Regarding JComboBox

Hello,
Can ynay one tell me how exactly this JComboBox behaves regarding regarding the mouse listeners and key listeners.
I have a JComboBox element the ActionListener for this works very well but I made the JComboBox editable and the I add KeyListener to the JComboBox element to implement a feature to activate a button when we type something in the JComboBox
Now my second question is can't I implement mouseListeners to this JComboBox field.
If any one knows can you please help me by posting a small example on how to implemet KeyListeners and MouseListeners on JComboBox
Best Regards,
Sreedhar

Hello..
That really works you have done a great help to me. But I have one doubt it works well for default MouseListeners, but when I introduceda MouseAdapater and try to implement that it does'nt works. Do you know why this is so.
Any now I'm using a default MouseListener but for a userdefined MouseAdapter it is not working.
Thank you once again.
Best Regards,
Sreedhar

Similar Messages

Question regarding jComboboxes

Hi,
Is there any way to check if the user performed a particular action on the jcombobox that invoked the actionlistener, or the actionlistener was invoked by the program itself?
for example:
if the program has a line of code:
jComboBox1.setSelectedIndex(0);then I do not want to invoke the actionlistener on the jComboBox1, however if the same thing was performed by the user, the control should go over to the actionlistener.
Any clues?

b1l2u3m4 wrote:
Thankyou Michael, I tried doing that, but it doesnt seem to work. This is what I did:
Combobox_Mother_Eth2.removeActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
Combobox_Mother_Eth2ActionPerformed(evt);
Combobox_Mother_Eth2.setSelectedIndex(0);
Combobox_Mother_Eth2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
Combobox_Mother_Eth2ActionPerformed(evt);
});I dont have a name for the ActionListener, because I am using netbeans, it automatically generates the actionperformed event. Is that the right way to do it? I dont know why it does not work...All this will do is to try to remove an ActionListener that was never added in the first place. You need to go to the API for JComboBox and there you will find the methods that may help you: getActionListeners to extract an array of the action listeners that have been added, removeActionListener to remove the actionlisteners held by the array, and then addActionListener to re-add back the ActionListeners held by the array.

A clear workaround for JComboBox bug 4199622 please.

Hi,
I'm writing a project management software where you assign a project leader to a project via combo box and in the same step this user must be added to the team member list. Now look what happened! When I open the combo and navigate via arrow keys all project leaders are added just because they are highlighted. This is very funny but I need only 1 project leader, that which is finally selected by the user. So I've spent several hours looking for a solution and find this amazing bug http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4199622. So regarding JComboBox since 1998 you dont have a way to identify a final selection, is this true (I'm using java 1.6 already)? Anyway, I applied
projectLeadC.putClientProperty("JComboBox.isTableCellEditor", Boolean.TRUE);
and now finally I can make a difference by receiving a new action "comboBoxEdited"
if (event.getActionCommand().equals("comboBoxEdited") && !item.equals(oldItem)) {
pushMember(item);
So now keyboar navigation is ok. But now how can I identify a selection commited by mouse click????? All I get is "comboBoxChanged" but both keyboard and mouse based selections issue this command, so I never know if an item was selected by mouse. I'd need "comboBoxEdited" issued by click or even better something like "CommitedByMouseClick". So can someone help me find a solution, preferably by subclassing JComboBox and fixing the action commands (I dont want to use itemSelectionChange listeners or other listeners just because of this, I dont care which item is selected before commiting, I just care for the action)? Note also, that if my combo is in a table this issue is not that severe, because I can call stopCellEditing on the table which issues a "comboBoxEdited" command.
Thanks for the help,
Marton Bokor

