Button panel replaced by JTable result set

Question

Hi guys. Here's the problem. Below is my current working code.
When run - a JOption pane opens, into which I type the database location (using /'s instead of \'s as it is a String input).
The main UI opens. That indicates that the connection was successful. The UI consists of a JPanel (north) containg a number of buttons. Below that is a space for a JTable. Each button represents a diiferent query to the database and a different result set is displayed in the JTable beneath the buttons depending on which button is clicked.
This all works fine.
However I would like to now modify the code so that when the program runs the user is faced with the JPanel containing the Buttons only. And when a button is clicked the current panel is replaced with a full JTable containing the result set.
So basically I want a JPanel with a number of buttons. Once clicked the result set JTable is displayed fully in the JFrame possibly with another button to bring the user back to the initial button panel.
import java.io.*;
import java.sql.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.table.*;
public class Test12 extends JFrame {
// java.sql types needed for database processing
private Connection connection;
private Statement statement;
private ResultSet resultSet;
private ResultSetMetaData rsMetaData;
// javax.swing types needed for GUI
private JTable table;
private JTextArea inputQuery;
public Test12()
super( "Johnny Project" );
// The URL specifying the Books database to which
// this program connects using JDBC to connect to a
// Microsoft ODBC database.
// Load the driver to allow connection to the database
try {
     Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
     String myFilename = JOptionPane.showInputDialog("Enter Database Location");
               String myDatabase = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=";
               myDatabase+= myFilename.trim() + ";DriverID=22;READONLY=true}";
               connection = DriverManager.getConnection(myDatabase,"","");
catch ( ClassNotFoundException cnfex ) {
System.err.println(
"Failed to load JDBC/ODBC driver." );
cnfex.printStackTrace();
System.exit( 1 ); // terminate program
catch ( SQLException sqlex ) {
System.err.println( "Unable to connect" );
sqlex.printStackTrace();
System.exit( 1 ); // terminate program
          //If connection succeeds - build GUI
          buildMenu();
          buildGUI();
          setSize(800, 800);
          show();
private void getTable(String recievedQuery)
try {
String query = recievedQuery;
statement = connection.createStatement();
resultSet = statement.executeQuery(query);
displayResultSet(resultSet);
catch (SQLException sqlex) {
sqlex.printStackTrace();
private void displayResultSet(ResultSet rs)
throws SQLException
// position to first record
boolean moreRecords = rs.next();
// If there are no records, display a message
if (! moreRecords) {
JOptionPane.showMessageDialog( this,
"ResultSet contained no records" );
setTitle( "No records to display" );
return;
Vector columnHeads = new Vector();
Vector rows = new Vector();
try {
// get column heads
ResultSetMetaData rsmd = rs.getMetaData();
for ( int i = 1; i <= rsmd.getColumnCount(); ++i )
columnHeads.addElement( rsmd.getColumnName( i ) );
// get row data
do {
rows.addElement( getNextRow( rs, rsmd ) );
} while ( rs.next() );
// display table with ResultSet contents
table = new JTable( rows, columnHeads );
JScrollPane scroller = new JScrollPane( table );
Container c = getContentPane();
c.remove( 1 );
c.add( scroller, BorderLayout.CENTER );
c.validate();
catch ( SQLException sqlex ) {
sqlex.printStackTrace();
private Vector getNextRow( ResultSet rs, ResultSetMetaData rsmd )
throws SQLException
Vector currentRow = new Vector();
for ( int i = 1; i <= rsmd.getColumnCount(); ++i )
switch( rsmd.getColumnType( i ) ) {
case Types.VARCHAR:
case Types.LONGVARCHAR:
currentRow.addElement( rs.getString( i ) );
break;
case Types.INTEGER:
currentRow.addElement(
new Long( rs.getLong( i ) ) );
break;
default:
System.out.println( "Type was: " +
