table action listener
[179 byte] By [ThierryHenrya] at [2007-11-27 2:09:08] 
i have a table and i want to create some sort of action listener so that whenever the selected row changes, i can execute method a();does anyone know how to do this?
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Here is some code:
ListSelectionModel listMod = table.getSelectionModel();
listMod.addListSelectionListener(this);
and then:
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting()) {
a();
}
}
Satanduvela at 2007-7-12 1:59:12 >
i keep getting an errorillegal start of expressionat the line where i put the method public void valueChanged(ListSelectionEvent e)where am i supposed to put the method?
ThierryHenrya at 2007-7-12 1:59:12 >
The bold } is the last } of your program code: so you put the code wright before the last } like this:public void valueChanged(ListSelectionEvent e) {if (!e.getValueIsAdjusting()) {a();}}}
Satanduvela at 2007-7-12 1:59:12 >
thanks for that,where do i put the other two lines....just above it?
ThierryHenrya at 2007-7-12 1:59:12 >
No wright under where you make you're Jtabletable = new JTable(); //here you make your JTableand thenListSelectionModel listMod = table.getSelectionModel();listMod.addListSelectionListener(this);Satanduvel
Satanduvela at 2007-7-12 1:59:12 >
i done that and i keep getting the error message<identifier> expected
ThierryHenrya at 2007-7-12 1:59:12 >
where do you get this line?Post some code from your program so i can see a bitSatanduvel
Satanduvela at 2007-7-12 1:59:12 >
public class ViewDeclinedRequests extends MainMenu {
private String[] columnNames = {"REQUEST ID", "STATUS", "BANK NAME", "EMPLOYEE FIRST NAME", "EMPLOYEE LAST NAME", "CURRENCY REQUESTED", "AMOUNT REQUESTED", "CURRENCY OFFERED", "AMOUNT OFFERED", "TIME REQUESTED", "DATE REQUESTED"};
private Object[][] data = new Object [50] [50];
private JTable table = new JTable(data, columnNames);
private JScrollPane scrollPane = new JScrollPane(table);
ListSelectionModel listMod = table.getSelectionModel();
listMod.addListSelectionListener(table);
public ViewDeclinedRequests() {
//code here
}
//
method where GUI is constructed
public void assembleComponnents() {
}
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting())
{
}
}
}
ThierryHenrya at 2007-7-12 1:59:12 >
First off all: do you import javax.swing.event.*; at the top of your code?Second: try==> public class ViewDeclinedRequests extends MainMenu implements ListSelectionListener {Thats what i see that can be wrongSatanduvelPS: use stars to attract more people to
Satanduvela at 2007-7-12 1:59:12 >
no neither of those worked
i know u probably dont wanna see this but i am gonna post all the cde maybe u can see something wrong with it
package GUI;
import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.text.*;
import java.awt.event.*;
import java.awt.color.*;
import javax.swing.border.*;
import javax.swing.table.*;
import javax.swing.event.*;
import Database.*;
import java.util.EventObject.*;
/**
* Represent the Create New Customer menu screen.
*
* @author Neroo Technologies
* @version 14-03-06
*/
public class ViewDeclinedRequests extends MainMenu implements ListSelectionListener{
// instance variables
private static final Font MEDIUM_FONT = new Font("Times New Roman", Font.BOLD, 28);
private static final Font SMALL_FONT = new Font("Times New Roman", Font.BOLD, 13);
private static final Font REGULAR_FONT = new Font("Arial", Font.PLAIN, 11);
private JLabel titleLabel = new JLabel("VIEW DECLINED");
private JLabel titleLabel2 = new JLabel("REQUESTS");
private JLabel selectionLabel = new JLabel("SELECTION");
private JLabel messageLabel = new JLabel("MESSAGE:");
private JButton returnToMainMenuButton = new JButton(" Return To Main Menu ");
public JButton helpButton = new JButton("HELP");
private JLabel employeeDetailsLabel = new JLabel("COMPLETED REQUESTS");
private JTextArea messageArea = new JTextArea();
private JPanel matchDetailsPanel = new JPanel();