You could use a popup listener to identify the final selection. The popup listener will store the previous selection, and everytime the popup is made invisible you can check whether the new selection is different from the previous selection. If it is, then you notify whoever you need to notify. Example program,
import javax.swing.*;
import javax.swing.event.PopupMenuListener;
import javax.swing.event.PopupMenuEvent;
public class Tester {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new Tester();
    JComboBox theBox;
    public Tester() {
        JFrame frame = new JFrame();
        theBox = new JComboBox(new String[]{"One","Two","Three"});
        theBox.addPopupMenuListener(new FinalSelectionListener());
        frame.setContentPane(theBox);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    private class FinalSelectionListener implements PopupMenuListener {
        private Object oldSelectedItem;
        public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
            Object newSelectedItem = theBox.getSelectedItem();
            if(newSelectedItem != oldSelectedItem) {
                oldSelectedItem = newSelectedItem;
                selectionChanged(newSelectedItem);
        public void popupMenuWillBecomeVisible(PopupMenuEvent e) {}
        public void popupMenuCanceled(PopupMenuEvent e) {}
    private void selectionChanged(Object changedTo) {
        System.out.println("The selection was changed to: " + changedTo);
}This way new selections can be made only when the combo box popup is closed. Hence it will still work with the mouse, and it won't have the action event problem mentioned in the bug.

Please Help regard function that will return values of each JComboBox items

I'd like to create a function that will return values of each item on the JComboBox at a time when
I click on each item of a comboBox. I had this following codes, but didn't work.
Please help me !!!Please correct it... thanks a million
String wp;
String text;
String A[] = {"WARNIGNS","CAUTIONS","NOTES"};
JComboBox ABC = new JComboBox();
for (int i=0;i<A.length;i++) {
ABC.addItem (A);
text = Get_It(); //assigns each value of JComboBox's item to variable text when clicks at each item
//of a comboBOx
private String Get_It(){
ABC.addActionListener(new ActionListener (){
public void actionPerformed(ActionEvent e){
wp = (String)CBweapon.getSelectedItem() ;
return wp;

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class AlertFrame extends JFrame {
String s_alert[] ={"WARNIGNS","CAUTIONS","NOTES"};
JComboBox CBweapon;
String wpText;
public AlertFrame() {
super("Alerts");
Container contentPane = getContentPane();
contentPane.setLayout(null);
setSize(600,600);
CBweapon = new JComboBox();
for (int i=0;i<s_weapon.length;i++) {
CBweapon.addItem (s_weapon);
contentPane.add(CBweapon);
CBweapon.setActionCommand("");
//set position for components
CBweapon.setBounds(370 + insets.left,295+ insets.top, 150,30);
System.out.println(getit()); //calling getit() function
//this function will be return a String of JcomboBOx value if click on each item of combobox
private String getit(){
CBweapon.addActionListener( new ActionListener (){
public void actionPerformed(ActionEvent e){
wpText = (String)CBweapon.getSelectedItem() ;
return wpText;
public static void main(String args[]) {
AlertFrame af = new AlertFrame();
af.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
**I have no errors on compile or run, but it didn't return a string value to System.out.println(getit());
It maybe because of the "void" of public void actionPerformed(ActionEvent e){
wpText = (String)CBweapon.getSelectedItem() ;
Please help me

Associate Action with jcombobox item

Is it possible to associate a particular Action with a jcombobox item (for example using setAction()). When the user selects a particular item of jcombobox, the Action must be triggered.
regards,
Nirvan.

Hi,
You can associate a particular action with a JComboBox. As per my understanding u can add one action perfrom action to combobox or itemStateChanged action
if u add action perform action, u need to add the following method to ur logic.
JComboBox combobox=new JComboBox();
    combobox.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
         JComboBox combo = (JComboBox)evt.getSource();
            if(combo.getSelectedItem().equals("LOCATION")) {
            A a = new A();
            a.show();
        } else if(combo.getSelectedItem().equals("HOUSE")) {
            B b= new B();
            b.show();
        });if action is ItemStateChanged then add the following method.
combobox.addItemListener(new java.awt.event.ItemListener() {
            public void itemStateChanged(java.awt.event.ItemEvent evt) {
                and write your logic here which one needs to be triggered when this action performed.
        });Hope this will help to you....
Thanks & Regards,
Maadhav..

