Question 18 What is output? public abstract class People { protected String name; protected int age; public abstract void PrintInfo(); public void PrintInformation() { System.out.println("In Base Class People"); } } public class Teacher extends People { private int experience; public void PrintInfo() { System.out.println("In Child Class Teacher"); } } public class Principal extends Teacher { public void PrintInformation() { System.out.println("In Child Class Principal"); } public static void main(String args[]) { Principal tim; tim = new Principal(); tim.PrintInfo(); } } Error: Compiler error In Base Class People O In Child Class Teacher O In Child Class Principal

Question 18 What is output? public abstract class People { protected String name; protected int age; public abstract void PrintInfo(); public void PrintInformation() { System.out.println("In Base Class People"); } } public class Teacher extends People { private int experience; public void PrintInfo() { System.out.println("In Child Class Teacher"); } } public class Principal extends Teacher { public void PrintInformation() { System.out.println("In Child Class Principal"); } public static void main(String args[]) { Principal tim; tim = new Principal(); tim.PrintInfo(); } } Error: Compiler error In Base Class People O In Child Class Teacher O In Child Class Principal

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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OOPs

In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.

Constructor

The easiest way to think of a constructor in object-oriented programming (OOP) languages is:

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