Java, polymorphism refers to the fact that you can have __________ a. multiple class with the same name b. multiple methods with the different name in the same class c. multiple methods with the same name in the same class d. multiple methods with the same name in the different class
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- MUST BE IN JAVA Following the example of the Circle class in Section 9.2, design a class named Rectangle to represent a rectangle. The class contains: - Two double data fields named width and height that specify the width and height of the rectangle. The default values are 1 for both width and height. - A no-arg constructor that creates a default rectangle. - A constructor that creates a rectangle with the specified width and height. - A method named getArea() that returns the area of this rectangle. - A method named getPerimeter() that returns the perimeter. Draw the UML diagram for the class and then implement the class. Write a test program that creates two Rectangle objects—one with width 4 and height 40 and the other with width 3.5 and height 35.9. Display the width, height, area, and perimeter of each rectangle in this order.Sample RunThe area of a rectangle with width 4.0 and height 40.0 is 160.0The perimeter of a rectangle is 88.0The area of a rectangle with width 3.5 and…WRITE A JAVA CODE FOR THE FOLLOWING Develop a set of classes for a college to use in various student service and personnel applications. Classes you need to design include the following: • Person — A Person contains the following fields, all of type String: firstName, lastName, address, zip, phone. The class also includes a method named setData that sets each data field by prompting the user for each value and a display method that displays all of a Person’s information on a single line at the command line on the screen. For example: Joe Smith 111-N-Student-Lane 88888 888-888-8888 • CollegeEmployee — CollegeEmployee descends from Person. A CollegeEmployee also includes a Social Security number (ssn of type String), an annual salary (annualSalary of type double), and a department name (dept of type String), as well as methods that override the setData and display methods to accept and display all CollegeEmployee data in addition to the Person data. The display method should display…(The Rectangle class) Following the example of the Circle class in Section 8.2,design a class named Rectangle to represent a rectangle. The class contains:■ Two double data fields named width and height that specify the width andheight of the rectangle. The default values are 1 for both width and height.■ A no-arg constructor that creates a default rectangle.■ A constructor that creates a rectangle with the specified width and height.■ A method named getArea() that returns the area of this rectangle.■ A method named getPerimeter() that returns the perimeter.Draw the UML diagram for the class and then implement the class. Write a testprogram that creates two Rectangle objects—one with width 4 and height 40and the other with width 3.5 and height 35.9. Display the width, height, area,and perimeter of each rectangle in this order.
- Implement a class called Account which defines a modified banking account that can be created with a given balance and account name. It must be able to perform the following operations in the public interface: - Accepts an amount to deposit the balance - Withdraws an amount from the balance - Returns its balance - Returns its name - Displays its name and balance Write a Java application called AccountSystem to simulate an instance of the class. You need to use deposit and withdrawal methods in this program. USING INTELLIJ IDEA COMMUNITY(Java) Create a class called Date that includes three instance variables-a month (type int), a day (type int) and a year (type int). Provide a constructor that initializes the three instance variables and assumes that the values provided are correct. Provide a set and a get method for each instance variable. Provide a method displayDate that displays the month, day and year separated by forward slashes (/). Add a main method to the class that demonstrates class Date's capabilities. Standard output: Enter·the·month,·day·and·year·in·the·form·XX·XX·XXXX·and·hit·enter:The·Date·object's·state·is:·11/5/1929↵ Enter·a·new·year:The·Date·object's·state·is:·11/5/1978↵ Enter·a·new·day:The·Date·object's·state·is:·11/12/1978↵ Enter·a·new·month:The·Date·object's·state·is:·6/12/1978↵The Rectangle class) Following the example of the Circle class in Section 9.2, design a class named Rectangle to represent a rectangle. The class contains: ■ Two double data fields named width and height that specify the width and height of the rectangle. The default values are 1 for both width and height. ■ A no-arg constructor that creates a default rectangle. ■ A constructor that creates a rectangle with the specified width and height. ■ A method named getArea() that returns the area of this rectangle. ■ A method named getPerimeter() that returns the perimeter.Draw the UML diagram for the class and then implement the class. Write a test program that creates two Rectangle objects—one with width 4 and height 40and the other with width 3.5 and height 35.9. Display the width, height, area, and perimeter of each rectangle in this order.
