false NULLPOINTEREXCEPTION?

[brendanmcdonagh]

Hi,

I am accessing my jtable via

sf1.setText((String)table.getValueAt(selectedRow, 1));
       sf2.setText((String)table.getValueAt(selectedRow, 2));
       sf3.setText((String)table.getValueAt(selectedRow, 3));
       sf4.setText((String)table.getValueAt(selectedRow, 4));
       sf5.setText((String)table.getValueAt(selectedRow, 5));
       sf6.setText((String)table.getValueAt(selectedRow, 6));
       sf7.setText((String)table.getValueAt(selectedRow, 7));
       sf8.setText((String)table.getValueAt(selectedRow, 8));
       sf9.setText((String)table.getValueAt(selectedRow, 9));

However the last element always returns null. I thought it something to do with sf8 when that was my last column but now it's doing it for my new last column sf9. When i look in my table there is data in the last columns and the data from sf8 is now showing after adding another column. Very confused.

Any one see what I don't?

p.s I am purposely not accessing the firstcolumn in the jtable.

[JosAH]

@brendanmcdonagh
Are sf1 ... sf9 JTextFields or similar? Is the 'table' variable your JTable? How many columns does its model have? Are you sure the data doesn't contain a null value for some reason?

kind regards,

Jos

ps. The piece of code you showed isn't enough to find the error.

[brendanmcdonagh]

Hi Jos,

didn't want to paste whole class as it's quite big but if your willing to scan through i would appreciate it

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
package javaapplication1;
import java.awt.*;
import java.sql.*;
import java.util.*;
import javax.swing.JOptionPane.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.table.TableColumn;
 
/**
 *
 * @author Admin
 */
public class GUI extends JFrame {
 
    JTable table;
JMenuItem jmi;
 
        static JTextField sf1;
        static JTextField sf2;
        static JTextField sf3;
        static JTextField sf4;
        static JTextField sf5;
        static JTextField sf6;
        static JTextField sf7;
        static JTextField sf8;
        static JTextField sf9;
    Boolean data;
    static JLabel tf1;
    static JLabel tf2;
    static JLabel tf3;
    static JLabel tf4;
    static JLabel tf5;
    static JLabel tf6;
    static JLabel tf7;
    static JLabel tf8;
    static JLabel tf9;
Statement s;
Connection con;
    JPanel panel1 = new JPanel();
    JLabel search;
    JLabel from;
JTable table2;
    JPanel panel2;
    JPanel panel3;
    JPanel searchPanel;
    JButton addButton;
    JButton repairButton;
    JButton newButton;
    JButton deleteButton;
    JButton editButton;
    JButton refreshButton;
    JButton searchButton;
    Vector columnNames;
int selectedRow;
JTextField searchField;
JComboBox combo;
 
 
 
    public GUI(JTable aTable, Connection con2, Vector vector)
    {
        searchPanel = new JPanel();
        searchPanel.setLayout(new FlowLayout());
        columnNames = vector;
        //setLayout(new GridLayout(1,1));
        panel1 = new  JPanel();
        panel2 = new  JPanel();
        panel3 = new  JPanel();
        //panel1.setBorder(BorderFactory.createLineBorder(Color.black));
//panel2.setBorder(BorderFactory.createLineBorder(Color.black));
//panel3.setBorder(BorderFactory.createLineBorder(Color.black));
//searchPanel.setBorder(BorderFactory.createLineBorder(Color.black));
        searchField = new JTextField(20);
        search = new JLabel("Enter your Search criteria: ");
        from = new JLabel("From Column: ");
        searchPanel.add(search);
        searchPanel.add(searchField);
        searchPanel.add(from);
        //combo = new JComboBox("Select Column");
 
        JPanel panel4 = new JPanel();
        panel1.setLayout(new GridLayout(1, 1));
 
        panel2.setPreferredSize(new Dimension(10, 10));
     panel2.setLayout(new GridLayout(10,2));
      panel3.setLayout(new FlowLayout());
 
        JMenuBar mb = new JMenuBar();
        JMenu m = new JMenu("File");
 
                 jmi = new JMenuItem("Exit");
                jmi.addActionListener(new ButtonWatcher());
                m.add(jmi);
        JMenu m2 = new JMenu("Edit");
        m2.add(new JMenuItem("Edit"));
 
