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24) Assuming that Dog is a subclass of Pet, Is the following code valid?¶ Pet p = new Dog(); System.out.println(p.fetch());

24) Assuming that Dog is a subclass of Pet, Is the following code valid?¶ Pet p = new Dog(); System.out.println(p.fetch());

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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How do you do this? JAVA
**Question 24:** **Assuming that Dog is a subclass of Pet, is the following code valid?** ```java Pet p = new Dog(); System.out.println(p.fetch()); ``` *Explanation:* The code snippet provided is an example of polymorphism in Java, where a superclass reference (Pet) is used to refer to a subclass object (Dog). The code checks if a method from the subclass can be accessed using a superclass reference.
Transcribed Image Text:**Question 24:** **Assuming that Dog is a subclass of Pet, is the following code valid?** ```java Pet p = new Dog(); System.out.println(p.fetch()); ``` *Explanation:* The code snippet provided is an example of polymorphism in Java, where a superclass reference (Pet) is used to refer to a subclass object (Dog). The code checks if a method from the subclass can be accessed using a superclass reference.
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