Java program Answer This question has more than one right answer What is the meaning of the keyword 'this', and how can the keyword be used? Select allthat apply.It is used when one object wants to access data from a second object.O It refers to the object on which a method or constructor has been called (sometimes called the"implicit parameter").It can be used to call the object's methods.O It is used to call one constructor from another.It can be used to access or set an object's field valuesO It is required when a class has more than one constructor.O It is used in conjunction with the 'that' keyword when the programmer wants to write a parallel"this and that" algorithm.

Name: Java program Answer This question has more than one right answer What
Uploaded: 2024-03-20T06:51:23.000Z
Channel: Bartleby
Description: Java program Answer This question has more than one right answer What is the meaning of the keyword 'this', and how can the keyword be used? Select allthat apply.It is used when one object wants to access data from a second object.O It refers to the

Answered: What is the meaning of the keyword…

Engineering

Computer Science

What is the meaning of the keyword 'this', and how can the keyword be used? Select all that apply.

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter10: Object-oriented Programming

Section: Chapter Questions

Problem 19RQ

See similar textbooks

Similar questions

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;
Hi there, I have attached the errors, the assignemnt is bleow and my code below that. PLease could you help fix these errors? Thank you so much in advance. Kind regards assignment: Make a class student (in student.py) that stores the following information for a student: Name (name) Student number (student_nr) Points per assignment (points_per_assignment) Exam grade (exam_grade) a) Behind each point of information is the name of the parameter to the initializer method. Store this information from the parameters in the object's attributes with the same name. b) Add a method course_points() which returns the number of course points the student has gotten. Example: mary = Student("Mary", 15789613, [10, 9, 8, 10, 9, 10], 9)print(mary.course_points()) > 121 The calculation of the course points is explained in the course overview, course setup slides (Links to an external site.) and the first lectureLinks to an external site.. c) Add a method grade() which returns a the final grade…
can you help me how to test this Part 1: Test Program Write a program to test all test cases outlined in the test plan. For each method (unit) being tested, ensure your client program provides output clearly describing the method being tested along with the expected and actual result. When testing constructors, verify the results by calling an accessor method of the class. When testing mutators, use the accessor method to verify the state change. When a test fails (actual does not match the expected), correct the method code, then re-test. Keep in mind that a poorly written test can produce inaccurate test results. If a test fails, ensure you have written the test correctly before modifying your unit code. Output Requirement For each method (unit), output the method signature. For each test, output the following: Test number Outcome description Expected result Actual result Leave one blank line between each test. Sample StudentGrades(int) Test #1 - Initialize grades array…
Given the class declaration and instance method definitions and based on what you learned about separate compilation, what would be a good name for the header file containing the declaration, and what would be a good name for the source file containing the instance method definitions? // This is the class declaration class Rectangle { public: Rectangle(double width, double height); double get_height() const; double get_width() const; double get_area() const; private: double _width; double _height; }; // This is the instance method definition Rectangle::Rectangle(double width, double height) { _width = width; _height = height; } double Rectangle::get_height() const { return _height; } double Rectangle::get_width() const { return _width; } double Rectangle::get_area() const { return _width * _height; }
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.
THE BELOW IS IMPORTANT Rewrite the above code so that It has all of the correct access modifiers for good encapsulation. Your code obeys the principle of encapsulation that obliges you to put each method in the proper class. Your code uses NO getters and NO additional classes or methods. You are welcome to modify any existing methods (including signatures and bodies) and/or move them between the existing classes. Your code DOES NOT modify any of the constructors. Important notes: You DO NOT have to write a main method. You DO NOT have to write tests. You DO NOT have to write Javadocs. You DO NOT have to write interfaces to encapsulate data structures. There should be no incorrect syntax or other compile-time errors.
a. Write a FractionDemo program that instantiates several Fraction objects and demonstrates that their methods work correctly. Create a Fraction class with fields that hold a whole number, a numerator, and a denominator. In addition: Create properties for each field. The set access or for the denominator should not allow a 0 value; the value defaults to 1. Add three constructors. One takes three parameters for a whole number, numerator, and denominator. Another accepts two parameters for the numerator and denominator; when this constructor is used, the whole number value is 0. The last constructor is parameterless; it sets the whole number and numerator to 0 and the denominator to 1. (After construction, Fractions do not have to be reduced to proper form. For example, even though 3/9 could be reduced to 1/3, your constructors do not have to perform this task.) Add a Reduce() method that reduces a Fraction if it is in improper form. For example, 2/4 should be reduced to 1/2. Add an operator+() method that adds two Fractions. To add two fractions, first eliminate any whole number part of the value. For example, 2 1/4 becomes 9/4 and 1 3/5 becomes 8/5. Find a common denominator and convert the fractions to it. For example, when adding 9/4 and 8/5, you can convert them to 45/20 and 32/20. Then you can add the numerators, giving 77/20. Finally, call the Reduce() method to reduce the result, restoring any whole number value so the fractional part of the number is less than 1. For example, 77/20 becomes 3 17/20. Include a function that returns a string that contains a Fraction in the usual display formatâ€”the whole number, a space, the numerator, a slash (D, and a denominator. When the whole number is 0, just the Fraction part of the value should be displayed (for example, 1/2 instead of 0 1/2). If the numerator is 0, just the whole number should be displayed (for example, 2 instead of 2 0/3). b. Add an operator*() method to the Fraction class created in Exercise 11a so that it correctly multiplies two Fractions. The result should be in proper, reduced format. Demonstrate that the method works correctly in a program named FractionDemo2. c. Write a program named FractionDem03 that includes an array of four Fractions. Prompt the user for values for each. Display every possible combination of addition results and every possible combination of multiplication results for each Fraction pair (that is, each type will have 16 results).
Which of the following statements is false? a. A class can contain only one constructor. b. An example of a behavior is the SetTime method in a Time class. c. An object created from a class is referred to as an instance of the class. d. An instance of a class is considered an object.
Which of the following statements are false? (All that are not true). Group of answer choices A reference of type super class can refer to an instance of type subclass. A reference of type subclass can refer to an instance of type super class. A method in the super class can be overridden two different ways in two different subclasses. A method in the super class can be overridden by changing its signature in the subclass.
Modify the student class presented in this chapter as follows. Each student object should also contain the scores for three tests. Provide a constructor that sets all instance values based on parameter values. Overload the constructor such that each test score is assumed to be initially zero. Provide a method called setTestScore that accepts two parameters: the test number (1 through 3) and the score. Also provide a method called getTestScore that accepts the test number and returns the appropriate score Provide a method called average that computes and returns the average test score for this student. Modify the toString method such that the test scores and average are included in the description of the student. Modify the driver class main method to exercise the new Student methods. (c++ language)
Modify the student class presented in this chapter as follows. Each student object should also contain the scores for three tests. Provide a constructor that sets all instance values based on parameter values. Overload the constructor such that each test score is assumed to be initially zero. Provide a method called setTestScore that accepts two parameters: the test number (1 through 3) and the score. Also provide a method called getTestScore that accepts the test number and returns the appropriate score Provide a method called average that computes and returns the average test score for this student. Modify the toString method such that the test scores and average are included in the description of the student. Modify the driver class main method to exercise the new Student methods. (Java)
Which of the following statements is false? a. A class can contain only one constructor. b. An example of a behavior is the SetTime method in a Time class. c. An object created from a class is referred to as an instance of the class. d. An instance of a class is considered an object.