Design a class named MyPoint to represent a point withx- and y-coordinates. The class contains:■■ The data fields x and y that represent the coordinates with getter methods.■■ A no-arg constructor that creates a point (0, 0).■■ A constructor that constructs a point with specified coordinates.■■ A method named distance that returns the distance from this point to aspecified point of the MyPoint type.■■ A method named distance that returns the distance from this point toanother point with specified x- and y-coordinates.■■ A static method named distance that returns the distance from two MyPointobjects.Draw the UML diagram for the class then implement the class. Write a testprogram that creates the two points (0, 0) and (10, 30.5) and displays the distancebetween them.

Design a class named MyPoint to represent a point withx- and y-coordinates. The class contains:■■ The data fields x and y that represent the coordinates with getter methods.■■ A no-arg constructor that creates a point (0, 0).■■ A constructor that constructs a point with specified coordinates.■■ A method named distance that returns the distance from this point to aspecified point of the MyPoint type.■■ A method named distance that returns the distance from this point toanother point with specified x- and y-coordinates.■■ A static method named distance that returns the distance from two MyPointobjects.Draw the UML diagram for the class then implement the class. Write a testprogram that creates the two points (0, 0) and (10, 30.5) and displays the distancebetween them.

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter11: Advanced Inheritance Concepts

Section: Chapter Questions

Problem 3PE

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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).
1 - Student class 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 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 of the student, rounded to nearest half (upwards, 6.75 -> 7). As per regulations, a 5.5 becomes a 6. If the student did not pass both the assignments (>= 95…
Create a class Course, which has one field: String courseName Create the constructor, accessor, and mutator for the class. Then, in the main method of this class, create an instance of the class with the name "CST1201". Write an equivalent while statement to replace the following for statement for (int i=2; i<100; i=i+2) { System.out.println(i); }
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Modify the Date class below by adding a new method called nextDay() that increments the Date by 1 when called and returns a new Date object. This method should properly increment the Date across Month boundary (i.e from the last day of the month to the first day of the next month). //Date class declaration public class Date { private int month; // 1-12 private int day; // 1-31 based on month private int year; // any year private static final int [] daysPerMonth = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; //constructor: confirm proper value for month and day given the year public Date (int month, int day, int year) { //check if month in range if (month <=0 II month > 12) { throw new IllegalArgumentException( “month (“ + month + “) must be 1-12”); } //check if day in range for month if…
In Java, Create a class Rectangle with double attributes length and width. The default constructor should set these attributes to 1. Provide methods that calculate the rectangle's perimeter and area, as well as accessors and mutators for both data fields. The mutator methods for length and width should verify that the number being passed in is larger than 0.0 and less than 20.0 -- if it doesn't fit those criteria, the value of the field should not be changed.Write a Driver class in the same file to test your Rectangle class. It should prompt the user to enter a length and width of a rectangle, and then print out the area and perimeter of the rectangle. (Use the mutators to set the length and width of the rectangle, not the constructor.)
Design a public class named Rectangle to represent a rectangle following the example of the Circle class we did in Lesson #5. The Rectangle class contains:• Data fields:o private double data field width with default value 2o private double data field length with default value 3• Two constructor methods:o A no-argument constructor that creates a default rectangle with the default valueso A constructor that creates a rectangle with the specified width and length in the formal parameters• Instance methods:o A public method named getPerimeter() that returns the perimeter of the rectangle (double)o A public method named getArea() that returns the area of the rectangle (double)o Public getter methods to access the data fields, specifically:▪ getWidth()▪ getLength()o Public setter methods to set the data fields to values passed in▪ setWidth (double newWidth)▪ setLength(double newLength)INFO 1214 –Assignment 3Page 2Write a simple test program call TestRectangle like we did in class that…
Design an interface named Colorable with a voidmethod named howToColor(). Every class of a colorable object must implementthe Colorable interface. Design a class named Square that extendsGeometricObject and implements Colorable. Implement howToColor todisplay the message Color all four sides. The Square class contains adata field side with getter and setter methods, and a constructor for constructinga Square with a specified side. The Square class has a private double datafield named side with its getter and setter methods. It has a no-arg constructorto create a Square with side 0, and another constructor that creates a Squarewith the specified side.Draw a UML diagram that involves Colorable, Square, and GeometricObject.Write a test program that creates an array of five GeometricObjects. For eachobject in the array, display its area and invoke its howToColor method if it iscolorable.
Please write the Java code for a Phone class that represents a mobile phone, as detailed below: It should have instance variables (attributes) for make, model, color (all stored as Strings) and capacity (stored as int: the storage capacity in GB) Please define one constructor with parameters for all those attributes. The Phone class will be immutable, except its storage capacity can be changed. So please write only one mutator method, called .setCapacity. Please write accessor methods for each instance variable. Please write a .toString() method to display all the Phone's information. Please write a .equals method to compare two Phone objects, returning true if all their attributes are the same. Finish the Jave program to show the outputs bellow: Code: class Main { public static void main(String[] args) { Phone craigPhone, bettoPhone, tobyPhone; craigPhone = new Phone("Samsung", "Galaxy S21 5G", "Phantom Violet", 256); bettoPhone = new Phone("Apple", "iPhone 13 Pro",…
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