rsmd.getColumnTypeName( i ) );
return currentRow;
public void shutDown()
try {
connection.close();
catch ( SQLException sqlex ) {
System.err.println( "Unable to disconnect" );
sqlex.printStackTrace();
private void buildGUI()
          inputQuery = new JTextArea(4, 30);
          Icon people = new ImageIcon("people.gif");
          JButton searchAll = new JButton("All", people);
          searchAll.setToolTipText("Search All People");
          searchAll.setBorder(null);
          searchAll.addActionListener(
     new ActionListener() {
public void actionPerformed(ActionEvent e)
          String searchAllString = new String("Select * from 0001_per_year");
     getTable(searchAllString);
          JButton searchPathway = new JButton("Pathway", people);
          searchPathway.setToolTipText("Search Students by Pathway");     
          searchPathway.setBorder(null);
          searchPathway.addActionListener(
     new ActionListener() {
public void actionPerformed(ActionEvent e)
          String searchPathwayString = new String("Select Student_Number, Pathway from 0001_per_year");
     getTable(searchPathwayString);
          JButton searchPeriod = new JButton("Study", people);
          searchPeriod.setToolTipText("Search Students by Period");     
          searchPeriod.setBorder(null);
          searchPeriod.addActionListener(
     new ActionListener() {
public void actionPerformed(ActionEvent e)
          String searchPeriodString = new String("Select Student_Number, Period_of_Study from 0001_per_year");
     getTable(searchPeriodString);
          JButton searchAttendance = new JButton("Attendance", people);
          searchAttendance.setToolTipText("Search Students by Attendance");     
          searchAttendance.setBorder(null);
          searchAttendance.addActionListener(
     new ActionListener() {
public void actionPerformed(ActionEvent e)
          String searchAttendanceString = new String("Select Student_Number, Attendance_Status from 0001_per_year");
     getTable(searchAttendanceString);
          JLabel j1 = new JLabel ();     
          JLabel j2 = new JLabel ();
          JLabel j3 = new JLabel ();
          JLabel j4 = new JLabel ();
          JLabel j5 = new JLabel ();
          JLabel j6 = new JLabel ();
          JLabel j7 = new JLabel ();
          JLabel j8 = new JLabel ();
          JLabel j9 = new JLabel ();
          JLabel j10 = new JLabel ();
          JLabel j11 =new JLabel ();
          JLabel j12 = new JLabel ();
          GridLayout grid;
          grid = new GridLayout(4,4);
               JPanel topPanel = new JPanel();
          topPanel.setLayout(grid);
          topPanel.add(j1);
          topPanel.add(j2);
          topPanel.add(j3);
          topPanel.add(j4);
          topPanel.add(j5);
          topPanel.add(searchAll);
          topPanel.add(searchPathway);
          topPanel.add(j6);
          topPanel.add(j7);
               topPanel.add(searchPeriod);
               topPanel.add(searchAttendance);
               topPanel.add(j8);
               topPanel.add(j9);
               topPanel.add(j10);
               topPanel.add(j11);
               topPanel.add(j12);
               table = new JTable();
          Container c = getContentPane();
          c.setLayout( new BorderLayout() );
          c.add( topPanel, BorderLayout.NORTH );
          c.add( table, BorderLayout.CENTER );
          show();
private void buildMenu()
JMenuBar myMenuBar = new JMenuBar();
JMenu myFileMenu = new JMenu("File");
JMenuItem myExitItem = new JMenuItem("Exit");
//Exit item closes the application
myExitItem.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent e)
System.exit(0);
myFileMenu.add(myExitItem);
myMenuBar.add(myFileMenu);
setJMenuBar(myMenuBar);
public static void main( String args[] )
final Test12 app = new Test12();
app.addWindowListener(
new WindowAdapter() {
public void windowClosing( WindowEvent e )
app.shutDown();
System.exit( 0 );

Answer 1

Your welcome. I don't really compete for Duke's, but I'm glad the issue is resolved.
- Saish
"My karma ran over your dogma." - Anon