JComboBox.setPopupVisible() and focus

Hello,
the following code demonstrates that always when the combobox is editable and the standard focus sequence is modified, a setPopupVisible(true) indeed opens the popup, but it is immediately closed again. Is anything wrong with the code?
Although there are quite a number of JComboBox bugs in the database, I did not find this one. If it is a bug, of course I would be interested in a workaround.
Regards
J�rg
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Y extends JFrame
private JComboBox cmb;
public Y()
{ setSize(300,300);
    setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    Container cp= getContentPane();
    cp.setLayout(null);
    final JCheckBox cb= new JCheckBox("Combo editable");
    cb.setBounds(80,30,130,20);
    cb.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
     cmb.setEditable(cb.isSelected());
    final JTextField tf1= new JTextField();
    tf1.setBounds(50,60,60,20);
    tf1.addFocusListener(new FocusAdapter() {
      public void focusLost(FocusEvent evt) {
     if (!tf1.getText().equals("ee")) {
       cmb.requestFocusInWindow(); // Prevents popup to stay open.
       cmb.setPopupVisible(true);
       System.out.println(cmb.isVisible());
    JTextField tf2= new JTextField();
    tf2.setBounds(150,60,60,20);
    tf2.addFocusListener(new FocusAdapter() {
      public void focusLost(FocusEvent evt) {
     cmb.setPopupVisible(true);
    cmb = new JComboBox(new String[]{"Item 1", "Item 2", "Item 3", "Item 4"});
    cmb.setBounds(100,90,50,20);
    cmb.setSelectedIndex(-1);
    System.out.println("LightWeight: "+cmb.isLightWeightPopupEnabled());
    cp.add(cb);
    cp.add(tf1);
    cp.add(tf2);
    cp.add(cmb);
    setVisible(true);
    tf1.requestFocusInWindow();
public static void main(String args[])
{ java.awt.EventQueue.invokeLater(new Runnable()
    { public void run()
      { new Y();
}

Well, there's two things I note. The first is you're printing out the comboBox's visible status, which is always true, when you're probably trying to get the comboBox's popup's visible status.
The second thing is the cause of your problem. You request focus on the combo box. When it is editable, however, it is the editor component that gets the focus, not the combo box. So, the popup is made visible and then the editor component loses focus because the combo box gets focus, and so the popup is hidden.
This change does what you want, I think:
    tf1.addFocusListener(new FocusAdapter() {
      public void focusLost(FocusEvent evt) {
    if (!tf1.getText().equals("ee")) {
        if ( cmb.isEditable() )
            cmb.getEditor().getEditorComponent().requestFocusInWindow();
        else
            cmb.requestFocusInWindow(); // Prevents popup to stay open.
      cmb.setPopupVisible(true);
      System.out.println(cmb.isVisible());
    });

