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(CarbonFootprint Interface: Polymorphism) Using interfaces, as you learned in this chapter, you can specify similar behaviors for possibly disparate classes. Governments and companies worldwide are becoming increasingly concerned with carbon footprints (annual releases of carbon dioxide into the atmosphere) from buildings burning various types of fuels for heat, vehicles burning fuels for power, and the like. Many scientists blame these greenhouse gases for the phenomenon called global warming. Create three small classes unrelated by inheritance-classes Building, Car and Bicycle. Write an interface ICarbonFootprint with aGetCarbonFootprint method. Have each of your classes implement that interface, so that its GetCarbonFootprint method calculates an appropriate carbon footprint for that class (check out a few websites that explain how to calculate carbon footprints). Write an application that creates objects of each of the three classes, places references to those objects inList, then iterates through the List, polymorphically invoking each object's GetCarbonFootprint method.
The "http protocol" is a stateless response or request based protocol. You may contain the state information between different page requests as given below: HTTP Sessions are
The following set of short questions will focus on getting you familiar with JavaScript functions. All functions and testing should appear in a single XHTML 1.0 Strict page. All
writing a program to find common friends with the use of array
Implement Queues / Linked List Project Description: In this project, two kinds of queue are implemented: LinkedQueue implements FIFOQueueInterface { .... } and LLQueueItr imp
Preventing Applet Based Social Engineering Attacks To help avoid this, Java applet windows are specifically labeled as such along with an ugly bar that says: "Warning: Applet W
Consider the following Java definition of an integer list class. class IntegerList { private int[] list = new int[200]; private int size = 0; public boolean append(int value) {
Write a program called Power that displays the positive powers of 2. When the user enters the exponent at a prompt, the program displays 2 to that power. The program halts when the
Write names of the DoS attack's phases? DoS (Denail of service): DoS attach has in total 3 kinds of phases and below they are listed: 1. Search 2. Arm 3. Attack
What are the different scopes for Java variables? The scope of a Java variable is explained by the context in which the variable is declared. Therefore a java variable can have
How many bits are used to show Unicode, ASCII, UTF-16, and UTF-8 characters? Unicode requires 16 bits and ASCII require 7 bits although the ASCII character set uses only 7 bits
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