- In Java: Create a class called Date that includes three instance variables-a month (type int), a day (type int) and a year (type int). Provide a constructor that initializes the three instance variables and assumes that the values provided are correct. Provide a set and a get method for each instance variable. Provide a method displayDate that displays the month, day and year separated by forward slashes (/). Add a main method to the class that demonstrates class Date's capabilities.IN JAVA First of all you need to store your desired information for each person. For this you can createa user-defined data type (i.e. a class). Make a class PersonInfo with name, address and phonenumber as its attributes. Write a parameterized constructor for this class. Write print methodin PersonInfo class that displays one person record on a message dialog box.Step2 – Make AddressBook classTake the example of daily life; generally address book is used to store more than one personrecords and we don’t know in advance how many records are going to be added into it. So,we need some data structure that can help us in storing more than one PersonInfo objectswithout concerning about its size. List can be used to achieve the above functionality.1- Create a class AddressBookArrayList with an object persons of ArrayList as itsattribute. This arraylist will be used to store the information of different persons inthe form of PersonInfo Objects. This class will also provide…Implement a class named Rectangle to represent a rectangle using Java 1) Class name: Rectangle; accessibility: public 2) The class contains: Two private double data fields named width and height that specify the width and height of the rectangle. 3) A no-arg constructor that creates a default rectangle: data fields are 1 for both width and height. 4) A constructor that creates a rectangle with the specified width and height. 5) A public method named setWidth that sets the value of width 6) A public method named getWidth that returns the value of width 7) A public method named setHeight that sets the value of height 8) A public method named getHeight that returns the value of height 9) A public method named getPerimeter() that returns the perimeter. 10) A public method named getArea() that returns the area of this rectangle. 11) Draw the UML class diagram 12) Write a test file that creates two Rectangle objects: one with width 4 and height 40 and the other with width 3.5 and…
- Write a program using java programing language. Write a Java class (called ShowNum) that displays the same number of asterisks (row and columns) as is input in 2 numbers. Your class should have a default constructor (number1 is 0, number2 is 0) and another constructor that inputs 2 numbers (integers). You'll need accessor methods for the numbers and a display method that displays as follows: Input: 2, 7 ******* ******* Demo the class in a client (called ShowNumClient) that allows the user to run the program as many times as they want (enter number and use display method). The user will signal with a sentinel (-1), when they want to terminate the client. Make sure that each number entered in the client is between 1 and 30.Java question please Create a class called Account that has the following attributes: Account Client - AccountHolder Double - Balance Date - DateCreated Account() Account(Client AccountHolder, Double Balance) getAccountHolder() - Client setAccountHolder(Client) - void getBalance() - Double deposit(Double) - Double withdrawal(Double) - Double getDateCreated() - Date toString() - String compareTo(Account) - Integer equals(Account) - Double Notes: The account holder attribute will link to the Account class that you created in problem 6. Your constructor and overloaded constructor should set the date created to the current date. Your deposit method should add to the balance Your withdrawal method should remove from the balance, as long as there is enough money to withdrawalplease use java to answer the following question Design and implement a class named Triangle that extends GeometricObject. The class contains: Three double data fields named side1, side2, and side3 with default values 1.0 to denote three sides of the triangle. A no-arg constructor that creates a default triangle. A constructor that creates a triangle with the specified side1, side2, and side3. The accessor methods for all three data fields. A method named getPerimeter() that returns the perimeter of this triangle. A method named toString() that returns a string description for the triangle. The toString() method is implemented as follows: return "Triangle: side1 = " + side1 + " side2 = " + side2 + " side3 = " + side3; Write a test program that prompts the user to enter three sides of the triangle, a color, and a boolean value to indicate whether the triangle is filled. The program should create a Triangle object with these sides and set the color and filled properties…