        JMenu m3 = new JMenu("View");
        m3.add(new JMenuItem("View"));
 
        JMenu m4 = new JMenu("Help");
        m4.add(new JMenuItem("Help"));
 
        mb.add(m);
        mb.add(m2);
        mb.add(m3);
        mb.add(m4);
        setJMenuBar(mb);
       Dimension screenSize = getToolkit().getScreenSize();
setSize(screenSize.width, screenSize.height);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setTitle("PC Warehouse Customer Database");
        table = aTable;
 
 
        table.getTableHeader().getColumnModel().getColumn(0).setMaxWidth(0);
    table.getTableHeader().getColumnModel().getColumn(0).setMinWidth(0);
    table.getTableHeader().getColumnModel().getColumn(0).setPreferredWidth(0);
    table.getTableHeader().getColumnModel().getColumn(0).setResizable(false);
panel1.add(table);
 
 
       // table.setCellSelectionEnabled(true);
    ListSelectionModel cellSelectionModel = table.getSelectionModel();
    cellSelectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
table.setRowSelectionInterval(0, 0);
    cellSelectionModel.addListSelectionListener(new ListSelectionListener() {
      public void valueChanged(ListSelectionEvent e) {
        //String selectedData = null;
 
        selectedRow = table.getSelectedRow();
        try
        {
       tf1.setText((String)table.getValueAt(selectedRow, 1));
       tf2.setText((String)table.getValueAt(selectedRow, 2));
       tf3.setText((String)table.getValueAt(selectedRow, 3));
       tf4.setText((String)table.getValueAt(selectedRow, 4));
       tf5.setText((String)table.getValueAt(selectedRow, 5));
       tf6.setText((String)table.getValueAt(selectedRow, 6));
       tf7.setText((String)table.getValueAt(selectedRow, 7));
       tf8.setText((String)table.getValueAt(selectedRow, 8));
       tf9.setText((String)table.getValueAt(selectedRow, 9));
       System.out.println((String)table.getValueAt(selectedRow, 8));
       System.out.println("Selected: " + selectedRow);
      }
        catch(NullPointerException op)
        {
            System.out.println("empty");
        }
      }
    });
 
 
        JScrollPane sp = new JScrollPane(table);
      con = con2;
      try
      {
      s = con.createStatement();
      }
      catch(Exception e)
      {
          System.out.println(e.getMessage());
      }
        //s.execute("select * from customers");
         //table.scrollRectToVisible(table.getCellRect(0,2, true));
        addButton = new JButton("Save Customer");
        newButton = new JButton("New Order");
        repairButton = new JButton("New Repair");
        editButton = new JButton("Edit Selected Customer");
        deleteButton = new JButton("Delete Selected Customer");
        refreshButton = new JButton("Refresh");
         searchButton = new JButton("Search");
        JLabel labelFirstName = new JLabel("Customer First Name:");
        JLabel labelLastName = new JLabel("Customer Last Name:");
        //labelName.setBorder(BorderFactory.createLineBorder(Color.black));
 
   // new JLabel("Customer Name");
        tf1 = new JLabel();
        JLabel labelAddress1 = new JLabel("Customer Address:");
         tf2 = new JLabel();
         JLabel labelEmail = new JLabel("Customer Email:");
         tf3 = new JLabel();
        JLabel labelPhone = new JLabel("Customer Phone No:");
         tf4 = new JLabel();
        JLabel labelPurchase = new JLabel("Customer Purchase:");
         tf5 = new JLabel();
         JLabel labelPurchasePrice = new JLabel("Customer Purchase Price:");
         tf6 = new JLabel();
         JLabel labelPurchaseDate = new JLabel("Customer Purchase Date:");
         tf7 = new JLabel();
         JLabel labelPurchaseOrRepair = new JLabel("Purchase or Repair:");
         tf8 = new JLabel();
         //JScrollPane purchaseScroll = new JScrollPane(tf5);
        //panel = new JPanel();
        //panel.setLayout(new GridLayout(2, 2));
        //panel1.add(sp);
 
 
 
