Java SE (Java Platform, Standard Edition)

Hi! I have a database which i can connect to and get information from, but i can't figure out how to insert my resultset into my jTable from two different classes, I found an good exaple on the web but i dont know how to split up the code. I work with the GUI editor in NEtbeans 6.8 since i'm most familiar with it.

I have bound an jButton (that lies in Class A) that will call an method in Class B which will update the jTable.
The action event code

//Creates object "b" from the class ClassB
ClassB b = new ClassB();
        try {

        //Call method showall in ClassB
        b.showall();
        
        } catch (ClassNotFoundException ex) {
System.out.println("Class not found);
        }
{code}
And here is the method "showall"
{code}


        String sql = "my sql query";
        ResultSet rs = dc.query(sql);
        Object[] rows;
        
        while (rs.next()) {

         //add the values to the temporary row
        rows = new Object[]{rs.getInt(0), rs.getString(1), rs.getString(2), rs.getString(3), rs.getString(4)};

        // add the temp row to the table
        // Startup is the name of my mainclass wich i have the jTable in (named "table") 
        
      Startup.table.setValueAt(rows, 1, 1);
{code}

This is the example i found

{code}
class MySQLTable
{

  private static Connection con = null;
  private static String URL = "jdbc:mysql://localhost:3306";
  private static String driver = "com.mysql.jdbc.Driver";
  private static String user = "root";
  private static String pass = "";

  /**
   * Main aplication entry point
   * @param args
   * @throws SQLException
   */
  public static void main(String[] args) throws SQLException
  {

    // a MySQL statement
    Statement stmt;
    // a MySQL query
    String query;
    // the results from a MySQL query
    ResultSet rs;

    // 2 dimension array to hold table contents
    // it holds temp values for now
    Object rowData[][] = {{"Row1-Column1", "Row1-Column2", "Row1-Column3"}};
    // array to hold column names
    Object columnNames[] = {"ID", "User", "Password"};

    // create a table model and table based on it
    DefaultTableModel mTableModel = new DefaultTableModel(rowData, columnNames);
    JTable table = new JTable(mTableModel);

    // try and connect to the database
    try {
      Class.forName(driver).newInstance();
      con = DriverManager.getConnection(URL, user,pass);
    } catch (Exception e) {
      System.err.println("Exception: " + e.getMessage());
    }

    // run the desired query
    query = "SELECT ID, User, Password FROM users.normal";
    // make a statement with the server
    stmt = con.createStatement();
    // execute the query and return the result
    rs = stmt.executeQuery(query);

    // create the gui
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JScrollPane scrollPane = new JScrollPane(table);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);

    // remove the temp row
    mTableModel.removeRow(0);

    // create a temporary object array to hold the result for each row
    Object[] rows;
    // for each row returned
    while (rs.next()) {
      // add the values to the temporary row
      rows = new Object[]{rs.getString(1), rs.getString(2), rs.getString(3)};
      // add the temp row to the table
      mTableModel.addRow(rows);
    }

  }

  private MySQLTable()
  {
  }
} 
{code}
I would appreciate some help with this :)