Define a class called Library with the following description:
Instance Variables/Data Members:
int accNum — 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:
Accession Number Title Author
Write a main method to create an object of the class and call the above member methods.
import java.util.Scanner;
public class Library
{
private int accNum;
private String title;
private String author;
void input() {
Scanner in = new Scanner(System.in);
System.out.print("Enter book title: ");
title = in.nextLine();
System.out.print("Enter author: ");
author = in.nextLine();
System.out.print("Enter accession number: ");
accNum = in.nextInt();
}
void compute() {
Scanner in = new Scanner(System.in);
System.out.print("Enter number of days late: ");
int days = in.nextInt();
int fine = days * 2;
System.out.println("Fine = Rs." + fine);
}
void display() {
System.out.println("Accession Number\tTitle\tAuthor");
System.out.println(accNum + "\t\t" + title + "\t" + author);
}
public static void main(String args[]) {
Library obj = new Library();
obj.input();
obj.display();
obj.compute();
}
}
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.