An object that has more than one form is referred to as: a. Interface b. Abstract class c. Polymorphism d. Inheritance
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A: Given: Create an inheritance hierarchy that a bank might use to represent customers’ bank accounts.…
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Q: Class A is a subclass of B. The statement A myA = new A(); B myB = myA compiles successfully. This…
A: The above question is solved in step 2 :-
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A: Complete code with output is given below :
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A: What makes an abstract class different from other classes?
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Q: Create a program that exhibits inheritance. Procedure:
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Q: Create abstract class Pet , which is the abstract superclass of all animals.Declare a integer…
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Q: Write an abstract class, it can be anything well defined from the very basics.
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- Create an interface called Visible that includes two methods: makeVisible and makeInvisible. Both methods should take no parameters and should return a boolean result. Write a class Message that implements Visible and has two instance variables, a String text, and a boolean isVisible. In addition to the methods from the interface which you should implement, the class should have a constructor that initializes text from a parameter and sets isVisible to true, and a toString method that returns text if it is visible, and an empty string if it is not. Use Java.Create an interface called Player. The interface has an abstract method called play() that displays a message describing the meaning of “play” to the class. Create classes called Child, Musician, and Actor that all implement Player. Create an application that demonstrates the use of the classes. Save the files as Player.java, Child.java, Actor.java, Musician.java, and UsePlayer.java.subject: object-oriented programming in your library there are two types of books. one category is literature books and the second category is generals. litrature books have the authorID, authorname literature theme language, publisher, volumn,, yearofpubication, journal have attributes volumn, issue, publisher,yearofpublication,journalID, technical sponser. design a parent class books extend two classes literaturebooks and journel from parent class make constructor , setter, and getter
- 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.Design a program using a console application in java, named studentMarksReport that will print the final result obtained by a student with the weighting of each module. Make use of a class named Student that contains variables to store the student number, test result, assignment result and exam. Create a constructor that accepts the student number, test result, assignment result and the exam result as parameters and create get methods for the variables (UseJOptionePane to get variable from the user). Create a subclass called Student_Report that extends the Student class. The Student_Report overrides all getter methods and the constructor from Students. Write code for the print_report method which calculates each assessment weighting as follows: Assessment Weighting Test 25% Assignment 25% Exam 50%Design an interface named Swimmer with a void method named howToSwim (). Every class of aswimmer object must implement the Swimmer interface. Design a class named Fish. Write an equalsmethod for the Fish class; have it override the Object equals method. Two Fish are equal if they havethe same values of the instance variables vertabrates (a Boolean) and edible (a String).Design a class named Goldfish that extends Fish and implements Swimmer. Implement howToSwimto display the message It is swimming. Then design a class named Comet that extends Fish andimplements Swimmer. Implement howToSwim to display the message “It is swimming”.Draw a UML diagram that involves Swimmer, Goldfish, Comet and Fish. Write a testprogram that creates an array of five Fish objects. For each object in the array, display the result ofequals method with another object of the same array and invoke its howToSwim method if it isswimmer.
- Java code please 1. Appliance and TV by CodeChum Admin Create a class called Appliance. An appliance simply has a: brand (a text) a cost (a monetary value) a power status (ON or OFF) Power status, brand and cost should not be accessible out the class or its hierarchy of inheritance. It has one constructor that accepts a string and double for the brand and cost respectively (prints "Appliance Constructor" as well). It sets the power status to OFF. Apart from the getters, it also has two public methods, power(), and toString(). power() turns on the appliance if it is off, otherwise, if it is on, it turns the appliance off. toString() simple returns a String object representing the Appliance in this format ("Brand: xxxx, Cost: PhP xxxx.xx, Power: xx"). Create another class called Television. Television is an Appliance. It only has the following additional private attributes: type (whether Smart or Non-Smart) volume (0 - 100) channel (1 - 100) It should have the following…Choose necessary patters, draw the UML and code just company class methods on paper. A car company makes a car produce application. There are diffrerent types of models that the company builds as sedan and sport. Each model has some shared and distinguishing features. The object creation process should conduct by a central class. The second central class should not be created in the application.The class "Animal" has the following attributes: name, category, lifespan.Write a Python constructor method for the "Animal" class that takes values as parameters for all these attributes.Write only the constructor method, nothing else! pls use pyhton and answer fast thank u=)
- Which of the following does NOT apply to the strategy design pattern? It can change the behavior of a class at runtime It can eliminate conditional statements It can reduce the communication overhead between objects It provides an alternative to subclassing None of aboveCreate a class Car with parameters companyName, color, maxSpeed (Not more than 150) andcategory. Use appropriate data types and access specifiers. Use default constructor to create objectsof cars. (JAVA)in java Prepare an abstract class SpecialColor with one property the color name (String) and two methods, the first is the abstract void changeColor(), the other displays the name of the color (select the name of the method yourself). Prepare two classes that extend this class; the first one is called Yellow, the other Red. Both classes implement the abstract method; in the first class the name changes to yellow, in the other one to red. Also show the use of these classes in a new class!