private String[] columnNames = {"REQUEST ID", "STATUS", "BANK NAME", "EMPLOYEE FIRST NAME", "EMPLOYEE LAST NAME", "CURRENCY REQUESTED", "AMOUNT REQUESTED", "CURRENCY OFFERED", "AMOUNT OFFERED", "TIME REQUESTED", "DATE REQUESTED"};
private Object[][] data = new Object [50] [50];
private JTable table = new JTable(data, columnNames);
private JScrollPane scrollPane = new JScrollPane(table);
ListSelectionModel listMod = table.getSelectionModel();
listMod.addListSelectionListener(this);
private Date date = new Date();
private Date time = new Date();
private String name;
private String employeeID;
private String userName;
private String bankName;
private String bankID;
private String totalRequested;
/*
* Constructor for EditExistingUserAccount
*/
public ViewDeclinedRequests() {
super();
setSize(800,705);
// Place the frame at the center of the screen
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
this.setLocation(d.width/2 - this.getWidth()/2, d.height/2 - this.getHeight()/2);
setVisible(true);
name = "";
employeeID = "";
userName = "";
bankName = "";
bankID = "";
totalRequested = "";
//System.out.println(name + "...." + employeeID + "...." + userName);
}
/*
* Assemble all componnents together by adding them to the container
*/
public void assembleComponnents() {
// Set the Content Pane to have a Border Layout
Container contentPane = this.getContentPane();
contentPane.setLayout(null);
// Get the pixel coordinates of the panel edges
Insets insets = contentPane.getInsets();
// Set font size and colour to texts, then add them to contentPane
titleLabel.setFont(MEDIUM_FONT);
titleLabel.setForeground(new Color(200, 10, 50));
contentPane.add(titleLabel);
titleLabel2.setFont(MEDIUM_FONT);
titleLabel2.setForeground(new Color(200, 10, 50));
contentPane.add(titleLabel2);
employeeDetailsLabel.setFont(SMALL_FONT);
employeeDetailsLabel.setForeground(new Color(200, 10, 50));
contentPane.add(employeeDetailsLabel);
messageLabel.setFont(SMALL_FONT);
messageLabel.setForeground(new Color(200, 10, 50));
contentPane.add(messageLabel);
messageArea.setFont(REGULAR_FONT);
contentPane.add(messageArea);
contentPane.add(scrollPane);
table.setPreferredScrollableViewportSize(new Dimension(695, 150));
scrollPane.getVerticalScrollBar().setUnitIncrement(10);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
matchDetailsPanel.setBorder(new LineBorder(new Color(200, 10, 50), 1));
contentPane.add(matchDetailsPanel);
matchDetailsPanel.setLayout(null);
// Set date and time
DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
JLabel dateLabel = new JLabel(df.format(date));
contentPane.add(dateLabel);
DateFormat tf = DateFormat.getTimeInstance(DateFormat.DEFAULT);
JLabel timeLabel = new JLabel(tf.format(time));
contentPane.add(timeLabel);
// Add buttons to contentPane
contentPane.add(helpButton);
contentPane.add(returnToMainMenuButton);
displayValues();
Dimension size;
// Fix date label position
size = dateLabel.getPreferredSize();
dateLabel.setBounds(700 + insets.left, 20 + insets.top, size.width, size.height);
// Fix time label position
size = timeLabel.getPreferredSize();
timeLabel.setBounds(700 + insets.left, 40 + insets.top, size.width, size.height);
// Fix title label position
size = titleLabel.getPreferredSize();
titleLabel.setBounds(310 + insets.left, 30 + insets.top, size.width, size.height);
// Fix title label 2 position
size = titleLabel2.getPreferredSize();
titleLabel2.setBounds(365 + insets.left, 60 + insets.top, size.width, size.height);
// Fix account holder name label position
size = employeeDetailsLabel.getPreferredSize();
employeeDetailsLabel.setBounds(40 + insets.left, 85 + insets.top, size.width, size.height);
// Fix title label 2 position
size = matchDetailsPanel.getPreferredSize();
matchDetailsPanel.setBounds(30 + insets.left, 110 + insets.top, size.width + 730, size.height + 420);
// Fix table's scrollpane position
size = scrollPane.getPreferredSize();
scrollPane.setBounds(40 + insets.left, 120 + insets.top, size.width, size.height + 100);
