Create a subclass named Square from the superclass GeometricObject. Create an instance variable named width with initial value 0 Create a no-arg constructor. Create the another constructor, which has one parameter named wid. Assign the wid to the instance variable named width. Create the getWidth() method, the setWidth() method. Override the getArea() method. Override the getPerimeter() method. Create a test class named Test to create an instance with wid%= 6 from Square class. Call the getArea() and getPermeter() methods to print out the area and perimeter of the square with width=6.

In Java Your uncle is trying to keep track of his new-car and used-car lots by writing a Java program. Heneeds your help in setting up his classes.Implement a superclass named Car that contains a price instance variable, a getPrice method, anda 1-parameter constructor. The getPrice method is a simple accessor method that returns the priceinstance variable’s value. The 1-parameter constructor receives a cost parameter and assigns avalue to the price instance variable based on this formula:price = cost * 2;Implement two classes named NewCar and UsedCar; they are both derived from the Carsuperclass. NewCar should contain a color instance variable (the car’s color). UsedCar shouldcontain a mileage instance variable (the car’s odometer reading). The NewCar and UsedCarclasses should each contain a 2-parameter constructor, an equals method, and a toString() method.In the interest of elegance and maintainability, don’t forget to have your subclass constructors callyour superclass constructors...

This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to format the salary...

1. For methods parameters are specified in the method definition, arguments are provided during a method call arguments are specified in the method definition, parameters are provided during a method call arguments override parameters parameters encapsulate arguments 2 Local variables are not automatically initialized. True False 3 Composition refers to an 'is-a' relationship. True False 4 Class constructors must be declared with a return type equal to the class. True False 5 Object instances are created using the "new" keyword. True False

Is 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...

Create a class named Poem that contains the following fields: title - the name of the poem (of type String) lines - the number of lines in the poem (of type int) Include a constructor that requires values for both fields. Also include get methods to retrieve field values. Create three subclasses: Couplet, Limerick, and Haiku. The constructor for each subclass requires only a title; the lines field is set using a constant value. A couplet has two lines, a limerick has five lines, and a haiku has three lines. These are the provided classes and subclasses : public class Poem { // Define the Poem class here } public class Limerick { // Define the Limerick class here } public class Haiku { // Define the Haiku class here } public class Couplet { // Define the Couplet class here } import java.util.*; public class DemoPoems { publicstaticvoidmain(String[] args) { Poem poem1 =newPoem("The Raven",84); Couplet poem2 =newCouplet("True Wit"); Limerick poem3 =newLimerick("There was an...

Write the Circle class:• A Circle has a radius– Add instance variable– 2 constructors – one should be the default or no args– Add accessor and mutator method for each instance variable– Add methods to calculate Area, Perimeter, and Diameter– Write a printArea method in the main program which receives an object circleand "times" integer– printArea() will print the radius and area of objects "times" time by changingthe radius of object.public static void printAreas(Circle c, int times) {System.out.println("Radius \t\t Area");while (times>=1) {//print the radius and area here// create a new object by changing the radius heretimes--;}}//end of printAreas

Create a Class Pet with the following data members Identification: String species : String (e.g. cat, dog, fish etc)  breed: String  Age (in days): int  Weight: float  Dead: boolean 1. Provide a constructor with parameters for all instance variables. 2. Provide getters for all and setters for only breed, and weight 3. Provide a method growOld() that increases the age of the pet by one day. A dead pet wont grow old 4. Provide a method growHealthy(float w) that increases the weight of the pet by the given amount w. A dead pet cannot grow healthy. 5. Provide a method fallSick(float w) that reduces the weight of the pet by the given amount. The least weight a pet can have is 0 which will mean that the pet has died. If the value of weigh is 10 kg and the method is called with an argument of 11 kg then you will set it to 0 and set the dead to an appropriate value to mark the death of the pet 6. Provide a toString method that shows an appropriate well formatted string...

Create a new project called Family. Add a person class with name, birthDate, and sex private instance variables. Create the public getter and setter methods for each. Create an overloaded constructor that initializes all of the instance variables. Create the default constructor. Override the toString () method to show the Person's info. Create the Person in the main method, and display that person's info. Now add a new instance variable to the Person class of type Person with the identifier spouse. Spouse should be private with setter and getter methods. If you try to instantiate spouse in the contructor, you will get a stack overflow error. Each Person, creates a Person, creates a Person, and so on forever. Try that to see the error and then remove the code from the constructor. Add the following logic: in Person there should be a method to show Spouse. If spouse is null, display or return "Not Married", otherwise call the toString() method. The should also be a get married method....

Create the class Suitcase. Suitcase has things and a maximum weight limit, which defines the greatest total allowed weight of the things contained within the Suitcase object. Add the following methods to your class: A constructor, which is given a maximum weight limit public void addThing(Thing thing), which adds the thing in the parameter to your suitcase. The method does not return any value. public String toString(), which returns a string in the form "x things (y kg)" The things are saved into an ArrayList object: ArrayList<Thing> things = new ArrayList<Thing>(); The class Suitcase has to make sure the thing's weight does not cause the total weight to exceed the maximum weight limit. The method addThing should not add a new thing if the total weight happens to exceed the maximum weight limit. Below, you find an example of how the class can be used: public class Main { public static void main(String[] args) { Thing book = new Thing("Happiness...

1. Define a Class: Circle Circle - radius: double + Circle() +Circle(double r) +setradius(double r): void +getradius() : double +calculateArea(): double +calculateCircumference: double 2. Use a Circle instance (object) in a main() method Program.

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Create a subclass named Square from the superclass GeometricObject. Create an instance variable named width with initial value 0. Create a no-arg constructor. Create the another constructor, which has one parameter named wid. Assign the wid to the instance variable named width. Create the getWidth() method, the setWidth() method. Override the getArea() method. Override the getPerimeter() method. Create a test class named Test to create an instance with wid= 6 from Square class. Call the getArea() and getPermeter() methods to print out the area and perimeter of the square with width=6.