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Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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1. First, create a superclass called 'Animal' that has two fields" 'name' and 'species. Then, create a subclass called 'Dog' that inherits from the 'Animal' class and has a method called 'bark' that prints the string "Woof!" to the console. Create a main method that creates an instance of the 'Dog' class and calls its 'bark' method using polymorphism. Modify the 'Animal' class to have a method called 'makeSound' that is overridden by the 'Dog' class to print the string "Woof!" to the console.
Transcribed Image Text:1. First, create a superclass called 'Animal' that has two fields" 'name' and 'species. Then, create a subclass called 'Dog' that inherits from the 'Animal' class and has a method called 'bark' that prints the string "Woof!" to the console. Create a main method that creates an instance of the 'Dog' class and calls its 'bark' method using polymorphism. Modify the 'Animal' class to have a method called 'makeSound' that is overridden by the 'Dog' class to print the string "Woof!" to the console.
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