JTable with JComboBox

Hi friends,
I am adding JComboBox in JTable its working properly
But data is not adding dynamically to JComboBox
I am Sending my Code plz give me reply
I am Struggleing from 1 week on wards
package com.dnt.autopopulation;
import javax.swing.*;
import java.awt.*;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumn;
import java.awt.event.*;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.event.TableModelEvent;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Locale;
import java.text.SimpleDateFormat;
import java.util.Vector;
import javax.swing.border.*;
import com.dnt.eaip.Connectmagr;
import com.dnt.eaip.*;
import com.dnt.util.*;
import javax.swing.plaf.ButtonUI;
import com.dnt.admin.EndStartDateCheck;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumnModel;
public class AutoPopRollBack extends JPanel {
boolean selection = false;
public static final int HAND_CURSOR = 12;
Cursor cursor = new Cursor(HAND_CURSOR);
int selectedRow = -1;
ImageIcon headertop1 = new ImageIcon("./images/k2topbar.gif");
JLabel HeaderLabe = new JLabel(headertop1);
Border border1 = new EtchedBorder(EtchedBorder.RAISED, Color.white, Color.blue);
Border border2 = BorderFactory.createBevelBorder(BevelBorder.RAISED,
new Color(154, 254, 211), new Color(108, 178, 148),
new Color(37, 60, 50), new Color(53, 87, 72));
DefaultTableModel dm = new DefaultTableModel();
Vector searchlist = new Vector();
Vector rows = new Vector();
Vector returnList;
Connectmagr objConnectmagr = new Connectmagr();
JFrame frame = new JFrame();
JLabel headlab = new JLabel();
JCalendarComboBox EndDateTxt;
JLabel HawbLab = new JLabel();
JTextField HawbTxt = new JTextField();
JLabel AgentLab = new JLabel();
JLabel StartDateLab = new JLabel();
JCalendarComboBox StartDateTxt;
JComboBox AgentLBox = new JComboBox();
JLabel EnddateLab = new JLabel();
JPanel ReviewJobsPane = new JPanel();
JButton SearchBtn = new JButton();
ButtonUI ui = new com.sun.java.swing.plaf.motif.MotifButtonUI();
ArrayList AgentList = new ArrayList();
JComboBox DocTypeLBox = new JComboBox();
JLabel doctypelab = new JLabel();
JPanel displayPanel = new JPanel();
ButtonGroup group1;
JRadioButton rb;
JTable table;
public ArrayList jobList = new ArrayList();
public AutoPopRollBack(JFrame frame, ArrayList agentArrayList) {
this.frame = frame;
this.AgentList = agentArrayList;
try {
jbInit();
} catch (Exception e) {
e.printStackTrace();
public void jbInit() throws Exception {
Calendar cal = Calendar.getInstance();
Locale loc = new Locale("");
SimpleDateFormat dateformat = new SimpleDateFormat("dd/MM/yyyy");
EndDateTxt = new JCalendarComboBox(cal, loc, dateformat);
StartDateTxt = new JCalendarComboBox(cal, loc, dateformat);
HeaderLabe.setBackground(new Color(250, 233, 216));
HeaderLabe.setBounds(new Rectangle(0, 0, 830, 33));
this.setLayout(null);
this.setBackground(SystemColor.control);
headlab.setBackground(new Color(250, 233, 216));
headlab.setFont(new java.awt.Font("Verdana", 1, 12));
headlab.setForeground(Color.blue);
headlab.setHorizontalAlignment(SwingConstants.CENTER);
headlab.setText(" :: Auto Population Rollback");
headlab.setBounds(new Rectangle(39, 2, 247, 25));
EndDateTxt.setBounds(new Rectangle(474, 36, 116, 18));
EndDateTxt.setBackground(Color.white);
EndDateTxt.setFont(new java.awt.Font("Times New Roman", 1, 10));
EndDateTxt.setForeground(Color.blue);
EndDateTxt.setBorder(null);
HawbLab.setFont(new java.awt.Font("Dialog", 0, 13));
HawbLab.setForeground(Color.blue);
HawbLab.setHorizontalAlignment(SwingConstants.RIGHT);
HawbLab.setText("Job No/Airway Bill No:");
HawbLab.setBounds(new Rectangle(326, 14, 146, 18));
HawbTxt.setBounds(new Rectangle(474, 14, 125, 18));
