Mahkul

package database;

public class Book
{
    /* at the very beginning we need to create instance variables **/

    public String title;
    
    public String author;
    

Mahkul

java.sql.SQLException: Invalid handle
java.sql.SQLException: Invalid handle
	at sun.jdbc.odbc.JdbcOdbc.standardError(Unknown Source)
	at sun.jdbc.odbc.JdbcOdbc.SQLExecDirect(Unknown Source)
	at sun.jdbc.odbc.JdbcOdbcStatement.execute(Unknown Source)
	at sun.jdbc.odbc.JdbcOdbcStatement.executeQuery(Unknown Source)
	at database.BookDatabase.getBookStoreTotalCost(BookDatabase.java:130)
	at database.BookGUI.actionPerformed(BookGUI.java:175)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)

Mahkul

package database;

import java.sql.*;

public class BookDatabase {

	private String user = "";
	private String password = "";
	static String url = "jdbc:odbc:Books";

Mahkul

package database;

import java.awt.FlowLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import javax.swing.*;
import java.awt.event.ActionListener; 
import java.sql.SQLException;

	/**

Mahkul

package pawel.bookshelf;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*; 

/**
 * This class creates the GUI for the BooShelf. There are methods for creating main frame,
 * top menu, add book dialog box, saving book data to the bookshelf.
 * 

Mahkul

package pawel.bookshelf;

import java.sql.*;

public class BookShelf {

	private String user = "";
	private String password = "";
	static String url = "jdbc:odbc:Books";