Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
6th Edition
ISBN: 9780134477367
Author: David J. Barnes, Michael Kolling
Publisher: PEARSON
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Chapter 11, Problem 9E
Program Plan Intro
To show the inheritance hierarchy for the implementation of classes Player and Monster in zuul project.
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Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
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- Programming to an implementation (e.g. concrete types like Circle, Square, Triangle in an inheritance hierarchy) helps build decoupled designs that are easy to update/change. True/ Falsearrow_forwardFind a good resource that explains inheritance, encapsulation, or polymorphism and share it with the class. Tell us in your own words how this helped you understand this concept.arrow_forwardImplement the following hierarchy shown in Figure 1, using Java Inheritance. The class Student is the parent class. Note that all the variables are private and hence the child classes can only use them through accessor and mutator methods.arrow_forward
- Create a Java project that shows the benefits of using generic types besides the examples from the activity. Summarize your answers and explanation for how your code examples work in 300 wordsarrow_forwardConsider the relationship between Unordered and Ordered lists. Is it possible that inheritance could be used to build a more efficient implementation? Implement this inheritance hierarchy. Provide the screenshot of your inheritance hierarchy in your paper. Your paper should be 1-2 pages in length (not including title and references pages)arrow_forwardExplore scenarios where you might need to implement a custom Comparator for a class that already implements the Comparable interface. Provide real-world examples for context.arrow_forward
- Justify your inclination toward using interfaces rather than abstract classes.arrow_forwardExplain how the items in the scene are connected to one another and the process of inheritance?arrow_forwardUSING JAVA: Enhance the Invoice-printing program by providing for two kinds of line items: One kind describes products that are purchased in a certain numerical quantities ( Such as “3 toasters”), another describes a fixed charge ( Such as “shipping $5.00”). Hint: Use inheritance. Produce a UML diagram of your modified implementation.arrow_forward
- Explain the purpose of inheritance. And then explain why the Circle class can inherit from the Ellipse class. This question seems pretty straight forward and I understand what inheritance is and why it is used. I am confused about the second part of the question because I know there is quite a bit of discussion about Circle and Ellipse being classed together in Python. Is it possible for the circle class to inherit from the ellipse class and why? That is what is confusing me.arrow_forwardDevelop an inheritance hierarchy based upon a Polygon class that has abstract methods area( ) and perimeter( ), and three instance variables of type int (number of dimensions), float (value of perimeter), and float (value of area). Your class must include a constructor method that initializes the int variable to an appropriate value. Implement classes Triangle, Quadrilateral, Pentagon, Hexagon, and Octagon extend this base class (Polygon), with the obvious meanings for the area( ) and perimeter( ) methods. Also implement classes, IsoscelesTriangle, EquilateralTriangle, Rectangle, and Square, that have the appropriate inheritance relationships. Finally, write a simple program (to test your classes), that allows users to create polygons of the various types and input their geometric dimensions, and the program then outputs their area and perimeter. Allow users to input polygons by specifying their number of dimensions and be able to test if two such polygons are similar ((by including…arrow_forwardsolve this question using java , also do not use inheritance (override) and aaraylist, just use string and classes and object (oop).arrow_forward
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