Question

Write a console-based program to simulate the management of a bookstore. The program will provide the following functionalities: listing all books; searching for a book; purchasing books.

2. Functionalities The program will maintain a list of books. Each book has the following information: Title; Author; Category; Price; Number of copies

The program will provide the following functionalities:

2.1 List all books in bookstore.

2.2 Search for a book • Search for a book based on following criteria: (1) keyword in a book title; (2) author; or (3) book category; • The above search criteria are listed in a menu. Each menu item has an associated number; Select a criterion, provide argument (keyword, author, or category); complete search • Display search result;

2.3 Purchase books Simulate the following procedure to purchase books; • List books; • List shopping cart (current selected books to purchase); • Select a book whose number of copies is not zero; add it to shopping cart; update shopping cart and display; • Pay to complete the purchase. Update book list;

2.4 Terminate program

3. Design and Implementation

3.1 Book information will be saved in a group of arrays;

3.2 All functionalities are listed in a menu; each menu item has a number which identifies a function; the functionality is accessed by selecting that menu item number;

3.3 For each functionality, design sub-menu if needed;

Answer 1

The required Code is given Below.

BookStoreApp.java

package javaapplication7;
import java.util.*;

class Books
{
String Author, title,Category;
int price,copies;
Books(String titles,String author,int copy,int bookprice,String category)
{
Author=author;
title=titles;
copies=copy;
price=bookprice;
Category=category;
}
}

class BookStore
{
Books []books=new Books[10];
int purchaseCart[]=new int[10];
BookStore()
{
books[0]=new Books("Let us C","Yashwant Kanetkar",8,300,"TextBook");
books[1]=new Books("Data Communications & Networking","Forouzan Mc Graw Hill",7,300,"TextBook");
books[2]=new Books("Operating System ","Galvin Wiley",9,700,"Reference");
books[3]=new Books("Maths","NCERT",2,400,"TextBook");
books[4]=new Books("Effective Java","Joshua Bloch",4,600,"TextBook");
books[5]=new Books("Modern Operating Systems","Andrew S. Tanenbaum",6,600,"Reference");
books[6]=new Books("Programming In Ansi C","E. Balagurusamy",1,350,"TextBook");
books[7]=new Books("The Unix Programming","Brian Kernighan",3,500,"Reference");
books[8]=new Books("Artificial Intelligence: A Modern Approach","Peter Norvig",2,300,"TextBook");
books[9]=new Books("Object Oriented Programming With C++","E. Balagurusamy",6,750,"TextBook");

}
void listBooks()
{
System.out.printf("%-10s %-50s %-30s %-10s %-7s %-7s\n","BookNo","Title","Author","Category","Copies","Price");
System.out.println("--------------------------------------------------------------------------------------------------------------------");
for (int i=0; i<10; i++)
{
System.out.printf("%-10s %-50s %-30s %-10s %-7d %-7d\n",i+1,books[i].title,books[i].Author,books[i].Category,books[i].copies,books[i].price);
}

}
  

void listBooksbyAuthor()
{
Scanner inp=new Scanner(System.in);
String keyword;
int numOfBook=0;

System.out.print("Enter Athor Name : ");
keyword=inp.nextLine();

System.out.printf("%-10s %-50s %-30s %-10s %-7s %-7s\n","BookNo","Title","Author","Category","Copies","Price");
System.out.println("--------------------------------------------------------------------------------------------------------------------");

for (int i=0; i<10; i++)
{
boolean isPresent = books[i].Author.indexOf(keyword) !=-1? true: false;
if(isPresent==true)
{
System.out.printf("%-10s %-50s %-30s %-10s %-7d %-7d\n",i+1,books[i].title,books[i].Author,books[i].Category,books[i].copies,books[i].price);
numOfBook++;
}
}

if (numOfBook<=0)
System.out.println("No Related Books Found");

}
  
void listBooksbyKeyword()
{
Scanner inp=new Scanner(System.in);
String keyword;
int numOfBook=0;

System.out.print("Enter a keyword : ");
keyword=inp.nextLine();

System.out.printf("%-10s %-50s %-30s %-10s %-7s %-7s\n","BookNo","Title","Author","Category","Copies","Price");
System.out.println("--------------------------------------------------------------------------------------------------------------------");

for (int i=0; i<10; i++)
{
boolean isPresent = books[i].title.indexOf(keyword) !=-1? true: false; // check for matching pattern

if(isPresent==true) // if pattern exist
{
System.out.printf("%-10s %-50s %-30s %-10s %-7d %-7d\n",i+1,books[i].title,books[i].Author,books[i].Category,books[i].copies,books[i].price);
numOfBook++;
}
}

if (numOfBook<=0)
System.out.println("No Realted Books Found");