// Fix table's scrollpane position
size = messageLabel.getPreferredSize();
messageLabel.setBounds(40 + insets.left, 410 + insets.top, size.width, size.height);
// Fix table's scrollpane position
size = messageArea.getPreferredSize();
messageArea.setBounds(40 + insets.left, 430 + insets.top, size.width + 710, size.height + 70);
// Fix return to main menu button position
size = returnToMainMenuButton.getPreferredSize();
returnToMainMenuButton.setBounds(625 + insets.left, 601 + insets.top, size.width, size.height);
// Fix help button position
size = helpButton.getPreferredSize();
helpButton.setBounds(15 + insets.left, 601 + insets.top, size.width, size.height);
setVisible(true);
populateTable();
ListSelectionModel listMod = table.getSelectionModel();
listMod.addListSelectionListener(table);
// public void valueChanged(ListSelectionEvent e) {
// if (!e.getValueIsAdjusting())
// {
//
// }
//}
helpButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
}
});
returnToMainMenuButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
MainMenu mMenu = new MainMenu();
mMenu.assembleComponnents();
setVisible(false);
}
});
}
private void populateTable() {
TableColumn column = null;
for (int i = 0; i < 11; i++)
{
column = table.getColumnModel().getColumn(i);
if (i == 0)
{
column.setPreferredWidth(100);
}
if (i == 1)
{
column.setPreferredWidth(100);
}
if (i == 2)
{
column.setPreferredWidth(100);
}
if (i == 3)
{
column.setPreferredWidth(175);
}
if (i == 4)
{
column.setPreferredWidth(175);
}
if (i == 5)
{
column.setPreferredWidth(160);
}
if (i == 6)
{
column.setPreferredWidth(150);
}
if (i == 7)
{
column.setPreferredWidth(150);
}
if (i == 8)
{
column.setPreferredWidth(130);
}
if (i == 9)
{
column.setPreferredWidth(150);
}
if (i == 10)
{
column.setPreferredWidth(150);
}
}
}
private void displayValues() {
AccountQueries aQueries = new AccountQueries();
String bName = aQueries.queryBrokerName(currentLoggedUser);
System.out.println(bName + "......" + currentLoggedUser);
RequestQueries rQueries = new RequestQueries();
if (rQueries.completedSize(bName) > 0)
{
String output = rQueries.queryDeclined(bName);
System.out.println(output);
String [] valuesArray = output.split("/n");
int index = 0;
if (valuesArray.length > index)
{
int col = 0;
int row = 0;
while (col < 11)
{
table.setValueAt(valuesArray[index], row, col);
index++;
col++;
}
row++;
col = 0;
}
}
else
{
{
JOptionPane.showMessageDialog(
null,
"There are no Completed Requests\n" +
"\n",
"NO COMPLETED REQUESTS",
JOptionPane.INFORMATION_MESSAGE);
}
MainMenu mMenu = new MainMenu();
mMenu.assembleComponnents();
setVisible(false);
}
}
ListSelectionModel listMod = table.getSelectionModel();
listMod.addListSelectionListener(this);
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting())
{
}
}
}
ThierryHenrya at 2007-7-12 1:59:12 >
eum I see that you at the bottom of the code you again do
ListSelectionModel listMod = table.getSelectionModel();
listMod.addListSelectionListener(this);
this lines must be deleted!
And if than the program not work look at what line the error is occuring?
Or give here the error what is presenting.
Satanduvel
Satanduvela at 2007-7-12 1:59:12 >
i deleted that, but i still get the same error message<identifier> expected
ThierryHenrya at 2007-7-12 1:59:13 >
yes ok but at whitch line of the code is this error presented?
Satanduvela at 2007-7-12 1:59:13 >
the line which is getting the error islistMod.addListSelectionListener(table);
ThierryHenrya at 2007-7-12 1:59:13 >
srry i don't see the problem maybe you should google a bit on the ListSelectionModel.Satanduvel
Satanduvela at 2007-7-21 20:19:45 >
Try this one dude:
package GUI;
import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.text.*;
import java.awt.event.*;
import java.awt.color.*;
import javax.swing.border.*;
import javax.swing.table.*;
import javax.swing.event.*;
import Database.*;
import java.util.EventObject.*;
/**
* Represent the Create New Customer menu screen.
