Button events

Question

Hi
Please can anyone help. I put a table button in a GUI and tried to open the table in a separate GUI. The data for this table is stored somewhere but when I click on the table button nothing happens. Some of the other buttons: next exercise, exit are not working either. What am I doing wrong?
Any help will be most appreciated.
Thanks
Sofia
ExerciseGUI - contains tableGUI button and other buttons
TableGUI
TableDBHandler
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.awt.Component;
import javax.swing.text.*;
import javax.swing.table.*;
public class ExerciseGUI extends JFrame {
JTable table = new JTable(5,3); JLabel tableLabel = new JLabel ("Customer Table");
JTextField exerciseName = new JTextField(40); JLabel
exerciseNameLabel = new JLabel("Exercise Name");
JTextField questionNum = new JTextField(10); JLabel questionNumLabel = new JLabel("Question Number");
Font font = new Font("times new roman", Font.BOLD, 30);
JTextArea question = new JTextArea(5,36); JLabel questionLabel = new JLabel("Question");
JTextField answer = new JTextField(36); JLabel answerLabel     = new JLabel("Student Answer");
JButton accept          = new JButton();
JButton copy = new JButton(); //JScrollBar scroll = new JScrollBar();
JButton next = new JButton();
JButton close = new JButton();
JButton table = new JButton();
     JPanel questPanel     = new JPanel();
     JPanel answPanel     = new JPanel();
     JPanel mainPanel     = new JPanel();
JScrollPane scrollPane = new JScrollPane(question);
JLabel wordsLabel = new JLabel("Select words");
JTextField wordList = new JTextField();
TableGUI aTableGUI= new TableGUI();
JLabel sortWordsLabel = new JLabel(" Sort these items to form the correct SQL query statement in answer.");
public static final int DISPOSE_ON_CLOSE = 2;
     FlowLayout myLayout = new FlowLayout(FlowLayout.LEFT);
     public ExerciseGUI() {
     try {
setDisplay();
setSize(600,500);
}catch(Exception e) {e.printStackTrace();}
     public static void setNativeLookAndFeel() {
try {
     UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
     catch(Exception e) {
     System.out.println("Error setting native LAF: " + e);
     private void setQuestionPanel() {
          questPanel.setBorder(BorderFactory.createTitledBorder("QUESTION"));
          questPanel.setLayout(myLayout);
          questPanel.setMinimumSize(new Dimension(450,300));
          questPanel.setPreferredSize(new Dimension(450,300));
          questPanel.setMaximumSize(new Dimension(450,300));
questPanel.add(exerciseNameLabel);
     questPanel.add(exerciseName);
questPanel.add(questionNumLabel);
     questPanel.add(questionNum);
questPanel.add(questionLabel);
boolean aWrap = true;
questPanel.add(question);
     questPanel.add(tableLabel);
questPanel.add(table);
JButton aButton = new JButton();
     questPanel.add(aButton, null);
aButton.setText("Table");
aButton.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
aButton_mouseClicked(e);
void aButton_mouseClicked(MouseEvent e) {
tableGUI aTableGUI= new tableGUI();
     private void setAnswerPanel() {
          answPanel.setBorder(BorderFactory.createTitledBorder("ANSWER"));
          answPanel.setLayout(myLayout);
          answPanel.setMinimumSize(new Dimension(400,200));
          answPanel.setPreferredSize(new Dimension(400,200));
          answPanel.setMaximumSize(new Dimension(400,200));
     answPanel.add(sortWordsLabel);
copy.setText("Select");
          copy.setSize(2,30);
answPanel.add(copy);
copy.addMouseListener(new MouseAdapter() {
          public void mouseClicked(MouseEvent e) {
     copy_mouseClicked(e);
answPanel.add(answerLabel);
          answPanel.add(answer);
accept.setText("Evaluate Answer");
          accept.setSize(2,30);
accept.addMouseListener(new MouseAdapter() {
          public void mouseClicked(MouseEvent e) {
accept_mouseClicked(e);
next.setText("Next Exercise");
next.setSize(2, 20);
next.addMouseListener(new MouseAdapter() {
          public void mouseClicked(MouseEvent e) {
next_mouseClicked(e);
close.setText("Exit Tutorial");
close.setSize(2, 20);
close.addMouseListener(new MouseAdapter() {
          public void mouseClicked(MouseEvent e) {
close_mouseClicked(e);
     answPanel.add(accept);
