import java.io.*;
import java.util.*;
 
public class BookStore {
   static InputStreamReader isr = new InputStreamReader(System.in);
   static BufferedReader br = new BufferedReader(isr);
   
  public static void main (String [] arg) throws Exception {
 
    final int iSize = 200;
    Book book = new book (iISBN, sTitle, iQuantity); 
    String [] arrayBook = new String[iSize];
    arrayBook[i] = book;
 
//I have a switch statement for the menu, but took it out to save the space
}//close main
 
  public static void addBook() throws Exception {
    for (int i = 0; i<arrayBook.length; i++) {      
 
//getting the ISBN number
 boolean bISBN = false;
  while(!bISBN) {
 
    System.out.print("Enter the ISBN number: ");
    String sISBN = br.readLine();
    sISBN = sISBN.trim();
 
    try {
      int iOtherISBN = Integer.parseInt(sISBN);
      if(iOtherISBN >= 0 && iOtherISBN <= 199) {
         bISBN = true;
      }//end if
    }//end try
    catch (NumberFormatException nfe) {
      System.out.println("Number not within 0-199, back to the menu.");
      bISBN = false;
    }//end catch
  }//end while
 
//getting the Title
 boolean bTitle = false;
  while(!bTitle) {
 
    System.out.print("Enter your Title: ");
    String sOtherTitle = br.readLine();
    sOtherTitle = sOtherTitle.trim();
 
    if(sOtherTitle.length !=0) {
      bTitle = true;
    }//end if
    else {
      System.out.println("Your title is blank, go back to the menu");
      bTitle = false;
    }//end else
  }//end while
      
//getting the quantity
 boolean bQty = false;
  while(!bQty) {
 
   System.out.print("Quantity of books: ");
    String sQty = br.readLine();
    sQty = sQty.trim();
    
    try {     
      int iOtherQuantity = Integer.parseInt(sQty);
      if (iOtherQuantity >=0) {
        bQty = true;
      }//end if
      else {
        System.out.println("Your number is negavtive, go back to menu.");
        bQty = false;
      }//end else
    }//end try
    catch (NumberExceptionFormat nfe) {
      System.out.println("You did not enter a number, back to the menu you go.");
      bQty = false;
    }//end catch
 
    if(arrayBook[iISBN] ==null) { //checking if there's a book already
      arrayBook[iISBN] = new book();
    }//close if
    else {
       System.out.println("Book exists in there, cannot add, try again.");
    } //end else
 
    arrayBook[i] = new Book; //No idea how to add the object into the array
    }//end for
 
}//close addBook
 
//adding more copies to an exsiting book
public static void addMore(int iISBN, int iQuantity) throws Exception {
  for(int i = 0; i<arrayBook.length; i++) {
    if(iISBN !=null) {
      iQuantity = iQuantity + iOtherQuatity;
    }//end if
    else {
      System.out.println("There's no book here.");
    }//end else
  }//end for  
 
}//close addMore
 
 //selling books
  public static void sellBook(int iISBN, int iQuantity) {
    for (int i = 0; i<arrayBook.length; i++) {
      if(iISBN != null) { 
        if(iQuantity <= iOtherquantity) {
    	  iQuantity = iQuantity - iOtherQuantity;
	}//end if
	else {
	  System.out.println("There's only " + iQuantity + " amount of books left.");
	}//end else
      else {
	System.out.println("There's no book.");
      }//end else
    }//end for
 
}//end sellBook
 
 //searching for a book by the Title
  public static void findBook(String sOtherTitle) {
    for (int i = 0; i<arrayBook.length; i++) {
      //I have absolutely no clue how to search the array by the title
 
  }//close find
 
}//close class