Question

Define a class called Library with the following description:
Instance variables/data members:
Int acc_num – stores the accession number of the book

String title – stores the title of the book

String author – stores the name of the author

Member Methods:
(i) void input() – To input and store the accession number, title and author.

(ii)void compute() – To accept the number of days late, calculate and display the fine charged at the rate of Rs.2 per day.

(iii) void display() To display the details in the following format: Accession Number Title Author.

Write a main method to create an object of the class and call the above member methods.

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Code

				
					
import java.util.Scanner;

public class Library
{
    int acc_num;
    String title;
    String author;
    Scanner sc=new Scanner(System.in);
    public Library()
    {
        acc_num=0;
        title="";
        author="";
    }

    public void input()
    {
        System.out.print("Enter accession number: "); 
        acc_num =sc.nextInt();
        sc.nextLine();
        System.out.print("Enter title: "); 
        title =  sc.nextLine();
        System.out.print("Enter author: ");
        author = sc.nextLine(); 

    } 

    public void compute()
    {
        System.out.print("Enter number of days late: "); 
        int late = sc.nextInt();
        int fine = 2 * late;
        System.out.println("Fine is Rs " + fine); 
    } 

    public void display() 
    {
        System.out.println("Accession Number\tTitle\tAuthor"); 
        System.out.println(acc_num + "\t" + title + "\t" + author);
    }

    public static void main(String[] args) 
    {
        Library ob1 = new Library();
        ob1.input(); 
        ob1.compute();
        ob1.display();
    }
}