when it isinstantiated.Question 1 Create a base class Student. The class has the following private instance variables, constructor, and methods. * A String instance variable m id. *A String instance variable m name. • An int instance variable m creditHours. • A constructor that takes three parameters and sets the values of the instance variables accordingly. • Getters for the above three instance variables. • A boolean equals (Student s) method that compares the current student object and the object passed into the method. It returns true if the two objects have the same content, i.e., id, name, and hours. Otherwise, it returns false. • Override the toString () method so it prints the info of the current student object in the following format: Student ID: 123456 Name: Kungfu Panda Credit Hours Earned: 95 • Build a test driver by creating a class TestStudent to test the functionality of the class Student: 1. Remember to print the object by SOPL (object name), rather than explicitly calling the toString ()…
- Given this class, please add the requested methods in the designated spaces provided. Instance methods: a) Write two constructors that will initialize the instance variables for a Student instance as follows: 1) Write a constructor that takes in three parameters – an int, a String, and a double. The constructor will assign them to the ID, name, and GPA instance variables respectively. 2) Write a no-argument (zero-parameter) constructor that will set the ID to - 1, the name to “No name assigned”, and the GPA to –1.0. b) Write an accessor method for the name variable. c) Write a mutator method for the GPA variable. d) Write a toString() method that will display all three instance variables on a single line, with a | (vertical bar) character between each one. e) Write an equals() method that returns true only if all three instance variables are equal. public class Student { // declare instance variables here private int ID; private String name; private double GPA;Design and implement a Restaurant class with at least three meaningful attributes and two methods. Implement a test program which creates at least two instances of the restaurant class and calls all the methods. Some possible attributes are name, numberOfTables, cuisine, numberOfReservations, capacity, etc. Some possible methods are make Reservation, checkAvailability, etc. Note the following: -All properties must be declared as private and you need accessor and mutator methods for each property. - You need to define at least one constructor. Documentation o Include header comments that include description of the program. o Include body comments o Consistent indentations o Consistent white line spaces Properties are declared as private o Accessor and mutator methods are created o At least one default constructor o At least two instances are createdWrite a tester program to test the mobile class defined below. Create the class named with your id (use : Id 190099306) with the main method. Create two mobiles M1 and M2 using the first constructor. Print the characteristics of M1 and M2. Create one mobile M3 using the second constructor. Change the id and brand of the mobile M3. Print the id of M3. Your answer should include a screenshot of the output. public class Mobile { private int id; private String brand; public Mobile() { id = 0; brand = ""; } public Mobile(int n, String name) { id = n; brand = name; } public void setBrand(String w) { brand = w; } public void setId(int w) { id = w; } Public int getId() { return id; } public String getBrand() { return brand; } } please provide me how to do the steps and i will try to work it alone. we didn't study this excersie in the lab
- 1.How do we gain access to private attributes outside of the class they are defined? Through public methods Through static methods Through private methods Through the class identifier 2. If you were designing a class called Point and the class had a static variable or function, which of the following would either define or use it correctly? self.x = x self.increaseNumPoints() def mystery(self, x, y): Point.numPoints += 1 3.To promote security and object ecapsulations, object attributes should be declared as: static protected private public 4. Two underscores ( __ ) will precede: public attributes private attributes public methods private methods Both public attributes and methods both private attributes and methods 5. Which of the following is required in a class to create unique…Q# A program that has no graphical user interface and only takes input through the command line only has a model and a controller. It does not have a view. The answer: is FALSE. Please explain with example. Q# What is NOT an effect of the SOLID principles? The answer: A high-level class depends on specific low-level classes and not interfaces. Please explain why. Q# Assume you are considering writing a method and are deciding what should happen when given input that is outside of perfect input. Which of the following is not a way to handle this? Answer: Use better JUnit testing. Subject: Java ProgrammingIs there a different way of doing this problem? Question: Create a class AccessPoint with the following attributes: x - a double representing the x coordinate y - a double representing the y coordinate range - an integer representing the coverage radius status - On or Off Add constructors. The default constructor should create an access point object at position (0.0, 0.0), coverage radius 0, and Off. Add accessor and mutator functions: getX, getY, getRange, getStatus, setX, setY, setRange and setStatus. Also, add a set function that sets the location coordinates and the range. Add the following member functions: move and coverageArea. Add a function overlap that checks if two access points overlap their coverage and returns true if they overlap. Add a function signalStrength that returns the wireless signal strength as a percentage. The signal strength decreases as one moves away from the access point location. Test your class by writing a main function that creates five access…
- Write the Movie class. The UML diagram of the class is represented below: 1. Implement the class strictly according to its UML one-to-one (do not include anythingextra, and do not miss any data fields or methods). 2. Implement a MovieTest class to test the class Movie you just created.• Create two Movie objects: one using the no-args constructor and one from theconstructor with all fields.• Print the contents of both objects. Please submit a screenshot. Hint: toString()method.Define a class named Employee. This class should extend the Person class from the previous question. The class should have a constructor, which takes the name, age, employer (String) and salary (int) as parameters (in that order). The first two parameters should be passed to the constructor of the superclass and the value of the last two parameters should be stored in instance variables. The class should define the methods, getSalary which returns the salary of the employee and getEmployer which returns the name of the employer. Any methods from the previous question that need to be overridden should be overridden! Use super and instanceof as appropriate. I.e., for the following methods you should be able to call the method in the superclass for specific situations (e.g. the compareTo method in the superclass can be called if you receive anything other than an Employee, and this also holds for the equals method). The toString method only needs to append details and as such can also…Note: Write a Java Program Given below Q NeuronTech is a leading service provider in Pakistan. Assuming you have been hired as an architect for NeuronTech solutions. You have been tasked with the development of an airline reservation system. Identify all the classes (at least four) with behaviors, attributes, constructor, getter/ setter. Draw class diagram. Create a Test class. Instantiate objects, use getter / setter to manipulate instance variables and call the behaviors.