        //panel2.setLayout(new GridLayout(10,2));
        panel2.add(labelFirstName);
        panel2.add(tf1);
        panel2.add(labelLastName);
        panel2.add(tf2);
 
         panel2.add(labelAddress1);
        panel2.add(tf3);
        panel2.add(labelEmail);
        panel2.add(tf4);
        panel2.add(labelPhone);
        panel2.add(tf5);
        panel2.add(labelPurchase);
        panel2.add(tf6);
        panel2.add(labelPurchasePrice);
        panel2.add(tf7);
        panel2.add(labelPurchaseDate);
        panel2.add(tf8);
        panel2.add(labelPurchaseOrRepair);
        //panel2.add(purchaseScroll);
 
        //panel.add(panel2);
 
        //cp.add(panel);
        repairButton.addActionListener(new ButtonWatcher());
        addButton.addActionListener(new ButtonWatcher());
        newButton.addActionListener(new ButtonWatcher());
        editButton.addActionListener(new ButtonWatcher());
        deleteButton.addActionListener(new ButtonWatcher());
        refreshButton.addActionListener(new ButtonWatcher());
        searchButton.addActionListener(new ButtonWatcher());
        System.out.println("HERE");
        //panel2.add(addButton);
        panel3.add(newButton);
        panel3.add(repairButton);
        panel3.add(editButton);
        panel3.add(deleteButton);
        panel3.add(refreshButton);
        Container cp = getContentPane();
        cp.setLayout(new GridLayout(4,1));
        panel1.add(sp);
       cp.add(panel1);
 
       combo = new JComboBox(columnNames);
       combo.removeItemAt(0);
 
searchPanel.add(combo);
searchPanel.add(searchButton);
        cp.add(panel2);
        cp.add(searchPanel);
        cp.add(panel3);
 
        setVisible(true);
 
    }
    public JTable createTable()
    {
        String dataSourceName = "pWarehouseDatabase";
        String dbURL = "jdbc:odbc:" + dataSourceName;
        try {
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection con = DriverManager.getConnection(dbURL, "","");
        Statement s = con.createStatement();
        s.execute("select * from customers ORDER BY customerLastName"); // create a table * from customers
        //s.execute("insert into TEST12345 values(1)"); // insert some data into the table
        //s.execute("select column_name from TEST12345"); // select the data from the table
        ResultSet resultSet = s.getResultSet(); // get any ResultSet that came from our query
        ResultSetMetaData metaData = resultSet.getMetaData();
               int numberOfColumns =  metaData.getColumnCount();
               Vector columnNames = new Vector();
               for(int column = 0; column < numberOfColumns; column++)
               {
                     columnNames.addElement(metaData.getColumnLabel(column+1));
               }
               Vector rows = new Vector();
               while (resultSet.next())
               {
                    Vector newRow = new Vector();
                    for (int i = 1; i <= metaData.getColumnCount(); i++)
                    {
                         newRow.addElement(resultSet.getObject(i));
                    }
                    rows.addElement(newRow);
               }
                table = new JTable(rows, columnNames);
 
 
               //dispose();
 
 
        //s.close(); // close the Statement to let the database know we're done with it
        //con.close(); // close the Connection to let the database know we're done with it
            //GUI gui2 = new GUI(table, con);
    }
 
 
        catch (Exception o){
      o.printStackTrace();
    }
   return table;
}
    /*private class listSelectionListener implements TableModelListener
    {
        public void tableChanged(TableModelEvent e)
        {
            System.out.println("changed");
            int rowNumber = table.getSelectedRow();
            System.out.println(rowNumber);
        }
 
    }
*/
    private class ButtonWatcher implements ActionListener
    {
 
         public void itemStateChanged(ItemEvent e) {
             Object o = e.getSource();
             if(o.equals(jmi))
             {
        System.exit(1);
    }
 