answPanel.add(next, null);
answPanel.add(close, null);
     private void setDisplay() throws Exception {
          setNativeLookAndFeel();
          Container content = getContentPane();
          //content.setMiniumSize(new Dimension(400,400));
          //content.setPreferredSize(new dimension(400,400));
          content.setLayout(new GridLayout(0,1));
          content.setFont(font);
          content.setBackground(Color.lightGray);
this.setTitle("Display Exercise");
setQuestionPanel();
          setAnswerPanel();
          content.add(questPanel);
          content.add(answPanel);
          setContentPane(content);
/* exerciseGUI.setDefaultCloseOperation(
WindowConstants.DISPOSE_ON_CLOSE);
exerciseGUI.addWindowListener() {
public void windowClosed(WindowEvent e){
system.exit(20);
String studentAnswer;
void accept_mouseClicked(MouseEvent e) {
String studentAnswer = answer.getText();
DBHandler aDBHandler = new DBHandler(questionNum.getText(), studentAnswer);
void copy_mouseClicked(MouseEvent e) {
wordList.copy();
answer.paste();
answer.append("");
void next_mouseClicked(MouseEvent e) {
System.out.println("Starting Search_GUI...");
          ExerciseSelectorGUI aGUI = new ExerciseSelectorGUI();
aGUI.show();
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.awt.Component;
import javax.swing.text.*;
import javax.swing.table.*;
public class TableGUI extends JFrame {
JTable table = new JTable(5,3); JLabel tableLabel = new JLabel("Customer Table");
     Font font          = new Font("times new roman", Font.BOLD, 30);
     JPanel tabPanel     = new JPanel();
     JPanel mainPanel     = new JPanel();
TableDBHandler aTableDBHandler;
     FlowLayout myLayout = new FlowLayout(FlowLayout.LEFT);
     public TableGUI() {
     try {
setDisplay();
setSize(500,400);
}catch(Exception e) {e.printStackTrace();}
     public static void setNativeLookAndFeel() {
try {
     UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
     catch(Exception e) {
     System.out.println("Error setting native LAF: " + e);
     private void setTablePanel() {
          tabPanel.setBorder(BorderFactory.createTitledBorder("TABLE"));
          tabPanel.setLayout(myLayout);
          tabPanel.setMinimumSize(new Dimension(300,200));
          tabPanel.setPreferredSize(new Dimension(300,200));
          tabPanel.setMaximumSize(new Dimension(300,200));
tabPanel.add(tableLabel);
tabPanel.add(table);
/*copy.setText("Select");
          copy.setSize(2,30);
     copy.addMouseListener(new MouseAdapter() {
          public void mouseClicked(MouseEvent e) {
copy_mouseClicked(e);
     questPanel.add(copy);*/
     private void setDisplay() throws Exception {
          setNativeLookAndFeel();
          Container content = getContentPane();
          //content.setMiniumSize(new Dimension(400,400));
          //content.setPreferredSize(new dimension(400,400));
          content.setLayout(new GridLayout(0,1));
          content.setFont(font);
          content.setBackground(Color.lightGray);
this.setTitle("Display Table");
setTablePanel();
          content.add(tabPanel);
          setContentPane(content);
import java.awt.*;
import javax.swing.*;
import java.sql.*;
import java.lang.*;
import javax.swing.table.*;
public class TableDBHandler {
TableGUI customTable = new TableGUI ();
public TableDBHandler() {
try {
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
Connection aConnection = DriverManager.getConnection("jdbc:odbc:SQLDatabase", "", "");
Statement aStatement = aConnection.createStatement();
ResultSet aSet = aStatement.executeQuery ("SELECT CustomerNo, Name, Address FROM CustTable"); {
while (aSet.next());
customTable.addItem(aSet.get(setText));
//aGUI.customerNo.setText(k);
//aGUI.name.setText(l);
//set text one under another
//aGUI.address.setText(m);
customTable.show();
aConnection.close();
catch (SQLException e) { System.exit(8);}

Answer 1

Hi,
didn't read all of your code, but one problem is that you use the same name for the JTable and the JButton (both are named table. You should avoid this, personnally I often use the first letter(s) of a variable name to explain wich class it come from... for example, bNew (or JbNew) for a NEW JButton, tNames (or jtUsers) for a USERS JTable.
Hope this helps,
Regards.