HawbTxt.setText("");
HawbTxt.setFont(new java.awt.Font("Times New Roman", 1, 10));
HawbTxt.setForeground(Color.blue);
HawbTxt.setBorder(border1);
AgentLab.setFont(new java.awt.Font("Dialog", 0, 13));
AgentLab.setForeground(Color.blue);
AgentLab.setHorizontalAlignment(SwingConstants.RIGHT);
AgentLab.setText("<html>Agent:<font size=\'4\' color=\"#993333\">*</font></html>");
AgentLab.setBounds(new Rectangle(31, 14, 97, 18));
StartDateLab.setFont(new java.awt.Font("Dialog", 0, 13));
StartDateLab.setForeground(Color.blue);
StartDateLab.setHorizontalAlignment(SwingConstants.RIGHT);
StartDateLab.setText("Start Date:");
StartDateLab.setBounds(new Rectangle(23, 36, 105, 18));
StartDateTxt.setBounds(new Rectangle(129, 36, 116, 18));
StartDateTxt.setBackground(Color.white);
StartDateTxt.setFont(new java.awt.Font("Times New Roman", 1, 10));
StartDateTxt.setForeground(Color.blue);
StartDateTxt.setBorder(null);
AgentLBox.setBackground(Color.white);
AgentLBox.setFont(new java.awt.Font("Verdana", 0, 13));
AgentLBox.setForeground(Color.blue);
AgentLBox.setBounds(new Rectangle(129, 14, 178, 18));
AgentLBox.setFont(new java.awt.Font("Times New Roman", 1, 10));
EnddateLab.setFont(new java.awt.Font("Dialog", 0, 13));
EnddateLab.setForeground(Color.blue);
EnddateLab.setHorizontalAlignment(SwingConstants.RIGHT);
EnddateLab.setText("End Date:");
EnddateLab.setBounds(new Rectangle(391, 36, 81, 18));
ReviewJobsPane.setBackground(new Color(240, 233, 216));
ReviewJobsPane.setBorder(BorderFactory.createLineBorder(Color.black));
ReviewJobsPane.setBounds(new Rectangle(69, 47, 705, 96));
ReviewJobsPane.setLayout(null);
SearchBtn.setUI(ui);
SearchBtn.setCursor(cursor);
SearchBtn.setBackground(new Color(76, 125, 104));
SearchBtn.setBounds(new Rectangle(377, 153, 89, 19));
SearchBtn.setFont(new java.awt.Font("Tahoma", 1, 10));
SearchBtn.setForeground(Color.white);
SearchBtn.setBorder(border2);
SearchBtn.setOpaque(true);
SearchBtn.setFocusPainted(false);
SearchBtn.setText("Search");
SearchBtn.addActionListener(new AutoPopRollBack_SearchBtn_actionAdapter(this));
for (int i = 0; i < AgentList.size(); i++)
AgentLBox.addItem( (String) AgentList.get(i));
DocTypeLBox.setFont(new java.awt.Font("Verdana", 0, 13));
DocTypeLBox.setForeground(Color.blue);
DocTypeLBox.setMinimumSize(new Dimension(22, 19));
DocTypeLBox.setBounds(new Rectangle(129, 58, 179, 18));
DocTypeLBox.setFont(new java.awt.Font("Times New Roman", 1, 10));
DocTypeLBox.addItem("New Jobs");
DocTypeLBox.addItem("Draft jobs");
DocTypeLBox.addItem("Finished jobs");
doctypelab.setBounds(new Rectangle(7, 58, 121, 18));
doctypelab.setText("<html>Document Type:<font size=\'4\' color=\"#993333\">*</font></html>");
doctypelab.setHorizontalAlignment(SwingConstants.RIGHT);
doctypelab.setForeground(Color.blue);
doctypelab.setFont(new java.awt.Font("Dialog", 0, 13));
displayPanel.setBorder(BorderFactory.createLineBorder(Color.black));
displayPanel.setBounds(new Rectangle(69, 182, 705, 315));
this.add(headlab, null);
this.add(HeaderLabe, null);
this.add(ReviewJobsPane, null);
ReviewJobsPane.add(HawbLab, null);
ReviewJobsPane.add(AgentLab, null);
ReviewJobsPane.add(AgentLBox, null);
ReviewJobsPane.add(StartDateLab, null);
ReviewJobsPane.add(StartDateTxt, null);
ReviewJobsPane.add(HawbTxt, null);
ReviewJobsPane.add(EnddateLab, null);
ReviewJobsPane.add(EndDateTxt, null);
ReviewJobsPane.add(DocTypeLBox, null);
ReviewJobsPane.add(doctypelab, null);
this.add(SearchBtn, null);
this.add(displayPanel, null);
//this.add(scrollPaneView, null);
// scrollPaneView.getViewport().add(displayPanel, null);
this.setVisible(true);
void FieldEditable(boolean str) {
StartDateTxt.setEnabled(str);
