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kishanrajput23kishanrajput23
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Merge pull request #307 from singodiyashubham87/add-new-project
add library app in java
2 parents a50c33b + cf5e05d commit 364acfa

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‎LibraryApp/libraryApp/Book.java‎

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package libraryApp;
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public class Book {
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private int isbn;
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private String title;
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private String author;
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private String genre;
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private int quantity;
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private int checkedOut;
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private int checkedIn;
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//Constructor for book object
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public Book(int isbn, String title, String author, String genre, int quantity, int checkedOut) {
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this.isbn = isbn;
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this.title = title;
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this.author = author;
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this.genre = genre;
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this.quantity = quantity;
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this.checkedOut = checkedOut;
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this.checkedIn = quantity-checkedOut;
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}
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public int getCheckedIn() {
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return checkedIn;
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}
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public void setCheckedIn(int checkedIn) {
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this.checkedIn = checkedIn;
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}
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public void setIsbn(int isbn) {
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this.isbn = isbn;
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}
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public void setTitle(String title) {
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this.title = title;
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}
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public void setAuthor(String author) {
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this.author = author;
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}
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public void setGenre(String genre) {
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this.genre = genre;
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}
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public void setQuantity(int quantity) {
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this.quantity = quantity;
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}
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public void setCheckedOut(int checkedOut) {
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this.checkedOut = checkedOut;
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}
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//Getter Methods
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public int getIsbn() {
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return isbn;
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}
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public String getTitle() {
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return title;
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}
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public String getAuthor() {
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return author;
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}
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public String getGenre() {
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return genre;
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}
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public int getQuantity() {
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return quantity;
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}
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public int getCheckedOut() {
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return checkedOut;
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}
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}
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‎LibraryApp/libraryApp/BookRepository.java‎

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package libraryApp;
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import java.util.ArrayList;
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public class BookRepository {
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private ArrayList<Book> books = new ArrayList<>();
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private int booksFound = 0;
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//Constructor to initialize books
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public BookRepository(){
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books.add(new Book(253910,"Pride and Prejudice C", "Jane Austen", "Love",10,7));
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books.add(new Book(391520,"Programming in ANSI C", "E. Balagurusamy", "Educational",15,10));
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books.add(new Book(715332,"Shrimad Bhagavad Gita", "Krishna Dvaipayana", "Motivational",20,18));
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books.add(new Book(935141,"Java: The Complete Reference", "Herbert Schildt", "Educational",12,9));
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books.add(new Book(459901,"It", "Stephan King", "Horror",7,5));
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books.add(new Book(855141,"Disneyland", "Mickey & Minnie", "Love",10,3));
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}
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//Searching books by Title Keyword
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public void searchByTitle(String title) {
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booksFound = 0;
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for(Book book : books) {
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String bookTitle = book.getTitle();
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if(bookTitle.toLowerCase().contains(title.toLowerCase())) {
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bookDetails(book);
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booksFound++;
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}
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}
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System.out.printf("\n%d Book%s Found.\n",booksFound,booksFound>1?"s":"");
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return;
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}
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//Searching books by ISBN Number
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public void searchByISBN(int isbn) {
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booksFound = 0;
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for(Book book : books) {
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if(book.getIsbn()==isbn) {
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bookDetails(book);
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booksFound++;
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break;
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}
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}
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System.out.printf("\n%d Book%s Found.\n",booksFound,booksFound>1?"s":"");
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return;
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}
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//Searching books by Genre
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public boolean searchByGenre(String genre){
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booksFound = 0;
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for(Book book : books) {
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String bookGenre = book.getGenre();
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if(bookGenre.toLowerCase().equals(genre.toLowerCase())) {
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bookDetails(book);
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booksFound++;
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}
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}
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System.out.printf("\n%d Book%s Found.\n",booksFound,booksFound>1?"s":"");
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if(booksFound>0)
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return true;
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else
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return false;
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}
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// Display Book Details
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public void bookDetails(Book book) {
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System.out.println("\n+> Book details: \n");
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System.out.println("\tTitle: "+book.getTitle()+"\n\tAuthor: "+ book.getAuthor()+"\n\tGenre: "+book.getGenre()+"\n\tISBN: "+book.getIsbn()+"\n\tQuantity: "+book.getQuantity()+"\n\tChecked Out: "+String.valueOf(book.getCheckedOut())+"\n\tAvailable: "+String.valueOf(book.getQuantity()-book.getCheckedOut()));
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}
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//Searching for ISBN number for checkIn and checkOut
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public int searchISBN(int isbn) {
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for(Book book:books)
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if(book.getIsbn()==isbn)
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return 1;
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return 0;
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}
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//withdrawing book
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public boolean getBook(int isbn) {
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for(Book book: books) {
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if(book.getIsbn()==isbn) {
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if((book.getQuantity()-book.getCheckedOut())>0) {
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book.setCheckedOut(book.getCheckedOut()+1);
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return true;
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}
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}
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}
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return false;
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}
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//submitting book
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public boolean submitBook(int isbn) {
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for(Book book: books) {
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if(book.getQuantity()>book.getCheckedIn()) {
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book.setCheckedOut(book.getCheckedOut()-1);
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return true;
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}
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}
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return false;
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}
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//Showing status of book
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public void bookStatus(int isbn) {
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for(Book book: books) {
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if(book.getIsbn()==isbn) {
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bookDetails(book);
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break;
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}
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}
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}
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}

