Structure of the Problem Requirements
In this project we will implement the complete code of library management system in Java.The project consists of seven Java classes include one main class. The Reader can asked to barrow a book, return a book or view book or reader can recommend a book to the library . Here is the complete source code of this project which help you in better understanding.
Source Code
Book.Java
package LEP.uzair.lms.library;
public class Book {
private String title;
private String author;
private String owner;
private String holder;
public Book(String temp_title,String temp_author,String temp_owner,String temp_holder){
author=temp_author;
title=temp_title;
owner=temp_owner;
holder=temp_holder;
}
Book(){
author=null;
title=null;
owner=null;
holder=null;
}
//getters
public String get_title(){
return title;
}
public String get_author(){
return author;
}
public String get_owner(){
return owner;
}
public String get_holder(){
return holder;
}
//setters
public void set_title(String temp_title){
title=temp_title;
}
public void set_author(String temp_author){
author=temp_author;
}
public void set_owner(String temp_owner){
owner=temp_owner;
}
public void set_holder(String temp_holder){
holder=temp_holder;
}
public void display(){
System.out.println("Book Details :\n^^^^^^^^^^^^^ \n\tAuthor : "+author+"\n\tName: "+title+"\n\tOwner:"+ owner+"\n\tHolder "+holder+"\n===============");
}
}
Library.Java
package LEP.uzair.lms.library;
import java.util.Scanner;
public class Library {
Book[] obj_book=new Book[100];
Reader[] obj_reader=new Reader[100];
PAuthor[] obj_author=new PAuthor[100];
int R_count=0;// R = reader
int A_count=0;// A = author
int B_count=2;// B = book
public Library(){
// for first time there will be two books in library
obj_book[0]=new Book();
obj_book[0].set_author("Uzair");
obj_book[0].set_title("Recommende System");
obj_book[0].set_holder("ali");
obj_book[1]=new Book();
obj_book[1].set_author("Asad");
obj_book[1].set_title("Web Programing");
}
public void start() {
@SuppressWarnings("resource")
Scanner input = new Scanner(System.in);
char YesOrNo = 'Y';
while (YesOrNo =='Y'){
System.out.print("\tQ:What do you want to do?\n\n");
System.out.print("\t\t1 : Rread a Book \n\n");
System.out.print("\t\t2 : Write a Book\n\n");
System.out.print("\t\t3 : View Books\n\n");
System.out.print("\t\t4 : Edit a Book\n\n");
System.out.println("\t\t\tYou Select : ");
String switchChoice=input.next();
switch (Integer.parseInt(switchChoice))
{
case 1: {
read();
break;
}
case 2: {
write();
break;
}
case 3: {
show_books(B_count);
break;
}
case 4: {
edit_book();
break;
}
default: {
System.out.println("Invalid Selection");
break;
}
}
System.out.println("\n\tDo u want to Do some thing Else \n\t\tY = yes\n\t\tN = No\n");
System.out.println("You Select : ");
YesOrNo =(input.next()).charAt(0);
if(Character.isLowerCase(YesOrNo )){
YesOrNo =Character.toUpperCase(YesOrNo );
}
}//End While
}// End Start()
private void edit_book() {
obj_author[A_count]=new PAuthor();
show_books(B_count);
System.out.print("\nTotal Books:"+B_count+"\nWhich book do you want to edit");
System.out.print("\nEnter above given Book Id");
@SuppressWarnings("resource")
Scanner input = new Scanner(System.in);
String temp_id=input.next();
int i=Integer.parseInt(temp_id);
i=i-1;
System.out.println(obj_book[i].get_author());
System.out.println("\nBook Editor:"+obj_author[A_count].get_name()+" Book author:"+obj_book[i].get_author() + "\n");
if((obj_author[A_count].get_name()).equals(obj_book[i].get_author())){
show_count();
obj_author[A_count].set_name(obj_book[i].get_author());
obj_book[i]=obj_author[A_count].new_book(obj_book[i]);
}else{
System.out.println("Author name Error");
}
}
private void write() {
if(A_count>=0 && B_count>=0){