*
* @author Neroo Technologies
* @version 14-03-06
*/
public class ViewDeclinedRequests extends MainMenu implements
ListSelectionListener {
// instance variables
private static final Font MEDIUM_FONT = new Font("Times New Roman",
Font.BOLD, 28);
private static final Font SMALL_FONT = new Font("Times New Roman",
Font.BOLD, 13);
private static final Font REGULAR_FONT = new Font("Arial", Font.PLAIN, 11);
private JLabel titleLabel = new JLabel("VIEW DECLINED");
private JLabel titleLabel2 = new JLabel("REQUESTS");
private JLabel selectionLabel = new JLabel("SELECTION");
private JLabel messageLabel = new JLabel("MESSAGE:");
private JButton returnToMainMenuButton = new JButton(
" Return To Main Menu ");
public JButton helpButton = new JButton("HELP");
private JLabel employeeDetailsLabel = new JLabel("COMPLETED REQUESTS");
private JTextArea messageArea = new JTextArea();
private JPanel matchDetailsPanel = new JPanel();
private String[] columnNames = { "REQUEST ID", "STATUS", "BANK NAME",
"EMPLOYEE FIRST NAME", "EMPLOYEE LAST NAME", "CURRENCY REQUESTED",
"AMOUNT REQUESTED", "CURRENCY OFFERED", "AMOUNT OFFERED",
"TIME REQUESTED", "DATE REQUESTED" };
private Object[][] data = new Object[50][50];
private JTable table = new JTable(data, columnNames);
private JScrollPane scrollPane = new JScrollPane(table);
private Date date = new Date();
private Date time = new Date();
private String name;
private String employeeID;
private String userName;
private String bankName;
private String bankID;
private String totalRequested;
/*Delete this eh?
* Constructor for EditExistingUserAccount
*/
public ViewDeclinedRequests() {
//What are you sending to the parent constructor?
super();
setSize(800, 705);
// Place the frame at the center of the screen
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
this.setLocation(d.width / 2 - this.getWidth() / 2, d.height / 2
- this.getHeight() / 2);
setVisible(true);
name = "";
employeeID = "";
userName = "";
bankName = "";
bankID = "";
totalRequested = "";
// System.out.println(name + "...." + employeeID + "...." + userName);
}
/*
* Assemble all componnents together by adding them to the container
*/
public void assembleComponents() {
// Set the Content Pane to have a Border Layout
Container contentPane = this.getContentPane();
contentPane.setLayout(null);
// Get the pixel coordinates of the panel edges
Insets insets = contentPane.getInsets();
// Set font size and colour to texts, then add them to contentPane
titleLabel.setFont(MEDIUM_FONT);
titleLabel.setForeground(new Color(200, 10, 50));
contentPane.add(titleLabel);
titleLabel2.setFont(MEDIUM_FONT);
titleLabel2.setForeground(new Color(200, 10, 50));
contentPane.add(titleLabel2);
employeeDetailsLabel.setFont(SMALL_FONT);
employeeDetailsLabel.setForeground(new Color(200, 10, 50));
contentPane.add(employeeDetailsLabel);
messageLabel.setFont(SMALL_FONT);
messageLabel.setForeground(new Color(200, 10, 50));
contentPane.add(messageLabel);
messageArea.setFont(REGULAR_FONT);
contentPane.add(messageArea);
contentPane.add(scrollPane);
table.setPreferredScrollableViewportSize(new Dimension(695, 150));
scrollPane.getVerticalScrollBar().setUnitIncrement(10);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
matchDetailsPanel.setBorder(new LineBorder(new Color(200, 10, 50), 1));
contentPane.add(matchDetailsPanel);
matchDetailsPanel.setLayout(null);
// Set date and time
DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
JLabel dateLabel = new JLabel(df.format(date));
contentPane.add(dateLabel);
DateFormat tf = DateFormat.getTimeInstance(DateFormat.DEFAULT);
JLabel timeLabel = new JLabel(tf.format(time));
contentPane.add(timeLabel);
// Add buttons to contentPane
contentPane.add(helpButton);
contentPane.add(returnToMainMenuButton);
displayValues();
Dimension size;
// Fix date label position
size = dateLabel.getPreferredSize();
dateLabel.setBounds(700 + insets.left, 20 + insets.top, size.width,
size.height);
// Fix time label position
size = timeLabel.getPreferredSize();
timeLabel.setBounds(700 + insets.left, 40 + insets.top, size.width,
size.height);
// Fix title label position
size = titleLabel.getPreferredSize();
titleLabel.setBounds(310 + insets.left, 30 + insets.top, size.width,
size.height);
// Fix title label 2 position
size = titleLabel2.getPreferredSize();
titleLabel2.setBounds(365 + insets.left, 60 + insets.top, size.width,