}

void listBooksbyCategory()
{
Scanner inp=new Scanner(System.in);
String keyword;
int numOfBook=0;

System.out.print("Enter Category (Reference/TextBook) : ");
keyword=inp.nextLine();

System.out.printf("%-10s %-50s %-30s %-10s %-7s %-7s\n","BookNo","Title","Author","Category","Copies","Price");
System.out.println("--------------------------------------------------------------------------------------------------------------------");

for (int i=0; i<10; i++)
{
boolean isPresent = books[i].Category.indexOf(keyword) !=-1? true: false;

if(isPresent==true)
{
System.out.printf("%-10s %-50s %-30s %-10s %-7d %-7d\n",i+1,books[i].title,books[i].Author,books[i].Category,books[i].copies,
books[i].price);
numOfBook++;
}
}

if (numOfBook<=0) // if no pattern matching
System.out.println("No Books Found");

}

void purchase() // purchase book method
{
listBooks(); // display the list before purchase

Scanner inp=new Scanner(System.in);
int BookNumber;
boolean purchase=false;

System.out.print("Enter BookNumber of book to purchase (0 to stop) : ");
BookNumber=inp.nextInt(); // enter BookNumber of book

while(BookNumber!=0) // loop until user input 0 to stop puchase
{
if (books[BookNumber-1].copies > purchaseCart[BookNumber-1]+1 ) // if suuffcient copies is availble
{
purchaseCart[BookNumber-1]++;
purchase=true;
}
else
System.out.println(" No copies not avaialable");

System.out.print("Enter Book Number of book to purchase (0 to stop) : "); // again iterate
BookNumber=inp.nextInt();

}

if(purchase==true) // if any books purchased
{
System.out.println("Pay to complete (1 yes / 0 No)"); // ask to pay or not
int pay=inp.nextInt();

displayCart();

if(pay==1)
{
// if paid then book inventory upadted copy nos and purchaseCart will be zero
for(int i=0; i<10; i++)
{
if (purchaseCart[i]>-0)
books[i].copies=books[i].copies-purchaseCart[i];

purchaseCart[i]=0;
}

System.out.println("Purchase success ");
}

else
{
System.out.println("Purchase cancel ");
for(int i=0; i<10; i++)
{
purchaseCart[i]=0; // on cancel purchase purchaseCart will be zero
}

}

}

}
void displayCart() // display the purcahse purchaseCart with total amount
{
System.out.println(" Your shopping Cart : ");

System.out.printf("%-10s %-50s %-30s %-10s %-7s %-7s\n","BookNo","Title","Author","Category","Copies","Price");
System.out.println("--------------------------------------------------------------------------------------------------------------------");

double tot=0;
for(int i=0; i<10; i++)
{
if (purchaseCart[i]>-0)
{
System.out.printf("%-10s %-50s %-30s %-10s %-7d %-7d\n",i+1,books[i].title,books[i].Author,books[i].Category,purchaseCart[i],books[i].price);
tot=tot+purchaseCart[i] * books[i].price;
}
}
System.out.println(" Total shopping Amount : "+ tot) ;
}
}

public class BookStoreApp
{
public static void main(String a[])
{
int choice;
BookStore store=new BookStore();
Scanner inp=new Scanner(System.in);
while(true)
{
System.out.println("Book store application");
System.out.println("1. List Books");
System.out.println("2. Search Books");
System.out.println("3. Purchase Books");
System.out.println("4. Exit");
System.out.print("Enter choice : ");
choice=inp.nextInt();
switch(choice)
{
case 1:
store.listBooks();
break;
case 2:
int choice2;
System.out.println("Search Book By ");
System.out.println("1. keyword");
System.out.println("2. Author");
System.out.println("3. Category");
System.out.print("Enter your choice : ");
choice2=inp.nextInt();
switch(choice2)
{
case 1:
store.listBooksbyKeyword();
break;
case 2:
store.listBooksbyAuthor();
break;
case 3:
store.listBooksbyCategory();
break;
default: System.out.println("Invalid choice!");
}
break;
case 3:
store.purchase();
break;
case 4 :
System.exit(0);
break;
default:
System.out.println("Invalid choice");

} //switch end

} // loop end

}

}

Output