Configuring MySQL and Connector/J server

Question

I now have a working Applet that, when run from the compiler, will retrieve and update a MySQL database. Unfortunately, when I run the same Applet in a web brower (on an Apache server), the Applet does not pass values to/from the MySQL database.
Is this a problem with my Applet or server? Any idea how to correctly set the server to utilize Connector/J and JDBC? Why is it working with the java console and JBuilder but not web browsers?
in case it helps:
Apache server
MySQL database
JBuilder compiler (applet works when run from here)
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import java.sql.*;
public class score
    extends JApplet {
  Container cp = getContentPane();
  JTextField fright = new JTextField(3);
  JTextField fleft = new JTextField(3);
  JButton refresh = new JButton("CheckDB");
  JButton left1 = new JButton("1");
  JButton left2 = new JButton("2");
  JButton left3 = new JButton("3");
  JButton left1m = new JButton("-1");
  JButton left2m = new JButton("-2");
  JButton left3m = new JButton("-3");
  JButton right1 = new JButton("1");
  JButton right2 = new JButton("2");
  JButton right3 = new JButton("3");
  JButton right1m = new JButton("-1");
  JButton right2m = new JButton("-2");
  JButton right3m = new JButton("-3");
  int lscore;
  int rscore;
  String l = ("");
  String r = ("");
  String updateString;
  Connection con = null;
  Statement st = null;
  ResultSet rs = null;
  public void init() {
    JPanel top = new JPanel();
    top.add(fleft);
    top.add(fright);
    top.add(refresh);
    JPanel right = new JPanel();
    right.add(right1);
    right.add(right2);
    right.add(right3);
    right.add(right1m);
    right.add(right2m);
    right.add(right3m);
    JPanel left = new JPanel();
    left.add(left1);
    left.add(left2);
    left.add(left3);
    left.add(left1m);
    left.add(left2m);
    left.add(left3m);
    top.setLayout(new FlowLayout());
    left.setLayout(new GridLayout(6, 1));
    right.setLayout(new GridLayout(6, 1));
    cp.setLayout(new BorderLayout());
    cp.add(top, BorderLayout.CENTER);
    cp.add(right, BorderLayout.EAST);
    cp.add(left, BorderLayout.WEST);
    right1.addActionListener(new ButtonListener());
    right2.addActionListener(new ButtonListener());
    right3.addActionListener(new ButtonListener());
    right1m.addActionListener(new ButtonListener());
    right2m.addActionListener(new ButtonListener());
    right3m.addActionListener(new ButtonListener());
    left1.addActionListener(new ButtonListener());
    left2.addActionListener(new ButtonListener());
    left3.addActionListener(new ButtonListener());
    left1m.addActionListener(new ButtonListener());
    left2m.addActionListener(new ButtonListener());
    left3m.addActionListener(new ButtonListener());
    refresh.addActionListener(new ButtonListener());
//                    LISTENERS/FUNCTIONS
  class ButtonListener
      implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      if (e.getSource() == refresh) {
        try {
      Class.forName("com.mysql.jdbc.Driver").newInstance();
      con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
        "root", "");
      st = con.createStatement();
      rs = st.executeQuery("SELECT score FROM score");
      int count = 0;
      while(rs.next()) {
        int g = rs.getInt(1);
        if (count == 0) {lscore = g;}
        if (count == 1) {rscore = g;}
        count++;
    } catch (Exception d) {
      System.err.println("Exception: " + d.getMessage());
    } finally {
      try {
        if(rs != null)
          rs.close();
        if(st != null)
          st.close();
        if(con != null)
          con.close();
      } catch (SQLException d) {
    l = String.valueOf(lscore);
    fleft.setText(l);
    r = String.valueOf(rscore);
    fright.setText(r);
      if (e.getSource() == left1) {
        lscore = lscore + 1;
        l = String.valueOf(lscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + l + " WHERE SIDE = 1";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fleft.setText(l);
      if (e.getSource() == left2) {
        lscore = lscore + 2;
        l = String.valueOf(lscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + l + " WHERE SIDE = 1";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fleft.setText(l);
      if (e.getSource() == left3) {
        lscore = lscore + 3;
        l = String.valueOf(lscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + l + " WHERE SIDE = 1";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fleft.setText(l);
      if (e.getSource() == left1m) {
        lscore = lscore - 1;
        l = String.valueOf(lscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + l + " WHERE SIDE = 1";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fleft.setText(l);
      if (e.getSource() == left2m) {
        lscore = lscore - 2;
        l = String.valueOf(lscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + l + " WHERE SIDE = 1";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fleft.setText(l);
      if (e.getSource() == left3m) {
        lscore = lscore - 3;
        l = String.valueOf(lscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + l + " WHERE SIDE = 1";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fleft.setText(l);
      if (e.getSource() == right1) {
        rscore = rscore + 1;
        r = String.valueOf(rscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + r + " WHERE SIDE = 2";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fright.setText(r);
      if (e.getSource() == right2) {
        rscore = rscore + 2;
        r = String.valueOf(rscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + r + " WHERE SIDE = 2";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fright.setText(r);
      if (e.getSource() == right3) {
        rscore = rscore + 3;
        r = String.valueOf(rscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + r + " WHERE SIDE = 2";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fright.setText(r);
      if (e.getSource() == right1m) {
        rscore = rscore - 1;
        r = String.valueOf(rscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + r + " WHERE SIDE = 2";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fright.setText(r);
      if (e.getSource() == right2m) {
        rscore = rscore - 2;
        r = String.valueOf(rscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + r + " WHERE SIDE = 2";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fright.setText(r);
      if (e.getSource() == right3m) {
        rscore = rscore - 3;
        r = String.valueOf(rscore);
        updateString = "UPDATE SCORE " +
        "SET SCORE = " + r + " WHERE SIDE = 2";
        try {
          Class.forName("com.mysql.jdbc.Driver").newInstance();
          con = DriverManager.getConnection("jdbc:mysql://192.168.0.3:3306/bball",
                                            "root", "");
          st = con.createStatement();
          st.executeUpdate(updateString);
        catch (Exception d) {
          System.err.println("Exception: " + d.getMessage());
        finally {
          try {
            if (st != null) {
              st.close();
            if (con != null) {
              con.close();
          catch (SQLException d) {
        fright.setText(r);
}

Answer 1

Thanks for the info! Though I'm still confused about this:
There are two ways to deal
with this: (1) make sure your database is running on
the same server as Apache, or (2) sign your applet so
that the user can allow it to perform insecure
actions.The Apache and MySQL are running on the same machine so I don't see a problem with server access. How could I sign the applet to perform insecure actions?
Also, does the Connector/J installation method have anything to do with it? All I did was copied the .jar file to the dirctory in JBuilder and jsdk (ie: "C:\j2sdk1.4.1_02\jre\lib\ext\mysql-connector-java-3.0.15-ga-bin.jar") and set the CLASSPATH. I don't see a JDBC service running in my Apache monitor- could Apache not be configued to handle JDBC?
Thanks again!
PS: Oh yeah- heh- sorry about not using methods- this is just a quick weekend hack job ;-)