size.height);
// Fix account holder name label position
size = employeeDetailsLabel.getPreferredSize();
employeeDetailsLabel.setBounds(40 + insets.left, 85 + insets.top,
size.width, size.height);
// Fix title label 2 position
size = matchDetailsPanel.getPreferredSize();
matchDetailsPanel.setBounds(30 + insets.left, 110 + insets.top,
size.width + 730, size.height + 420);
// Fix table's scrollpane position
size = scrollPane.getPreferredSize();
scrollPane.setBounds(40 + insets.left, 120 + insets.top, size.width,
size.height + 100);
// Fix table's scrollpane position
size = messageLabel.getPreferredSize();
messageLabel.setBounds(40 + insets.left, 410 + insets.top, size.width,
size.height);
// Fix table's scrollpane position
size = messageArea.getPreferredSize();
messageArea.setBounds(40 + insets.left, 430 + insets.top,
size.width + 710, size.height + 70);
// Fix return to main menu button position
size = returnToMainMenuButton.getPreferredSize();
returnToMainMenuButton.setBounds(625 + insets.left, 601 + insets.top,
size.width, size.height);
// Fix help button position
size = helpButton.getPreferredSize();
helpButton.setBounds(15 + insets.left, 601 + insets.top, size.width,
size.height);
setVisible(true);
populateTable();
ListSelectionModel listMod = table.getSelectionModel();
listMod.addListSelectionListener(this);
helpButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
returnToMainMenuButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
MainMenu mMenu = new MainMenu();
mMenu.assembleComponents();
//are you setting the ActionListener to invisible?
setVisible(false);
}
});
}
private void populateTable() {
TableColumn column = null;
for (int i = 0; i < 11; i++) {
column = table.getColumnModel().getColumn(i);
if (i == 0) {
column.setPreferredWidth(100);
}
if (i == 1) {
column.setPreferredWidth(100);
}
if (i == 2) {
column.setPreferredWidth(100);
}
if (i == 3) {
column.setPreferredWidth(175);
}
if (i == 4) {
column.setPreferredWidth(175);
}
if (i == 5) {
column.setPreferredWidth(160);
}
if (i == 6) {
column.setPreferredWidth(150);
}
if (i == 7) {
column.setPreferredWidth(150);
}
if (i == 8) {
column.setPreferredWidth(130);
}
if (i == 9) {
column.setPreferredWidth(150);
}
if (i == 10) {
column.setPreferredWidth(150);
}
}
}
private void displayValues() {
AccountQueries aQueries = new AccountQueries();
String bName = aQueries.queryBrokerName(currentLoggedUser);
System.out.println(bName + "......" + currentLoggedUser);
RequestQueries rQueries = new RequestQueries();
if (rQueries.completedSize(bName) > 0) {
String output = rQueries.queryDeclined(bName);
System.out.println(output);
String[] valuesArray = output.split("/n");
int index = 0;
if (valuesArray.length > index) {
int col = 0;
int row = 0;
while (col < 11) {
table.setValueAt(valuesArray[index], row, col);
index++;
col++;
}
row++;
col = 0;
}
} else {
//Why is this in a code block?
{
JOptionPane.showMessageDialog(null,
"There are no Completed Requests\n" + "\n",
"NO COMPLETED REQUESTS",
JOptionPane.INFORMATION_MESSAGE);
}
MainMenu mMenu = new MainMenu();
//Does a MainMenu Object contain the method assembleComponents?
//Because it is declared locally in this class.
//Maybe you mean:
//MainMenu mMenu = new ViewDeclinedRequests();
mMenu.assembleComponents();
setVisible(false);
}
}
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting()) {
}
}
}
grizlya at 2007-7-21 20:19:46 >
Swing related questions should be posted in the Swing forum.
> i know u probably dont wanna see this but i am gonna post all the cde maybe u can see something wrong with it
If you need further help then you need to create a [url http://homepage1.nifty.com/algafield/sscce.html]Short, Self Contained, Compilable and Executable, Example Program[/url] (SSCCE) that demonstrates the incorrect behaviour, because I can't guess exactly what you are doing based on the information provided.
Don't forget to use the [url http://forum.java.sun.com/help.jspa?sec=formatting]Code Formatting Tags[/url] so the posted code retains its original formatting.
camickra at 2007-7-21 20:19:46 >
ok cheers for that, i will try and get an exectuable version and post it here, and i will remember to post swing related topics in the swin forum.
ThierryHenrya at 2007-7-21 20:19:46 >
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