Swings and JDBC



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Vinay KP
Swings and JDBC
1 Answer(s)      6 years and 3 months ago
Posted in : Java Beginners

Hi.. I am vinay.. I am developing a small application using swings and mysql. I am sending part of the code here..

The problem is i need to update the mysql fields with values which are gettin from dynamiclly created JTextfields... but i am not getting how i can fetch those particular values and update database with those value.....

Please help me..

My work is paused here... please

Here the code....

package kp;

import java.awt.*; import java.util.regex.*;

import java.awt.event.*;

import javax.swing.*;

import java.io.*; import java.net.*; import java.util.*; import java.sql.*; import java.lang.*; public class attend extends JFrame{

private JLabel jLabel1;
private JButton jButton1;
private JTextField jTextField2;
private JPanel contentPane;
private JTextField jTextField1;
final Vector columnNames = new Vector();
final Vector data = new Vector();
Vector row;
final Object g=new Vector();

public attend()



private void initializeComponent()
    jLabel1 = new JLabel();
    jButton1 = new JButton();
    jTextField1 = new JTextField(20);
    contentPane = (JPanel)this.getContentPane();


        Connection con = null;
        con = DriverManager.getConnection("jdbc:mysql://localhost/vinay", "root", "admin");
        Statement st = con.createStatement();
        ResultSet rs= st.executeQuery("Select * from student");
        ResultSetMetaData md = rs.getMetaData();
        int columns = md.getColumnCount();
        for (int i = 1; i <= columns; i++) 
        columnNames.addElement( md.getColumnName(i) );
        while (rs.next()) {
        row = new Vector(columns);
        for (int i = 1; i <= columns; i++) 
            row.addElement( rs.getObject(i));

        data.addElement( row );

        String k=jTextField1.getText();
        catch(Exception e) {}
        JTable table = new JTable(data, columnNames);
        JScrollPane scrollPane = new JScrollPane( table );
    addComponent(contentPane, scrollPane, 5,110,200,200);
addComponent(contentPane, jLabel1, 50,1,345,37);
addComponent(contentPane, jButton1, 220,300,100,28);
this.setTitle("Class Attendance");
this.setLocation(new Point(66, 48));
this.setSize(new Dimension(438, 384));

jButton1.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e)
        Vector z=new Vector();
            int i;
            String sql=null;
            Connection con = null;
            //ResultSet rs=null;
            con = DriverManager.getConnection("jdbc:mysql://localhost/vinay", "root", "admin");
            System.out.println("connectin established");
            Statement st = con.createStatement();
                 String a=(String) row.get(i);
                Pattern p=Pattern.compile("^p");
                Matcher m=p.matcher(a);
            sql="update student set attend='"+a+"'";

            catch(Exception e1) {}


private void addComponent(Container container,Component c,int x,int y,int width,int height)


View Answers

February 3, 2011 at 12:33 PM

Hi Friend,

Please visit the following link:

Add Edit Delete Application

Hope that it will be helpful for you.



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