Assume a Pet class contains a declaration for a method called getName () that returns a String. Later, we do this: public class Dog extends Pet{ ... How would we go about overriding this method in the new class? O We can only override this method if it is abstract in the Pet class We must declare a method in the new class with the same method name and parameter list O We must first use the super () constructor to ensure that the name has a value O We must declare a method in the new class with the same method name and return type
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- Novice: How can i access a main class objects from outside the function? / Better Alternative? If i have 4 Student objects how can i print the information for the specific object given one parameter about the class, like the students Idnumber. What i came up with was making a checkId void function that takes the user input and runs an if else chain checking if the Id belongs to student 1-4 then printing the details of that classes object with the void function print. ideally i would want the if-else chain in the checkId function to call the print( student1-4) class object but im not sure how to properly do that. i dont think this is the best way to go about it, if you have any recommendations or alternatives please help me out.Create a class BeautyProduct with name, color, brand. Provide Constructors, getters, setters and also write toString method. Now create a class Lipstick which extends the class BeautyProduct as Lipstick is-a Beauty Product it has totalVolume, remainingVolume, price, texture (gloss, matt) as private data members. Provide Constructors, getters, setters and an apply() method whenever this method is called a beauty item is applied and its volume decreases by 10.This should also check that volume must not be zero if it then u have to throw exception. Also write toString method which prints all details like name, color, brand, price, texture and volume. Create another class foundation having totalVolume, remainingVolume, price, texture (liquid, cake) and lastingTime (number of hours foundation remain intact on face and does not crease) as private data members. This also extends the base class i.e. BeautyProduct. Provide Constructors, getters, setters and an apply() method whenever this…Computer Science You are required to develop a small chatting application where two or more friends can communicate each other through messages. Create a class Message which has Date d, and message (string). Provide getters/setters, constructors, toString. Create a class Friend having String name, String contact, email and ArrayList of Messages provide getters/setters, constructors, toString addMessage(Message m) method which will add new message to the list. Provide following options to the user using JFrame. Login which will help user login to the application. View Friends (Display List of All Friends) View Messages ( This should display all message of a Friend) Send message (This should ask for friend name and message match the friend name and write that message to the array list).
- Urgent Quick Question Write an equals method for the StepsFitnessTracker class that tests whether the one object is equal to another object that is passed as an argument (Object otherObject). The Object superclass provides an equals method that tests if two object references are equal. Your new equals method should override the Object equals method, and should test the following: • Return true if the current (this) object, and otherObject are identical references (hint: you can use the == operator for this). • Returns false if otherObject is null. • Returns false if the current (this) object and otherObject have different classes (hint: you can use the getClass() method provided by the Object superclass, see the Java 8 API documentation for details). • Casts otherObject to a StepsFitnessTracker, and tests for equality of each instance variable1 , if the instance variables are the same the method should return true. 1 To test for equality of each instance variable, you might want to…Urgent Quick Question Write an equals method for the StepsFitnessTracker class that tests whether the one object is equal to another object that is passed as an argument (Object otherObject). The Object superclass provides an equals method that tests if two object references are equal. Your new equals method should override the Object equals method, and should test the following: • Return true if the current (this) object, and otherObject are identical references (hint: you can use the == operator for this). • Returns false if otherObject is null. • Returns false if the current (this) object and otherObject have different classes (hint: you can use the getClass() method provided by the Object superclass, see the Java 8 API documentation for details). • Casts otherObject to a StepsFitnessTracker, and tests for equality of each instance variable1 , if the instance variables are the same the method should return true. Now write an equals method for the DistanceFitnessTracker and…Complete the code for the Student class method called void loadStudent(...) that receives a single string parameter. This string parameter will contain student details in the following format: ’Name’,’Surname’,’Email’,’Age’,’Student Number’ Write the code to separate the string and assign the correct values to the Student class members. Create an overloaded > (greater than) operator in the Student class. The operator will compare the age of two student objects and return the object with the greater age. In main.cpp create a non member function named isFemale. This function will receive as parameter a pointer to a student object. If the last two numbers of the student number is valid numbers (Must be between 0 and 9) the function will return true. Otherwise the function will return false. Overload the default constructor for Student to receive a single string parameter. This string parameter will contain student details in the following format:…