         }
 
        public void actionPerformed(ActionEvent e)
        {
            Object obj = e.getSource();
            if(obj.equals(jmi))
             {
        System.exit(1);
    }
            if(obj.equals(searchButton))
             {
                data = false;
             String keyword = searchField.getText();
             String columnSearch = (String)combo.getSelectedItem();
             try
                {
                    //s.close();
                    //con.close();
                    String dbURL = "jdbc:odbc:" + "pWarehouseDatabase";
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection con = DriverManager.getConnection(dbURL, "","");
        Statement s = con.createStatement();
               // s.execute("INSERT INTO customers//(name, address, email, phone, purchase)");
//System.out.println(columnSearch + keyword);
            //s.execute("INSERT INTO customers values(?,'" +name + "','" + address + "','" + email + "','" + phone + "','" + purchase + "')");
           //String query = "INSERT INTO customers(id, customerName, customerAddress, customerEmail, customerNumber, customerPurchase) values(?, '" +name + "','" + address + "','" + email + "','" + phone + "','" + purchase + "')";
//s.execute("SELECT * FROM customers WHERE '" + columnSearch + "' = '" + keyword + "'");
String query = "SELECT * FROM customers WHERE ("+columnSearch+" = '"+keyword+"')";
s.execute(query);
        //s.execute("SELECT * from customers");
//s.execute("SELECT * FROM customers WHERE 'customerFirstName' = 'hope'");
ResultSet resultSet = s.getResultSet(); // get any ResultSet that came from our query
 
        ResultSetMetaData metaData = resultSet.getMetaData();
               int numberOfColumns =  metaData.getColumnCount();
               Vector columnNames = new Vector();
               for(int column = 0; column < numberOfColumns; column++)
               {
                     columnNames.addElement(metaData.getColumnLabel(column+1));
                     //System.out.print(test);
               }
               Vector rows = new Vector();
               for (int i = 1; i <= metaData.getColumnCount(); i++)
                    {
                         //newRow.addElement(resultSet.getObject(i));
 
                    }
               while (resultSet.next())
               {
                   Vector newRow = new Vector();
                   data = true;
 
 
                    for (int i = 1; i <= metaData.getColumnCount(); i++)
                    {
                         newRow.addElement(resultSet.getObject(i));
 
                    }
                    rows.addElement(newRow);
 
               }
 
               table2 = new JTable(rows, columnNames);
               //System.out.println("Not nulls - rows" + rows.toString());
 
 
 
     //System.out.println("WORK " + table);
               //GUI gui = new GUI(table,con, columnNames);
        s.close(); // close the Statement to let the database know we're done with it
        con.close();
        if(data)
        {
        dispose();
 
        SearchResults results = new SearchResults(table2);
        }
        else
        {
            JFrame frame = new JFrame();
            JOptionPane.showMessageDialog(frame, "Your search for " + keyword + " returned no matches", "Search Result", JOptionPane.PLAIN_MESSAGE);
        }
        //results.setVisible(true);
 
             }
             catch(Exception p)
             {
                System.out.println(p.getMessage());
             }
 
 
 
 
 
 
    }
            if(obj.equals(addButton))
            {
                String name = tf1.getText();
                String address = tf2.getText();
                String email = tf3.getText();
                String phone = tf4.getText();
                String purchase = tf5.getText();
                String id = "NULL";
                try
                {
                    s.close();
                    con.close();
                    String dbURL = "jdbc:odbc:" + "pWarehouseDatabase";
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection con = DriverManager.getConnection(dbURL, "","");
        Statement s = con.createStatement();
               // s.execute("INSERT INTO customers//(name, address, email, phone, purchase)");
 
            //s.execute("INSERT INTO customers values(?,'" +name + "','" + address + "','" + email + "','" + phone + "','" + purchase + "')");
           //String query = "INSERT INTO customers(id, customerName, customerAddress, customerEmail, customerNumber, customerPurchase) values(?, '" +name + "','" + address + "','" + email + "','" + phone + "','" + purchase + "')";
s.execute("INSERT INTO customers(customerName, customerAddress, customerEmail, customerNumber, customerPurchase) values('" +name + "','" + address + "','" + email + "','" + phone + "','" + purchase + "')");
 
 
            //s.execute("UPDATE customers  SET customerName = '" +name + "' WHERE customerName = '" +name + "'");
            //Statement s = connection.createStatement();
            //s.executeUpdate(sql);
            //id++;
            s.close();
 