//show_count();
obj_author[A_count]=new PAuthor();
obj_book[B_count]=new Book();
obj_book[B_count]=obj_author[A_count].new_book(obj_book[B_count]);
A_count=A_count+1;
B_count=B_count+1;
}else{
System.out.println("Books Or Author count has an Error");
}
}//End write()
private void read() {
obj_reader[R_count]=new Reader();
show_books(B_count);
System.out.print("\nTotal Books:"+B_count+"\nWhich book do you want to read");
System.out.print("\nEnter above given Book Id");
@SuppressWarnings("resource")
Scanner input = new Scanner(System.in);
String temp_id=input.next();
char YesOrNo = 'Y';
while (YesOrNo =='Y'){
System.out.print("\tQ:What do you want to do for reading?\n\n");
System.out.print("\t\t1 : Purchase a Book \n\n");
System.out.print("\t\t2 : Borrow a Book\n\n");
System.out.print("\t\t3 : Return a Book\n\n");
System.out.println("\t\t\tYou Select : ");
String switchChoice=input.next();
int i=Integer.parseInt(temp_id);
i=i-1;
switch (Integer.parseInt(switchChoice))
{
case 1: {
Purchase(obj_book[i],obj_reader[R_count]);
break;
}
case 2: {
Borrow(obj_book[i],obj_reader[R_count]);
break;
}
case 3: {
Return(obj_book[i],obj_reader[R_count]);
break;
}
default: {
System.out.println("Invalid Selection");
break;
}
}
System.out.println("\n\tDo u want to Read again\n\t\tY = yes\n\t\tN = No\n");
System.out.println("You Select : ");
YesOrNo =(input.next()).charAt(0);
if(Character.isLowerCase(YesOrNo )){
YesOrNo =Character.toUpperCase(YesOrNo );
}
}
R_count=R_count++;
}//End read()
private void Return(Book book, Reader reader) {
System.out.println("\nRequester:"+reader.get_name()+" Book Holder:"+book.get_holder() + "\n");
if((reader.get_name()).equals(book.get_holder())){
show_count();
reader.set_name(book.get_holder());
reader.return_book(book);
System.out.println("Return Book Successful");
}else if((book.get_holder()).equals(null)){
System.out.println("(!)-> Not Borrowed Yet ");
}else {
System.out.println("\tReturn Book Error\nRequester should be equal to Book Holder");
}
}
private void Borrow(Book book, Reader reader) {
if(book.get_holder()==null){
System.out.println(reader.get_name()+" now you have this book \""+ book.get_title()+"\"");
book.set_holder(reader.get_name());
System.out.println("\nBorrowing Book success\n");
}else if((reader.get_name()).equals(book.get_holder())){
System.out.println(reader.get_name()+" this book has been borrowed by you\n");
}else{
System.out.println(reader.get_name()+" this book has been borrowed by some one\n");
}
}//End Borrow()
private void Purchase(Book book, Reader reader) {
// System.out.println("\n "+reader.get_name()+" "+book.get_owner()+"");
if(book.get_owner()==null){
System.out.println("Your Selected Book: ");
book.display();
obj_reader[R_count].show_reader();
book=reader.purchase_book(book);
System.out.println(reader.get_name()+" now you have this book \""+ book.get_title()+"\"");
}else if((reader.get_name()).equals(book.get_owner())){
System.out.println(reader.get_name()+" this book has been purchased by you\n");
}else{
System.out.println(reader.get_name()+" this book has been purchased\n");
}
}//End Purchase()
public void show_books(int num){
for(int i=0;i<num;i++){
int temp=i+1;
System.out.println("Book Id:"+temp);
obj_book[i].display();
}
}//End show_books()
//////////////////////////////////////////* Test Functions *//////////////////////////////////////////////////
public void show_count(){
System.out.println("Count Author:"+A_count);
System.out.println("Count Book:"+B_count);
System.out.println("Count Reader:"+R_count);
}//End show_books()
}
/* public void get_books(){
}
public void new_book(){
}
public void sell_book(){
}
public void lend_book(){
}
public void tack_back_books(){
}
public void show_books(){
}
public void get_readers(){
