8. OOPS Theory #6public class Car {public void horn() {System.out.println("Horn horn");}}public class Ferrari extends Car {public void horn() {System.out.println("Ferarriiiiii");}}public static void main(String[] args) {Ferrari ferrari = new Car();ferrari.horn();}Pick ONE optionHorn hornFerarriiiiCannot compileRuntime exceptionClear Selection9. OOPS Theory #7In Java, we can achieve the abstraction by creating the blueprint of an object and only have abstract methods. What do we call this?Pick ONE optionInterfaceEncapsulationInstanceProtectedClear Selection 10. OOPS Theory #8public class Car {public void horn() {System.out.println("Horn Car");}}public class Ferrari extends Car {private int wheel = 4;public void horn() {System.out.println("Ferarriiiiii");}/*** Getter method for property wheel.* @return property value of wheel*/public int getWheel() {return wheel;}/*** Setter method for property wheel.* @param wheel value to be assigned to property wheel*/public void setWheel(int wheel) {this.wheel = wheel;}public static void main(String[] args) {Ferrari fl = new Ferrari();Ferrari f2 = f1;fl.setWheel (3);System.out.println(f2.getWheel());System.out.println(f1.getWheel());}What is the output of this block of code?Pick ONE option433433Cannot compileClear SelectionContinue

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public class Car { public void horn() { System.out.println("Horn horn"); } } public class Ferrari extends Car { public void horn() { System.out.println("Ferarriiiiii"); } public static void main(String[] args) { Ferrari ferrari = new Car(); ferrari.horn(); } Pick ONE option Horn horn Ferarriii Cannot compile Runtime exception Clear Selection

public class Car { public void horn() { System.out.println("Horn horn"); } } public class Ferrari extends Car { public void horn() { System.out.println("Ferarriiiiii"); } public static void main(String[] args) { Ferrari ferrari = new Car(); ferrari.horn(); } Pick ONE option Horn horn Ferarriii Cannot compile Runtime exception Clear Selection

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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Concept explainers

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:

Question

8. OOPS Theory #6
public class Car {
public void horn() {
System.out.println("Horn horn");
}
}
public class Ferrari extends Car {
public void horn() {
System.out.println("Ferarriiiiii");
}
}
public static void main(String[] args) {
Ferrari ferrari = new Car();
ferrari.horn();
}
Pick ONE option
Horn horn
Ferarriiii
Cannot compile
Runtime exception
Clear Selection
9. OOPS Theory #7
In Java, we can achieve the abstraction by creating the blueprint of an object and only have abstract methods. What do we call this?
Pick ONE option
Interface
Encapsulation
Instance
Protected
Clear Selection

10. OOPS Theory #8
public class Car {
public void horn() {
System.out.println("Horn Car");
}
}
public class Ferrari extends Car {
private int wheel = 4;
public void horn() {
System.out.println("Ferarriiiiii");
}
/**
* Getter method for property wheel.
* @return property value of wheel
*/
public int getWheel() {
return wheel;
}
/**
* Setter method for property wheel.
* @param wheel value to be assigned to property wheel
*/
public void setWheel(int wheel) {
this.wheel = wheel;
}
public static void main(String[] args) {
Ferrari fl = new Ferrari();
Ferrari f2 = f1;
fl.setWheel (3);
System.out.println(f2.getWheel());
System.out.println(f1.getWheel());
}
What is the output of this block of code?
Pick ONE option
43
34
33
Cannot compile
Clear Selection
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