EndDateTxt.setEnabled(str);
public static void main(String args[]) {
JFrame frame = new JFrame();
ArrayList agentlist = new ArrayList();
agentlist.add(0, "BF0651");
agentlist.add(1, "PF0010");
AutoPopRollBack objAutoPopRollBack = new AutoPopRollBack(frame, agentlist);
frame.getContentPane().add(objAutoPopRollBack);
frame.setBounds(new Rectangle(0, 0, 820, 593));
frame.setVisible(true);
void SearchBtn_actionPerformed(ActionEvent e) {
displayPanel.setVisible(false);
Vector data=new Vector();
rows.removeAllElements();
boolean flag = true;
String che = new EndStartDateCheck().crossCheck(StartDateTxt.getCalendar(), EndDateTxt.getCalendar());
try {
if(HawbTxt.getText().equalsIgnoreCase("")){
if (StartDateTxt._spinner.getText().equalsIgnoreCase("")) {
JOptionPane.showMessageDialog(this, "Please Select Start Date",
"Warning", JOptionPane.WARNING_MESSAGE);
flag = false;
else if (!che.equalsIgnoreCase("")) {
JOptionPane.showMessageDialog(frame, che, "Message Window", JOptionPane.INFORMATION_MESSAGE);
flag = false;
}else{
FieldEditable(true);
if (flag) {
try {
displayPanel.removeAll();
} catch (Exception ex) {
rows.removeAllElements();
data.removeAllElements();
SearchBtn.setEnabled(true);
searchlist.add(0, AgentLBox.getSelectedItem().toString().trim());
if (!HawbTxt.getText().trim().equalsIgnoreCase(""))
searchlist.add(1, HawbTxt.getText().toString().trim());
else
searchlist.add(1, "");
searchlist.add(2, new Integer(DocTypeLBox.getSelectedIndex() + 1));
String startDate = new ConvertDate().convertddMM_To_MMdd(StartDateTxt._spinner.getText());
String endDate = new ConvertDate().convertddMM_To_MMdd(EndDateTxt._spinner.getText());
Vector columns = new Vector();
columns.add(0, "");
columns.add(1, "JOB No");
columns.add(2, "Status");
columns.add(3, "Current Form Type");
columns.add(4, "New Form Type");
System.out.println("Before calling Data Base");
jobList = objConnectmagr.AutoRollBackSearch(searchlist, startDate, endDate, "AutoPopRollBack");
if (jobList.size() > 0) {
for (int i = 0; i < jobList.size(); i++) {
ArrayList temp = new ArrayList();
temp = (ArrayList) jobList.get(i);
Vector col = new Vector();
col.add(0, new Boolean(false));
col.add(1, temp.get(0).toString().trim());
col.add(2, temp.get(1).toString().trim());
col.add(3, temp.get(2).toString().trim());
Vector tempstr=new Vector();
String [] tem=temp.get(3).toString().trim().split("\\|");
tempstr.removeAllElements();
for(int k=0;k<tem.length;k++)
tempstr.add(k,tem[k]);
col.add(4, new JComboBox(tempstr));
data.add(col);
dm.setDataVector(data, columns);
table = new JTable(dm) {
public void tableChanged(TableModelEvent e) {
super.tableChanged(e);
public boolean isCellEditable(int rowIndex, int vColIndex) {
return true;
JScrollPane scroll = new JScrollPane(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
table.setColumnSelectionAllowed(false);
table.setRowSelectionAllowed(false);
table.setCellSelectionEnabled(false);
table.setBackground(SystemColor.inactiveCaptionText);
table.setRowHeight(20);
JTableHeader head = table.getTableHeader();
head.setSize(850, 75);
table.setTableHeader(head);
table.getTableHeader().setFont(new Font("Verdana", Font.BOLD, 11));
table.getTableHeader().setBackground(new Color(130, 170, 150));
table.getTableHeader().setForeground(Color.BLUE);
table.getTableHeader().setReorderingAllowed(false);
table.getTableHeader().setResizingAllowed(false);
table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
table.setFont(new java.awt.Font("MS Sans Serif", 0, 13));
table.setForeground(new Color(125, 25, 0));
TableColumn col = table.getColumnModel().getColumn(0);
col.setMinWidth(75);
col.setMaxWidth(75);
TableColumn col1 = table.getColumnModel().getColumn(1);