}
public void show_readers(){
}*/
Person.Java
package LEP.uzair.lms.library;
import java.util.Scanner;
public class Person {
protected static String name;
Person(){
@SuppressWarnings("resource")
Scanner input= new Scanner(System.in);
System.out.println("Enter Your Name:");
String temp_name=input.next();
name=temp_name;
}
public void set_name(String temp_name){
//Scanner input= new Scanner(System.in);
//System.out.println("Enter Your Name:");
//String temp_name=input.next();
name=temp_name;
}
public String get_name(){
return name;
}
public String who_are_you(){
String temp="I am :" +name;
return temp;
}
}
PAuthor.Java
package LEP.uzair.lms.library;
import java.util.Scanner;
public class PAuthor extends Person{
PAuthor(){
super();
System.out.println("Author name is : "+name);
}
public Book new_book(Book obj_book){
@SuppressWarnings("resource")
Scanner input= new Scanner(System.in);
System.out.println("Enter Book Title:");
String temp_title=input.next();
obj_book.set_title(temp_title);
obj_book.set_author(name);
return obj_book;
}
public String who_are_you(Book obj_book){
String temp="I am Author of this book"+obj_book.get_title()+"my nmae is :" +name;
return temp;
}
}
Reader.Java
package LEP.uzair.lms.library;
public class Reader extends Person {
Reader(){
super();
System.out.println("Reader name is : "+name);
}
public Book purchase_book(Book obj_book){
obj_book.set_owner(name);
System.out.println("\n Purchase Book action successfull for : "+name);
return obj_book;
}
public void borrow_book(Book obj_book){
obj_book.set_holder(name);
System.out.println("\nBorrow Book action successfull for : "+name);
}
public void return_book(Book obj_book){
obj_book.set_holder("null");
System.out.println("\nReturn Book action successfull for : "+name);
}
public void show_reader(){
System.out.println("Reader name is : "+name);
}
public String who_are_you(Book obj_book){
String temp="I am Reader of this book"+obj_book.get_title()+"my nmae is :" +name;
return temp;
}
}
Start.Java
package LEP.uzair.lms.start;
import java.util.Scanner;
import LEP.uzair.lms.library.Library;
public class Start {
public static void StartHms() {
// TODO Auto-generated method stub
int c=0;
@SuppressWarnings("resource")
Scanner input = new Scanner(System.in);
char YesOrNo = 'Y';
while (YesOrNo =='Y'){
System.out.print("\t\t ============================\n");
System.out.print("\t\t Welcome To Library Managment \n");
System.out.print("\t\t Software \n");
if(c==0){
c++;
}else{
System.out.print("\t\t Again\n");
}
System.out.print("\t\t ============================\n");
Library obj_lib=new Library();
obj_lib.start();
/*
Book obj_book=new Book("Numarical Analysis","Albert","Bruce","uzair");
obj_book.display();
*/
System.out.println("\n\tDo u want to Continue \n\t\tY = Continue Again\n\t\tN = Exit\n");
System.out.println("You Select : ");
YesOrNo =(input.next()).charAt(0);
if(Character.isLowerCase(YesOrNo )){
YesOrNo =Character.toUpperCase(YesOrNo );
}
}//End While
}
}
Mymain.Java
package LEP.uzair.lms.main;
import LEP.uzair.lms.start.Start;
public class MyMain {
public static void main(String[] args) {
//Static Function Demonstration
Start.StartHms();
}
}
Output of the Program
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| Library Management System Project in Java |
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| Library Management System Project in Java |
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| Library Management System Project in Java |
Asad Niazi is Software Engineer , Programmer, Web Developers and a young mentor of Tech Solutions Desk and Blogging Solutions . Asad Love to writes about Technology, Programming, Blogging and make money online.
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