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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.
Determine the meaning of finalize When a finalize method is defined in a class, Java run time calls finalize() whenever it's about to recycle an object of t
What is JAR archives? JAR archives are ZIP archives along with a different extension. They contain a hierarchy of files and directories. In spirit a JAR file can take the place
Service Oriented Architecture Service Oriented Architecture (SOA) is an evolution of the fundamentals governing a component based development. Component based development gives
The process of applying aspects to a target object to form a new proxy object is known as Weaving. The aspects are woven into the target object at the verified join points.
memory allocation of local variable
Is it right that garbage collection guarantee that a program will not run out of memory?
(Login User Control) Create a UserControl called LoginPasswordUserControl that contains a Label (loginLabel) that displays string "Login:", a TextBox (loginTextBox), where the user
What are Access Specifiers available in Java? Java has four access specifiers, which are enlisted below: Public: public methods, classes and fields can be accessed by ever
Java is Object oriented programme language Java is comprehensively OOP language with robust memory system Memory errors largely disappear due to safe pointers and garbage c
JavaServer Faces(JSF) is a framework for building web-based user interface in Java. Unlike Swing, JSF provides widgets like buttons, hyperlinks, checkboxes, etc. in dissimilar ways
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