‎LibraryApp/libraryApp/LibraryApp.java‎

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package libraryApp;
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public class LibraryApp {
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BookRepository repo = new BookRepository();
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public void findByTitle(String title) {
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repo.searchByTitle(title);
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return;
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}
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public void findByISBN(int isbn) {
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repo.searchByISBN(isbn);
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return;
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}
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public boolean findByGenre(String genre) {
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if(repo.searchByGenre(genre))
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return true;
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else
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return false;
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}
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public int findISBN(int isbn) {
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return repo.searchISBN(isbn);
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}
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public boolean withdrawBook(int isbn) {
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return repo.getBook(isbn);
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}
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public boolean depositBook(int isbn) {
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return repo.submitBook(isbn);
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}
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public void getStatus(int isbn) {
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repo.bookStatus(isbn);
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}
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}

‎LibraryApp/libraryApp/Main.java‎

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package libraryApp;
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import java.util.Scanner;
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public class Main{
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static Scanner scan = new Scanner(System.in);
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static LibraryApp app = new LibraryApp();
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public static void main(String[] args) {
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int userChoice=0;
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System.out.println("-----Welcome to the Library!-----\n");
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do{
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System.out.println("\n-----------------------------------");
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System.out.println("1. Search book by Title keyword.");
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System.out.println("2. Search book by ISBN number.");
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System.out.println("3. Search book by Genre.");
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System.out.println("4. Book Check In");
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System.out.println("5. Book Check Out");
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System.out.println("6. Exit from the library.");
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System.out.println("-----------------------------------");
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System.out.print("\nChoose any option: ");
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userChoice = scan.nextInt();
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scan.nextLine();
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switch(userChoice){
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case 1:
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System.out.print("Enter the Title of Book: ");
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app.findByTitle(scan.nextLine());
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break;
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case 2:
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System.out.println("Enter ISBN number: ");
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app.findByISBN(scan.nextInt());
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break;
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case 3:
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System.out.println("Enter Genre: ");
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app.findByGenre(scan.nextLine());
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break;
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case 4:
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checkIn();
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break;
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case 5:
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checkOut();
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break;
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case 6:
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System.out.println("\nThanks for visiting. \nSee you again.");
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break;
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default:
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System.out.println("\nInvalid Choice!");
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}
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}while(userChoice!=6);
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}
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//Checking book In
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private static void checkIn() {
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System.out.println("Enter Book's ISBN number : ");
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int isbnNum = scan.nextInt();
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getStatus(isbnNum);
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int bookAvailable = app.findISBN(isbnNum);
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if(bookAvailable==1) {
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System.out.println(isbnNum);
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app.withdrawBook(isbnNum);
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System.out.println("Book CheckIn successful.");
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getStatus(isbnNum);
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}
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else
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System.out.printf("Book with %d ISBN number not Found in inventory.",isbnNum);
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}
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//Checking book Out
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private static void checkOut() {
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System.out.println("\nEnter Book's ISBN number : ");
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int isbnNum = scan.nextInt();
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int bookAvailable = app.findISBN(isbnNum);
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if(bookAvailable==1) {
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if(app.depositBook(isbnNum))
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System.out.println("Book CheckOut successful.");
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else
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System.out.println("No Space for more Books.");
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}
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else
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System.out.printf("Book with %d ISBN number not Found in inventory.",isbnNum);
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}
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private static void getStatus(int isbn) {
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app.getStatus(isbn);
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}
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}

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