Design and implement a class called Bulb that represents a light bulb that can be turned on and off. Initially, a Bulb object will be off. Create a driver class called Lights, whose main method instantiates and turns on some Bulb objects.
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Design and implement a class called Bulb that represents a light bulb that can be turned on and off. Initially, a Bulb object will be off. Create a driver class called Lights, whose main method instantiates and turns on some Bulb objects.
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- java You are part of a team writing classes for the different game objects in a video game. In this assessment you are given a superclass (Human.java), two subclasses (Warrior.java and Wizard.java) and a test application (TestGameObjects.java). Both the Warrior and the Wizard classes need to be able to calculate stealth. This needs to be done in the method getStealth. This method has an integer parameter (dexterity) and returns an integer. Refer to the test application to see how the method is used. The Warrior and Wizard classes calculate stealth differently: The Warrior's stealth is equal to dexterity times strength (dexterity * strength) while the Wizard's stealth is equal to three times dexterity times intelligence (3 * dexterity * intelligence). You need to write an interface with the method getStealth, and then modify the superclass and subclasses to implement this interface. You also need to test the validity of the object ID. The object ID must consist of the character 'W'…JAVA A company needs to develop an object-oriented library with a few Java classes forthe following task. Overall, they want the classes to model the geometric shapes and calculatetheir areas. These geometric shapes include Square, Rectangle, Circle, and Triangle.The above four shapes share common attributes such as name and color. The area of a shapecan be calculated by using a method area( ) which can be implemented only until the exactshape is known. Different shapes need a different area( ) method.1) Design a Java abstract class called Shape to model this situation, which will serve as a parentclass. Write its code;2). All the above shapes should be drawable by the users by calling the draw( ) method.Different shapes are drawn differently. You should design a Java interface named Drawableto provide this method for the shape classes to implement in their own ways. Write its code;3). Write the code for the four classes: Square, Rectangle, Circle, and Triangle.Note:• You should decide…Q# A program that has no graphical user interface and only takes input through the command line only has a model and a controller. It does not have a view. The answer: is FALSE. Please explain with example. Q# What is NOT an effect of the SOLID principles? The answer: A high-level class depends on specific low-level classes and not interfaces. Please explain why. Q# Assume you are considering writing a method and are deciding what should happen when given input that is outside of perfect input. Which of the following is not a way to handle this? Answer: Use better JUnit testing. Subject: Java Programming
- Write and document the definition for the Product class. The Product class represents an item that would appear for sale on a Web site or in a department store (like a toaster). Each Product object has three instance variables: description, productNumber and price. The class has one constructor that takes three parameters in the order productNumber, description and price. The class has one accessor method named getCost(int qty) which returns the price for qty items of the Product. The class has two mutator methods—setPrice() and setDescription()—that modify the corresponding instance variables. The class has a toString() method that returns the Product as a String in the form: 34567: Small Toaster, $ 17.95. Note: use concatenation to construct the returned string. Do not use the String.format() method to format the returned value.Write a program which controls a metro train and that keeps track of stations and who gets on and off. write a short description of how the code is designed. Design and implement a class called train, which has at least the following: At least the following attributes (you can include others): metroID stationNum which keeps track of the station that the train is at. iii. direction which keeps track of the direction the train is travelling in. passTotal which keeps track of the number of passengers currently on the train. A default constructor which sets the metroID to a random number between 1 and 1000, the station number to 0, the direction (int), and the passTotal to 0 (train is empty). A constructor with one parameter; the parameter is the metro id. The constructor assigns the passed integer to the metroID attribute; the rest of the attributes are set as described in the default constructor. Accessor methods for each attributes. Mutator methods for each attributes.…Design a class Parallelogram that contains two private data members: - double length, - double height. Parallelogram class should also have following public methods: - parameterized constructor, - a method to calculate area of parallelogram. Design another class Rectangle that inherits from Parallelogram (since a Rectangle is-a Parallelogram). Class Rectangle should have the following public members: - parameterized constructor, - a method to calculate perimeter, - a method to tell if the Rectangle object is a Square. Develop the main function to fully test these two classes. Note: 1. please use multiple files (separate compilation) 2. length and height should be protected members in the base class, as you need them to calculate perimeter of a rectangle.
- Define the Circle2D class that contains: Two double data fields named x and y that specify the center of the circle with get A data field radius with a get A no-arg constructor that creates a default circle with (0, 0) for (x, y) and 1 for radius. A constructor that creates a circle with the specified x, y, and radius. A method getArea() that returns the area of the circle. A method getPerimeter() that returns the perimeter of the circle. A method contains(double x, double y) that returns true if the specified point (x, y) is inside this circle. See Figure 10.14(a). A method contains(Circle2D circle) that returns true if the specified circle is inside this circle. See Figure 10.14(b). A method overlaps(Circle2D circle) that returns true if the specified circle overlaps with this circle. See the figure below. (a) (b) (c) Figure 10.14 (a) A point is inside the circle. (b) A circle is inside another circle. (c) A circle overlaps another circle. Draw…Write a program which controls a metro train and that keeps track of stations and who gets on and off. Design and implement a class called train, which has at least the following: At least the following attributes (you can include others): metroID stationNum which keeps track of the station that the train is at. iii. direction which keeps track of the direction the train is travelling in. passTotal which keeps track of the number of passengers currently on the train. A default constructor which sets the metroID to a random number between 1 and 1000, the station number to 0, the direction (int), and the passTotal to 0 (train is empty). A constructor with one parameter; the parameter is the metro id. The constructor assigns the passed integer to the metroID attribute; the rest of the attributes are set as described in the default constructor. Accessor methods for each attributes. Mutator methods for each attributes. nextStation(int lastStation) which determines the next…Create a Class runner that will only run the program and Create another Class to input your program.
- Design a class named Rectangle to represent a rectangle. The class must have the following: • double data fields named width and height. The default values are 1 for both width and height A no-argument constructor that creates a default bag. A constructor that creates a rectangle with the specified width and height A getParameter() method to return the perimeter. • A getArear() method to return the area of the Rectangle. Create two Rectangle objects. One with width 4.0 and height 10.0. The other object has width 6.3 and height 10.5.In this Assignment we will build a simple graphical application that is responsive and that uses basic widgets and demonstrates event handling. The screen shot below shows the expected result In this Assignment we will build a simple graphical application that is responsive and that uses basic widgets and demonstrates event handling. The screen shot below shows the expected result You must not use any other library except tkinter. Your code must run on a standard machine. Your code must be written as a class that inherits from Tk and the application must resize gracefully. The apps must start in a usable state i.e. all the relevant values of the input widget must be set. So if you click ok when the app starts, then you should get the pop-up message shown in the last page. The reset button must set the app to the initial start state. Widget must align vertically as well as horizontally with their matching widget Application not designed as a class. Application not responsive: The…In a Test class, an object of a Monitor is created as follow: Monitor myMonitor = new Monitor ("LG", 23, 35): Where LG is the manufacturer and 23 is the size of the monitor, and 35 is the price Write the code of how the constructor will look like in Monitor dass use (java)