Imagine you're asked with creating a simple Java program for managing a LMS. Your program should have a Book class representing books in the library. Each book has attributes such as title, author, ISBN, and yearPublished.REQUIREMENTS::Define a Book class with private instance variables for title, author, ISBN, and yearPublished.Implement a constructor that initializes all these instance variables.Provide a default constructor that sets default values for title, author, ISBN, and yearPublished in case no values are provided during object creation.Implement getdata and displaydata methods for all instance variables.
Question
Imagine you're asked with creating a simple Java program for managing a LMS. Your program should have a Book class representing books in the library. Each book has attributes such as title, author, ISBN, and yearPublished.REQUIREMENTS::Define a Book class with private instance variables for title, author, ISBN, and yearPublished.Implement a constructor that initializes all these instance variables.Provide a default constructor that sets default values for title, author, ISBN, and yearPublished in case no values are provided during object creation.Implement getdata and displaydata methods for all instance variables.
Solution 1
Here is a simple Java program that meets your requirements:
public class Book {
// Private instance variables
private String title;
private String author;
private String ISBN;
private int yearPublished;
// Constructor that initializes all instance variables
public Book(String title, String author, String ISBN, int yearPublished) {
this.title = title;
this.author = author;
this.ISBN = ISBN;
this.yearPublished = yearPublished;
}
// Default constructor that sets default values
public Book() {
this.title = "Unknown";
this.author = "Unknown";
this.ISBN = "Unknown";
this.yearPublished = 0;
}
// Getters (getData methods)
public String getTitle() {
return this.title;
}
public String getAuthor() {
return this.author;
}
public String getISBN() {
return this.ISBN;
}
public int getYearPublished() {
return this.yearPublished;
}
// DisplayData methods
public void displayData() {
System.out.println("Title: " + this.title);
System.out.println("Author: " + this.author);
System.out.println("ISBN: " + this.ISBN);
System.out.println("Year Published: " + this.yearPublished);
}
}
This program defines a Book class with private instance variables for title, author, ISBN, and yearPublished. It implements a constructor that initializes all these instance variables and a default constructor that sets default values for these variables in case no values are provided during object creation. It also implements getData and displayData methods for all instance variables.
Solution 2
Here is a simple Java program for managing a Library Management System (LMS) with a Book class:
public class Book {
// Private instance variables
private String title;
private String author;
private String ISBN;
private int yearPublished;
// Constructor that initializes all instance variables
public Book(String title, String author, String ISBN, int yearPublished) {
this.title = title;
this.author = author;
this.ISBN = ISBN;
this.yearPublished = yearPublished;
}
// Default constructor that sets default values
public Book() {
this.title = "Unknown";
this.author = "Unknown";
this.ISBN = "Unknown";
this.yearPublished = 0;
}
// Getters (getData methods)
public String getTitle() {
return this.title;
}
public String getAuthor() {
return this.author;
}
public String getISBN() {
return this.ISBN;
}
public int getYearPublished() {
return this.yearPublished;
}
// DisplayData methods
public void displayData() {
System.out.println("Title: " + this.title);
System.out.println("Author: " + this.author);
System.out.println("ISBN: " + this.ISBN);
System.out.println("Year Published: " + this.yearPublished);
}
}
In this code, we have defined a Book class with private instance variables for title, author, ISBN, and yearPublished. We have implemented a constructor that initializes all these instance variables. We have also provided a default constructor that sets default values for title, author, ISBN, and yearPublished in case no values are provided during object creation. We have implemented getData methods (in the form of getters) and a displayData method for all instance variables.
Similar Questions
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