 
 
 
                tf1.setText("");
                tf2.setText("");
                tf3.setText("");
                tf4.setText("");
                tf5.setText("");
                }
                catch(Exception a)
      {
          System.out.println(a.getMessage());
      }
            }
            if(obj.equals(newButton))
            {
                //JPanel panel2 = new JPanel(panel2);
                try
                {
                    String dbURL = "jdbc:odbc:" + "pWarehouseDatabase";
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection con = DriverManager.getConnection(dbURL, "","");
        Statement s = con.createStatement();
        NewFrame newFrame = new NewFrame(con);
       // newFrame.setUndecorated(true);
 
                newFrame.setVisible(true);
 
                s.close();
                dispose();
                //setVisible(false);
                }
                catch(Exception t)
                {
 
                }
 
            }
 
            if(obj.equals(deleteButton))
            {
 
                try
                {
                    String dbURL = "jdbc:odbc:" + "pWarehouseDatabase";
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection con = DriverManager.getConnection(dbURL, "","");
        Statement s = con.createStatement();
 
        Object key = table.getValueAt(selectedRow, 0);
        String test = key.toString();
        int number = Integer.parseInt(test);
                //int test = (int)key;
        int response;
 
   response = JOptionPane.showConfirmDialog(null, "Are you sure you want to delete this contact?");
if (response == JOptionPane.YES_OPTION)
    {
 
        System.out.println(number);
 
 
        String strSQL = "DELETE FROM customers WHERE id =" + number;
 
 
            //dispose();
            s.executeUpdate(strSQL);
            System.out.println(" rows effected");
    }
 
       // s.execute("DELETE FROM customers(customerName, customerAddress, customerEmail, customerNumber, customerPurchase) WHERE(id = 'number')";
 
 
 
/*
            s.close();
                    con.close();
                    String dbURL2 = "jdbc:odbc:" + "pWarehouseDatabase";
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection con2 = DriverManager.getConnection(dbURL2, "","");
        Statement s2 = con2.createStatement();
        ResultSet resultSet2 = s2.getResultSet(); // get any ResultSet that came from our query
        ResultSetMetaData metaData2 = resultSet2.getMetaData();
               int numberOfColumns2 =  metaData2.getColumnCount();
               Vector columnNames2 = new Vector();
               for(int column2 = 0; column2 < numberOfColumns2; column2++)
               {
                     columnNames2.addElement(metaData2.getColumnLabel(column2+1));
               }
               Vector rows2 = new Vector();
               while (resultSet2.next())
               {
                    Vector newRow2 = new Vector();
                    for (int i = 1; i <= metaData2.getColumnCount(); i++)
                    {
                         newRow2.addElement(resultSet2.getObject(i));
                    }
                    rows2.addElement(newRow2);
               }
                table = new JTable(rows2, columnNames2);*/
 
            table = createTable();
       GUI gui = new GUI(table,con, columnNames);
 
//GUI gui = new GUI( table, con);
//gui.setVisible(true);
 
        dispose();
     System.out.println("dispose");
 
 
                }
             /* catch(SQLException s){
        System.out.println("SQL statement is not executed!");
      }
*/
    catch (Exception o){
      o.printStackTrace();
    }
 
 
 
            }
            if(obj.equals(repairButton))
            {
 
                NewRepair repair = new NewRepair(con);
                repair.setVisible(true);
                dispose();
            }
            if(obj.equals(editButton))
            {
                dispose();
                 Object key = table.getValueAt(selectedRow, 0);
        String test = key.toString();
        int number = Integer.parseInt(test);
        System.out.println(number);
        //panel2.remove(newButton);
       // panel2.remove(editButton);
        //panel2.remove(deleteButton);
  //panel2.remove(refreshButton);
        //dispose();
JPanel innerPanel;
//innerPanel.setLayout(new GridLayout(15,2));
sf1 = new JTextField();
sf2 = new JTextField();
sf3 = new JTextField();
sf4 = new JTextField();
sf5 = new JTextField();
sf6 = new JTextField();
 sf7 = new JTextField();
sf8 = new JTextField();
sf9 = new JTextField();
System.out.println("EDITING");
try
{
        sf1.setText((String)table.getValueAt(selectedRow, 1));
       sf2.setText((String)table.getValueAt(selectedRow, 2));
       sf3.setText((String)table.getValueAt(selectedRow, 3));
       sf4.setText((String)table.getValueAt(selectedRow, 4));
       sf5.setText((String)table.getValueAt(selectedRow, 5));
       sf6.setText((String)table.getValueAt(selectedRow, 6));
       sf7.setText((String)table.getValueAt(selectedRow, 7));
       sf8.setText((String)table.getValueAt(selectedRow, 8));
       sf9.setText((String)table.getValueAt(selectedRow, 9));
}
catch(Exception er)
{
    System.out.println("This one is empty too");
}
       //System.out.println(table.getValueAt(selectedRow, 8));
        innerPanel = new JPanel();
        innerPanel.setLayout(new GridLayout(15,2));
        innerPanel.add(new JLabel("Customer First Name"));
        //innerPanel.add(addButton);
        //innerPanel.add(newButton);
        innerPanel.add(sf1);
        innerPanel.add(new JLabel("Customer Last Name"));
        innerPanel.add(sf2);
 
