Hello!
I am trying to add new data into a database.
What is the mistake in my code?
I got the error message such as "general error".

import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import javax.swing.*;
public class AddRecord implements ActionListener{
    private ScrollingPanel fields;
    private JTextArea output;
    private Connection connection;
    public AddRecord(Connection c, ScrollingPanel f, JTextArea o)
    {
     connection =c;
     fields=f;
     output=o;
    }
    public void actionPerformed( ActionEvent e)
    {
      try {
           Statement statement=connection.createStatement();
           if( !fields.last.getText().equals("")&&
                !fields.first.getText().equals("")){
                String query="INSERT INTO addresses ("+
                "firstname, lastname, address, city,"+
                "stateorprovince, postalcode, country,"+
                "emailaddress, homephone, faxnumber"+
                ") VALUES ('"+
                fields.first.getText()+"','"+
                fields.last.getText()+"','"+
                fields.address.getText()+"','"+
                fields.city.getText()+"','"+
                fields.state.getText()+"','"+
                fields.zip.getText()+"','"+
                fields.country.getText()+"','"+
                fields.email.getText()+"','"+
                fields.home.getText()+"','"+
                fields.fax.getText()+"')";
            output.append("\nSending query:"+ connection.nativeSQL(query)+"\n");
            int result=statement.executeUpdate(query);
            if (result==1)
              output.append("\nInsertion successful\n");
              else {
               output.append("\nInsertion failed\n");
               fields.first.setText("");
               fields.last.setText("");
               fields.address.setText("");
               fields.city.setText("");
               fields.state.setText("");
               fields.zip.setText("");
               fields.country.setText("");
               fields.email.setText("");
               fields.home.setText("");
               fields.fax.setText("");
              }
          }
          else
           output.append("\nEnter at least first and "+
                         "last name then press Add\n");
           statement.close();
          }
          catch (SQLException sqlex){
           sqlex.printStackTrace();
           output.append(sqlex.toString());
           }
          }
        }

Try using a preparedStatement rather than cobbling together a query statement like that.

See the API and Sun tutorials (a link can be found in the API) for more info.