Big Java, Binder Ready Version: Early Objects
6th Edition
ISBN: 9781119056447
Author: Cay S. Horstmann
Publisher: WILEY
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Chapter 9.3, Problem 14SC
Program Plan Intro
Method Overriding:
- Overriding is a feature that allows a child class or subclass to specifically implement a method that already provided by one of its parent classes or super classes.
- If the method of the subclass has name, parameters and return type as same as the method in the super class, then the method in the subclass is said to override the method in the super-class.
“super” keyword:
- The keyword “this” is a reference variable that used to refer to the parent class objects.
- The “super” keyword is used in the following contexts:
- Use of keyword “super” with variables:
- This situation comes when the base class and derived class has the same data members.
- In this situation, ambiguity occurs for the Java Virtual Machine.
- For avoiding ambiguity, the keyword “super” is used as reference to the variables of super class.
- Use of keyword “super” with methods:
- The keyword “super” is used to call methods of base class.
- When the base class and derived class has same methods, the keyword “super” is used to refer to the methods of base class. Through this ambiguity is resolved.
- Use of keyword “super” with constructors:
- The keyword “super” can be used to access the constructors of base class.
- Use of keyword “super” with variables:
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Big Java, Binder Ready Version: Early Objects
Ch. 9.1 - Consider classes Manager and Employee. Which...Ch. 9.1 - What are the inheritance relationships between...Ch. 9.1 - Prob. 3SCCh. 9.1 - Prob. 4SCCh. 9.1 - Prob. 5SCCh. 9.2 - Prob. 6SCCh. 9.2 - Suppose the class Employee is declared as...Ch. 9.2 - Prob. 8SCCh. 9.2 - In the Manager class, provide the method header...Ch. 9.2 - Prob. 10SC
Ch. 9.3 - What is wrong with the following implementation of...Ch. 9.3 - What is wrong with the following implementation of...Ch. 9.3 - Look again at the implementation of the addChoice...Ch. 9.3 - In the Manager class of Self Check 7, override the...Ch. 9.3 - In the Manager class of Self Check 9, override the...Ch. 9.4 - Assuming SavingsAccount is a subclass of...Ch. 9.4 - Prob. 17SCCh. 9.4 - Declare an array quiz that can hold a mixture of...Ch. 9.4 - Prob. 19SCCh. 9.4 - Prob. 20SCCh. 9.5 - Prob. 21SCCh. 9.5 - Will the following code fragment compile? Will it...Ch. 9.5 - Prob. 23SCCh. 9.5 - Prob. 24SCCh. 9.5 - Prob. 25SCCh. 9 - Prob. 1RECh. 9 - Identify the superclass and subclass in each of...Ch. 9 - Prob. 3RECh. 9 - Which methods does the ChoiceQuestion class...Ch. 9 - Which methods does the SavingsAccount class in How...Ch. 9 - Prob. 6RECh. 9 - Suppose the class Sub extends the class Sandwich....Ch. 9 - Draw an inheritance diagram that shows the...Ch. 9 - Prob. 9RECh. 9 - What inheritance relationships would you establish...Ch. 9 - How does a cast such as (BankAccount) x differ...Ch. 9 - Prob. 12RECh. 9 - Implement a subclass of BankAccount called...Ch. 9 - Implement a subclass of BankAccount called...Ch. 9 - Reimplement the CheckingAccount class from How To...Ch. 9 - Add a class NumericQuestion to the question...Ch. 9 - Prob. 5PECh. 9 - Prob. 6PECh. 9 - Add a class AnyCorrectChoiceQuestion to the...Ch. 9 - Prob. 8PECh. 9 - Prob. 10PECh. 9 - Prob. 11PECh. 9 - Prob. 12PECh. 9 - Prob. 13PECh. 9 - Prob. 14PECh. 9 - Prob. 15PECh. 9 - Prob. 16PECh. 9 - Prob. 17PECh. 9 - Prob. 1PPCh. 9 - Prob. 2PPCh. 9 - Prob. 3PPCh. 9 - Prob. 4PPCh. 9 - Prob. 5PPCh. 9 - Prob. 6PPCh. 9 - Prob. 7PPCh. 9 - Prob. 8PP
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Introduction to Classes and Objects - Part 1 (Data Structures & Algorithms #3); Author: CS Dojo;https://www.youtube.com/watch?v=8yjkWGRlUmY;License: Standard YouTube License, CC-BY