Consider the following class definition: public class MyClass private int value; public void set Value(int i){ code */} /Other methods... The method setValue assigns the value of i to the instance field value. What could you write for implementation of setValue?
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- Write a class Point with instance variables as: xCoordinate(int) and yCoordinate(int). Write public instance methods (getters & setters) for each instance variable. Now, write a class Circle with private instance variables as radius and Pi (value is 3.14). Write public setter, getter for radius, Area method for calculating Area, Draw method for radius. Formula for calculating area=pi*r^2 Formula for calculating radius= sqrt (xCordinate^2+yCordinate^2) Extend a Circle class from Point class such as Class Circle extends Point Write a Default constructor in Circle class that sets radius, xCoordinate & yCoordinate to some default value e.g. -1; Write a Parameterized constructor in Circle class which takes xCoordinate, yCoordinate and radius as a parameter. E.g. Circle (int xCoordinate, int yCoordinate, double radius) { this.xCoordinate= xCoordinate; this.yCoordinate= yCoordinate;…Write a class Point with instance variables as: xCoordinate(int) and yCoordinate(int). Write public instance methods (getters & setters) for each instance variable. Now, write a class Circle with private instance variables as radius and Pi (value is 3.14). Write public setter, getter for radius, Area method for calculating Area, Draw method for radius. Formula for calculating area=pi*r^2 Formula for calculating radius= Math.sqrt (xCordinate^2+yCordinate^2) a. Extend a Circle class from Point class such as Class Circle extends Pointb. Write a Default constructor in Circle class that sets radius, xCoordinate & yCoordinate to some default value e.g. -1;c. Write a Parameterized constructor in Circle class which takes xCoordinate, yCoordinate and radius as a parameter.Now write a ColoredCirlce class with private instance variable as color (String) and public setter & getters. Extend the ColoredCircle from Circle and do the following operations.d. Write a default constructor…In java programming, how can I retrieve an int instance variable from another class without initialising the other class in my method. example: Test t = new Test(); ---*I dont want this part* int a = t.geta(); I want to get value of int a from class test.
- (1) Add an __init__ method to the Widget class below. Each object of type Widget should have an instance variable called name and an instance variable called cost that represents a cost in dollars; those values are passed in when an object of type Widget is initialized. (2) Add a method to class Widget called is_cheap that returns True if the cost is less than $10, and False otherwise. (3) Add proper doctrings along with two examples for each method. You may use the Sample Usage code given below in your work.tri1 and tri2 are instances of the Triangle class. Attributes height and base of both tri1 and tri2 are read from input. In the Triangle class, define instance method print_info() with self as the parameter to output the following in one line: 'Height: ' The value of attribute height ', base: ' The value of attribute baseCreate a PhoneListing class that uses the Name class for one of its instance variables. Remember the instance data in the Name class is private to the class and must be accessed through its methods.Add additional instance variables to the PhoneListing class for the phone number. The phone number should be broken down into three parts, area code, city code, and local code.Create all appropriate methods for the new class, including the following three methods: equals(PhoneListing):boolean, an equality of state method that returns true if the objects contain the same name and phone number. compareTo(PhoneListing):int, a comparison method that returns -1 if the calling PhoneListing object should precede the argument PhoneListing object, 1 if the calling PhoneListing object should come after the argument PhoneListing object, and a 0 if they are equal. Use last, first, middle, phone number as the ordering values. example:Adams, Alex, Henry, (609)473-2101 Adams, George, Henry, (509)373-1101…
- The Cat and Dog class below implement the Animal interface. All animals have names, but only dogs do tricks. Implement the describe method, using the instanceof operator to test whether the given animal is a dog. If so, return the name, a space, and the trick that the dog can do, such as "Helmut barks at the moon". If it is any other kind of animal, return the name, a space, and "has no tricks". public class Animals{ /** Describes the given animal. @param pet an animal @return a string with the animal's name, a space, and either the trick that the animal knows (if it is a dog) or a string "has no tricks" */ public static String describe(Animal pet) { // TODO: Complete this method } // This method is used to check your work public static String check(String name, String trick) { Animal pet; if (trick == null) pet = new Cat(name); else pet = new Dog(name, trick); return describe(pet); }Consider a class PersonAddress that represents an entry in an address book. Its attributes are The first name of the person The last name of the person The e-mail address of the person The telephone number of the person It will have methods to Access each attribute Change the e-mail address Change the telephone number Test whether two instances are equal based solely on name Write a method heading for each method. Write preconditions and postconditions for each method. Write some Java statements that test the class. Implement the class.Write the Boat class in Java Eclipse. A Boat has a registered name, a number of cabins, and a length.a) Define the instance variables (data fields).b) Include 2 constructors (default and one that receives the Boat registeredname, number of cabins and its length as an input).c) Write accessors (getters) and mutators (setters) methods for the instancevariables on your own. Verify/correct the answers with the help of Eclipse.
- Write a class encapsulating the concept of a student, assuming student has the following attributes: a name, a social security number, and a GPA (for instance 3.5). Include a constructor, the accessors and mutators, and methods toString() and equals(). Write a client class to test all the methods in your class.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;package1 and package2 are instances of the Box class. Attributes length, width, and height of both package1 and package2 are read from input. Then, scaling_factor1 and scaling_factor2 are read from input. In the Box class, define instance method scale_measurements() with self and one integer as parameters to: Assign attribute length with length's current value multiplied by the integer parameter. Assign attribute width with width's current value multiplied by the integer parameter. Assign attribute height with height's current value multiplied by the integer parameter.