### Question 11**What is output?**```javapublic class Vehicle { protected String vehicleName; public void setName(String name) { vehicleName = name; } public String toString() { return vehicleName; }}public class Boat extends Vehicle { private int numEngines; public Boat(int num) { numEngines = num; } public String toString() { return super.toString() + " " + numEngines; }}Boat fastBoat = new Boat(2);fastBoat.setName("Firebird");System.out.println(fastBoat);```**Options:**- Firebird- Boat@f35a442b- Firebird 2- Syntax error### Explanation:This Java code consists of two classes: `Vehicle` and `Boat`, where `Boat` is a subclass of `Vehicle`. Let's break down the code:1. **Class Vehicle:** - **Protected String `vehicleName`:** This variable can be accessed within its class and by subclasses. - **Method `setName(String name)`:** Sets the `vehicleName` to the provided string `name`. - **Method `toString()`:** Returns the `vehicleName`.2. **Class Boat:** - **Private int `numEngines`:** This variable stores the number of engines of the boat. - **Constructor `Boat(int num)`:** Initializes `numEngines` with the provided integer `num`. - **Method `toString()`:** Overrides the `toString()` method of the `Vehicle` class. It returns a string that concatenates the result of `super.toString()`, which is the `vehicleName` from the `Vehicle` class, a space, and `numEngines`.3. **Object Creation and Method Calls:** - A `Boat` object `fastBoat` is created with `2` engines. - The `setName` method of the `Vehicle` class is called to set the `vehicleName` to `"Firebird"`. - `System.out.println(fastBoat)` implicitly calls the `toString()` method of the `fastBoat` object.Since `fastBoat`'s `toString()` method returns `vehicleName` + " " + `numEngines`, the output will be: **

In the given program the syntax error will come. here the argument in passed for the class Boat is 2…

public void setName(String name) { vehicleName = name; } public String toString() { return vehicleName; } ublic class Boat extends Vehicle { private int numEngines; public Boat(int num) { numEngines = num; } public String toString() { noturn Sunon toString() 11 11 numEnginos:

public void setName(String name) { vehicleName = name; } public String toString() { return vehicleName; } ublic class Boat extends Vehicle { private int numEngines; public Boat(int num) { numEngines = num; } public String toString() { noturn Sunon toString() 11 11 numEnginos:

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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