Answered: Polymorphism in Java In the class…

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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Question

Polymorphism in Java

In the class “Phone”, there is a method call() which in default prints “Calling Emergency services…”. Override this method by accepting a string called number. Accept for a number as input. If input is 0, call the default method.

Inputs

1. A string

1234567

Sample Output

Enter number: 1234567

Calling number 1234567...

1. Polymorphism Practice I
by CodeChum Admin
In the class "Phone", there is a method call() which in default prints "Calling Emergency
services...: Override this method by accepting a string called number. Accept for a
number as input. If input is 0, call the default method.
Inputs
1. A string
1234567
Sample Output
Enter number: 1234567
Calling number 1234567...
Main.java +
1
2
3 class Phone (
3
Ġ
import java.util.Scanner;
7
7
public void call(){
System.out.println("Calling Emergency services...");
9
9 class Main {
10.
11
12
13 }
public static void main(String[] args) {
}
Java
Test Cases
Test Cases
O Test Case 1
Your Output
No Output
Expected Output
Enter number: 1234567
Calling number 1234567...
Show Differences
O Test Case 2 Hidden
O Test Case 3 Hidden
a

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