         innerPanel.add(new JLabel("Customer Address"));
        innerPanel.add(sf3);
        innerPanel.add(new JLabel("Customer Email"));
        innerPanel.add(sf4);
        innerPanel.add(new JLabel("Customer Phone"));
        innerPanel.add(sf5);
        innerPanel.add(new JLabel("Customer Purchase"));
        innerPanel.add(sf6);
        innerPanel.add(new JLabel("Customer Purchase Price"));
        innerPanel.add(sf7);
        innerPanel.add(new JLabel("Customer Purchase Date"));
        innerPanel.add(sf8);
        innerPanel.add(new JLabel("Purchase or Repair"));
        innerPanel.add(sf9);
        //innerPanel.add(purchaseScroll);
        //innerPanel.add(addButton);
        //innerPanel.add(cancelButton);
        //add(innerPanel);
        EditFrame editFrame = new EditFrame(number, innerPanel, sf1, sf2, sf3, sf4, sf5, sf6, sf7, sf8, sf9);
            }
 
            if(obj.equals(refreshButton))
        {
            try
            {
 
                //s.close();
 
                    //con.close();
                     System.out.println("here i AM");
                    String dbURL = "jdbc:odbc:" + "pWarehouseDatabase";
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
         con = DriverManager.getConnection(dbURL, "","");
         s = con.createStatement();
 
         s.execute("select * from customers ORDER BY customerLastName"); // create a table * from customers
        //s.execute("insert into TEST12345 values(1)"); // insert some data into the table
        //s.execute("select column_name from TEST12345"); // select the data from the table
        ResultSet resultSet = s.getResultSet(); // get any ResultSet that came from our query
        ResultSetMetaData metaData = resultSet.getMetaData();
               int numberOfColumns =  metaData.getColumnCount();
               Vector columnNames = new Vector();
               for(int column = 0; column < numberOfColumns; column++)
               {
                     columnNames.addElement(metaData.getColumnLabel(column+1));
               }
               Vector rows = new Vector();
               while (resultSet.next())
               {
                    Vector newRow = new Vector();
                    for (int i = 1; i <= metaData.getColumnCount(); i++)
                    {
                         newRow.addElement(resultSet.getObject(i));
                    }
                    rows.addElement(newRow);
               }
               JTable table = new JTable(rows, columnNames);
               dispose();
GUI gui = new GUI( table, con, columnNames);
gui.setVisible(true);
        }
            catch(Exception i)
            {
 
            }
    }
 
        }
    }
}
 

[brendanmcdonagh]

I really hope you haven't gone through all that - I just scanned through it noticed the label to show the last column wasn't initialized - doh!

Sorry to waste your time Jos

[JosAH]

@brendanmcdonagh
I just skimmed through it, no need to say sorry; here's a little tip: don't just do this:

try {
   ...
catch (Exception e) {
   System.out.println("A short message");
}
 

... but do this instead:

try {
   ...
catch (Exception e) {
   e.printStackTrace();
}
 

You're still debugging and those exceptions are not to be thrown; if they are you want to know all about ithem, including the cause of them. The stack trace shows you exactly what happened and where it happened.

kind regards,

Jos

[brendanmcdonagh]

cheers for that Jos, I'll be using your recommendation from now on.

Regards
Brendan