- 2019 AP® COMPUTER SCIENCE A FREE-RESPONSE QUESTIONS 2. This question involves the implementation of a fitness tracking system that is represented by the StepTracker class. A StepTracker object is created with a parameter that defines the minimum number of steps that must be taken for a day to be considered active. The StepTracker class provides a constructor and the following methods. addDailySteps, which accumulates information about steps, in readings taken once per day activeDays, which returns the number of active days averageSteps, which returns the average number of steps per day, calculated by dividing the total number of steps taken by the number of days tracked The following table contains a sample code execution sequence and the corresponding results. Statements and Expressions Value Returned Comment (blank if no value) StepTracker tr StepTracker(10000); Days with at least 10,000 steps are considered active. Assume that the parameter is positive. new tr.activeDays () ; No…•Person Class: Person class has attributes: String name, address and int age. Write setperson() function to set values and getPerson() to Print attributes. Also write appropriate constructors.•Employee Class: Write another class Employee having attributes department and salary of type string and double. Write methods setEmployee(), getEmployee() and appropriate constructors for Employee class.•Student Class:•Write a class Student having attributes registration number and GPA of type string and float. Also write setStudent(), getStudent() methods and required constructors. Use the concept of inheritance to achieve the above functionality. Write a main() function to display the information of employee and student.• Note: Call the constructors/methods of parent class in child class where required in java code•Person Class: Person class has attributes: String name, address and int age. Write setperson() function to set values and getPerson() to Print attributes. Also write appropriate constructors. •Employee Class: Write another class Employee having attributes department and salary of type string and double. Write methods setEmployee(), getEmployee() and appropriate constructors for Employee class. •Student Class: •Write a class Student having attributes registration number and GPA of type string and float. Also write setStudent(), getStudent() methods and required constructors. Use the concept of inheritance to achieve the above functionality. Write a main() function to display the information of employee and student. • Note: Call the constructors/methods of parent class in child class where required
- 1. Create a class Employee with parameters name, id, designation, and basicSalary. Use appropriate datatypes and access specifiers. Use default constructor to create objects of employee. Write methods toset and get the values of parameters of employee. Write methods to find total salary of employee andto display the complete details of employee along with total salary. Create another class TestEmployeewhich creates array of n number of employees, uses appropriate set methods to set the values ofparameters of every employee. Display the details of each employee. (Total salary = basic salary + 80%of basic salary)Create a Right Triangle class that has two sides. Name your class rightTraingle. Code getter and setters for the base and the height. (Remember class variables are private.) The class should include a two-argument constructor that allows the program to set the base and height. The constructor should verify that all the dimensions are greater than 0. before assigning the values to the private data members. If a side is not greater than zero, set the value to -1. The class also should include two value-returning methods. One value-returning method should calculate the area of a triangle, and the other should calculate the perimeter of a triangle. If either side is -1, these functions return a -1. The formula for calculating the area of a triangle is 1/2 * b*h, where b is the base and h is the height. The formula for calculating the perimeter of a triangle is b+h+sqrt (b*b+h*h). Be sure to include a default constructor that initializes the variables of the base, height to -1. To test…(1) Extend the ItemToPurchase class to contain a new attribute. item_description (string) - Set to "none" in default constructor Implement the following method for the ItemToPurchase class. print_item_description() - Prints item_description attribute for an ItemToPurchase object. Has an ItemToPurchase parameter. Ex. of print_item_description() output: Bottled Water: Deer Park, 12 oz. (2) Build the ShoppingCart class with the following data attributes and related methods. Note: Some can be method stubs (empty methods) initially, to be completed in later steps. Parameterized constructor which takes the customer name and date as parameters Attributes customer_name (string) - Initialized in default constructor to "none" current_date (string) - Initialized in default constructor to "January 1, 2016" cart_items (list) Methods add_item() Adds an item to cart_items list. Has parameter ItemToPurchase. Does not return anything. remove_item() Removes item from cart_items list.…