col1.setMinWidth(150);
col1.setMaxWidth(150);
TableColumn col2 = table.getColumnModel().getColumn(2);
col2.setMinWidth(150);
col2.setMaxWidth(150);
TableColumn col3 = table.getColumnModel().getColumn(3);
col3.setMinWidth(150);
col3.setMaxWidth(150);
TableColumn col4 = table.getColumnModel().getColumn(4);
col4.setMinWidth(160);
col4.setMaxWidth(160);
TableColumn tc = table.getColumnModel().getColumn(0);
tc.setCellEditor(table.getDefaultEditor(Boolean.class));
tc.setCellRenderer(table.getDefaultRenderer(Boolean.class));
tc.setHeaderRenderer(new CheckBoxHeader(new MyItemListener()));
Vector tempstr=new Vector();
for(int j=0;j<jobList.size();j++){
ArrayList temlist=(ArrayList)jobList.get(j);
String [] tem=temlist.get(3).toString().trim().split("\\|");
tempstr.removeAllElements();
for(int k=0;k<tem.length;k++)
tempstr.add(k,tem[k]);
JComboBox portTypesCombo = new JComboBox(tempstr);
col4.setCellEditor(new DefaultCellEditor(portTypesCombo));
col4 = table.getColumnModel().getColumn(4);
col4.setCellEditor(new MyComboBoxEditor(tempstr));
// If the cell should appear like a combobox in its
// non-editing state, also set the combobox renderer
col4.setCellRenderer(new MyComboBoxRenderer(tempstr));
System.out.println(tempstr);
displayPanel.setLayout(new BorderLayout());
displayPanel.add(table.getTableHeader(), BorderLayout.PAGE_START);
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
table.setEditingColumn(0);
int column = 0;
if (e.getClickCount() == 1) {
Point p = e.getPoint();
selectedRow = table.rowAtPoint(p);
column = table.columnAtPoint(p);
System.out.println(table.isCellEditable(selectedRow, column));
if (column != 0) {
selectedRow = -1;
returnList = new Vector();
returnList = (Vector) rows.get(selectedRow);
else if (column == 0) {
table.revalidate();
table.repaint();
scroll.getViewport().add(table);
displayPanel.add(scroll, BorderLayout.CENTER);
displayPanel.setVisible(true);
else {
JOptionPane.showMessageDialog(this, "No Data Available");
} catch (Exception e1) {
e1.printStackTrace();
class MyItemListener implements ItemListener {
public void itemStateChanged(ItemEvent e) {
Object source = e.getSource();
if (source instanceof AbstractButton == false)return;
boolean checked = e.getStateChange() == ItemEvent.SELECTED;
for (int x = 0, y = table.getRowCount(); x < y; x++) {
table.setValueAt(new Boolean(checked), x, 0);
class AutoPopRollBack_SearchBtn_actionAdapter implements java.awt.event.ActionListener {
AutoPopRollBack adaptee;
AutoPopRollBack_SearchBtn_actionAdapter(AutoPopRollBack adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.SearchBtn_actionPerformed(e);
class RadioButtonRenderer implements TableCellRenderer {
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
if (value == null)return null;
return (Component) value;
class RadioButtonEditor extends DefaultCellEditor implements ItemListener {
private JRadioButton button;
public RadioButtonEditor(JCheckBox checkBox) {
super(checkBox);
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected, int row,
int column) {
if (value == null)return null;
button = (JRadioButton) value;
button.addItemListener(this);
return (Component) value;
public Object getCellEditorValue() {
button.removeItemListener(this);
return button;
public void itemStateChanged(ItemEvent e) {
super.fireEditingStopped();
class CheckCellRenderer extends JCheckBox implements TableCellRenderer {
protected static Border m_noFocusBorder;
public CheckCellRenderer() {
super();
m_noFocusBorder = new EmptyBorder(1, 2, 1, 2);
setOpaque(true);
setBorder(m_noFocusBorder);
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
if (value instanceof Boolean) {
Boolean b = (Boolean) value;
