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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.
Create a thread in either a C or a Java program and run it. The thread should read a keyboard value "x" and exit from the code, or it can also use an "ESC" to exit. That is, the t
A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''''a''''-''''z'''') and
A target is the class that is being advised. The class can be a third party class or your own class to which you require to add your own custom behavior. By using the concepts of A
Very frequently when you write code, you desire to perform distinct actions for different decisions. You can employ conditional statements in your code to do this. In JavaScript
Explain different way of using thread? The thread could be executed by using runnable interface or by inheriting from the Thread class. The former is more advantageous, 'cau
Authentication is basically an identification step. Functionality used for J2EE security: Principal : An entity that may be authenticated and identified. Principal n
Differentiation between if statement and a switch statement ?
EJB 2.x is broadly adopted server side component architecture for J2EE. 1. EJB is a remote, distributed multi-tier system and allows protocols like IIOP, JRMP, and HTTP etc.
1. The purpose of this problem is to practice using generics. Create a generic class with a type parameter that simulates drawing an item at random out of a box. For exampl
What is numeric promotion? Numeric promotion is the conversion of a smaller numeric type to a larger numeric type, so that integer and floating-point operations may take place.
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