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Thread: Cannot connect to MS Access Database :(

  1. #1
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    Default Cannot connect to MS Access Database :(

    Hello everyone,

    I am new to Java programming. I found a gui which connects to a MS Database. I also have the database file, but I am not sure about how to connect this gui with the database. Can somebody explain it to me? Thanks in advance... :$

    //Java Core Package
    import javax.swing.*;
    //Java Extension Package
    import java.awt.*;
    import java.awt.event.*;
    import java.sql.*;
     
    public class addItemToDatabase extends JFrame {
     
    	//Initializing Components
    	private JTextField inputs[];
    	private JButton add, reset;
    	private JLabel labels[];
    	private String fldLabel[] = {"First Name: ","Middle Name: ","Family Name: ","Age: "};
    	private JPanel p1;
     
    	Connection con;
    	Statement st;
    	ResultSet rs;
    	String db;
     
    	//Setting up GUI
        public addItemToDatabase() {
     
        	//Setting up the Title of the Window
        	super("Adding Data to the Database");
     
        	//Set Size of the Window (WIDTH, HEIGHT)
        	setSize(300,180);
     
        	//Exit Property of the Window
        	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     
    		//Constructing Components
        	inputs = new JTextField[4];
        	labels = new JLabel[4];
        	add = new JButton("Add");
        	reset = new JButton("Reset");
        	p1 = new JPanel();
     
        	//Setting Layout on JPanel 1 with 5 rows and 2 column
        	p1.setLayout(new GridLayout(5,2));
     
        	//Setting up the container ready for the components to be added.
        	Container pane = getContentPane();
        	setContentPane(pane);
     
        	//Setting up the container layout
        	GridLayout grid = new GridLayout(1,1,0,0);
        	pane.setLayout(grid);
     
        	//Creating a connection to MS Access and fetching errors using "try-catch" to check if it is successfully connected or not.
        	try {
    				Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    				db = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=addItemDB.mdb;";
    				con = DriverManager.getConnection(db,"","");
    				st = con.createStatement();		
     
    				JOptionPane.showMessageDialog(null,"Successfully Connected to Database","Confirmation", JOptionPane.INFORMATION_MESSAGE);
     
    			} catch (Exception e) {
    				JOptionPane.showMessageDialog(null,"Failed to Connect to Database","Error Connection", JOptionPane.ERROR_MESSAGE);
    				System.exit(0);
    			}
     
        	//Constructing JLabel and JTextField using "for loop" in their desired order
        	for(int count=0; count<inputs.length && count<labels.length; count++) {
        		labels[count] = new JLabel(fldLabel[count]);
        		inputs[count] = new JTextField(20);
     
        		//Adding the JLabel and the JTextFied in JPanel 1
        		p1.add(labels[count]);
        		p1.add(inputs[count]);
        	}
     
        	//Implemeting Even-Listener on JButton add
    		add.addActionListener(
    		new ActionListener() {
     
    			//Handle JButton event if it is clicked
    			public void actionPerformed(ActionEvent event) {
     
    				if (inputs[0].getText().equals("") || inputs[1].getText().equals("") || inputs[2].getText().equals("") || inputs[0].getText() == null || inputs[1].getText() == null || inputs[2].getText() == null)
    					JOptionPane.showMessageDialog(null,"Fill up all the Fields","Error Input", JOptionPane.ERROR_MESSAGE);
     
    				else
     
    				try {
     
    					String add = "insert into person (firstName,middleName,familyName,age) values ('"+inputs[0].getText()+"','"+inputs[1].getText()+"','"+inputs[2].getText()+"',"+inputs[3].getText()+")";
    					st.execute(add); //Execute the add sql
     
    					Integer.parseInt(inputs[3].getText()); //Convert JTextField Age in to INTEGER
     
    					JOptionPane.showMessageDialog(null,"Item Successfully Added","Confirmation", JOptionPane.INFORMATION_MESSAGE);
     
    				}catch (NumberFormatException e) {
    					JOptionPane.showMessageDialog(null,"Please enter an integer on the Field AGE","Error Input", JOptionPane.ERROR_MESSAGE);
    				}catch (Exception ei) {
    					JOptionPane.showMessageDialog(null,"Failure to Add Item. Please Enter a number on the Field AGE","Error Input", JOptionPane.ERROR_MESSAGE);
    				}
    			}
    		}
    		);
     
    		//Implemeting Even-Listener on JButton reset
    		reset.addActionListener(
    		new ActionListener() {
     
    			//Handle JButton event if it is clicked
    			public void actionPerformed(ActionEvent event) {
    				inputs[0].setText(null);
    				inputs[1].setText(null);
    				inputs[2].setText(null);
    				inputs[3].setText(null);
    			}
    		}
    		);
     
    		//Adding JButton "add" and "reset" to JPanel 1 after the JLabel and JTextField
    		p1.add(add);
    		p1.add(reset);
     
    		//Adding JPanel 1 to the container
    		pane.add(p1);
     
        	/**Set all the Components Visible.
        	 * If it is set to "false", the components in the container will not be visible.
        	 */
        	setVisible(true);
        }
     
    	//Main Method
        public static void main (String[] args) {
        	addItemToDatabase aid = new addItemToDatabase();
    	}
    }


  2. #2
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    Default Re: Cannot connect to MS Access Database :(

    The relevant part is
    try {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    db = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=addItemDB.mdb;";
    con = DriverManager.getConnection(db,"","");
    st = con.createStatement();

    JOptionPane.showMessageDialog(null,"Successfully Connected to Database","Confirmation", JOptionPane.INFORMATION_MESSAGE);

    } catch (Exception e) {
    JOptionPane.showMessageDialog(null,"Failed to Connect to Database","Error Connection", JOptionPane.ERROR_MESSAGE);
    System.exit(0);
    }
    You need an Access database named AddItemDB.mdb.

  3. #3
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    Default Re: Cannot connect to MS Access Database :(

    check ur DSN name

    --- Update ---

    please give valid DSN name

  4. #4
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    Default Re: Cannot connect to MS Access Database :(

    in getConnection() method just write like this..
    DriverManager.getConnection("jdbcdbc:dsn _name");

    just provide ur dsn name correctly..ur application vl work properly..
    good luck..

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