setSelected(b.booleanValue());
setBackground(isSelected && !hasFocus ?
table.getSelectionBackground() : table.getBackground());
setForeground(isSelected && !hasFocus ?
table.getSelectionForeground() : table.getForeground());
setFont(table.getFont());
setBorder(hasFocus ? UIManager.getBorder(
"Table.focusCellHighlightBorder") : m_noFocusBorder);
return this;
class CheckBoxHeader extends JCheckBox implements TableCellRenderer, MouseListener {
protected CheckBoxHeader rendererComponent;
protected int column;
protected boolean mousePressed = false;
public CheckBoxHeader(ItemListener itemListener) {
rendererComponent = this;
rendererComponent.addItemListener(itemListener);
public Component getTableCellRendererComponent(
JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
if (table != null) {
JTableHeader header = table.getTableHeader();
if (header != null) {
rendererComponent.setForeground(header.getForeground());
rendererComponent.setBackground(header.getBackground());
rendererComponent.setFont(new java.awt.Font("Verdana", 1, 10));
header.addMouseListener(rendererComponent);
setColumn(column);
rendererComponent.setText("Select All");
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return rendererComponent;
protected void setColumn(int column) {
this.column = column;
public int getColumn() {
return column;
protected void handleClickEvent(MouseEvent e) {
if (mousePressed) {
mousePressed = false;
JTableHeader header = (JTableHeader) (e.getSource());
JTable tableView = header.getTable();
TableColumnModel columnModel = tableView.getColumnModel();
int viewColumn = columnModel.getColumnIndexAtX(e.getX());
int column = tableView.convertColumnIndexToModel(viewColumn);
if (viewColumn == this.column && e.getClickCount() == 1 && column != -1) {
doClick();
public void mouseClicked(MouseEvent e) {
handleClickEvent(e);
( (JTableHeader) e.getSource()).repaint();
public void mousePressed(MouseEvent e) {
mousePressed = true;
public void mouseReleased(MouseEvent e) {
public void mouseEntered(MouseEvent e) {
public void mouseExited(MouseEvent e) {
class MyComboBoxRenderer extends JComboBox implements TableCellRenderer {
public MyComboBoxRenderer(Vector items) {
super(items);
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
if (isSelected) {
setForeground(table.getSelectionForeground());
super.setBackground(table.getSelectionBackground());
else {
setForeground(table.getForeground());
setBackground(table.getBackground());
// Select the current value
setSelectedItem(value);
return this;
class MyComboBoxEditor extends DefaultCellEditor {
public MyComboBoxEditor(Vector items) {
super(new JComboBox(items));
and Bringing data from data base by using this method
if (i == 0) sqlString = "SELECT * FROM FLIGHTSEARCH WHERE AGENT_CODE='" + agentCode + "' and ISSUEDATE BETWEEN '" + startDate + "' and '" + endDate + "'";
else sqlString = "SELECT * FROM FLIGHTSEARCH WHERE AGENT_CODE='" + agentCode + "' and JOB_NO='" + JobNo + "%'";
st = con.createStatement();
System.out.println("---new jobs search-->" + sqlString);
rs = st.executeQuery(sqlString);
while (rs.next()) {
retVector = new ArrayList();
retVector.add(0, rs.getString("JOBNO"));
retVector.add(1, "New Job");
retVector.add(2, rs.getString("DOC_TYPE"));
String temp="";
if(retVector.get(2).toString().trim().equalsIgnoreCase("K1")){
temp="K8I|K8T";
}else if(retVector.get(2).toString().trim().equalsIgnoreCase("K2")){
temp="K8E";
}else if(retVector.get(2).toString().trim().equalsIgnoreCase("K8I")){
// temp="K1|K8T";
}else if(retVector.get(2).toString().trim().equalsIgnoreCase("K8T")){
temp="K1|K8I";
}else if(retVector.get(2).toString().trim().equalsIgnoreCase("K8E")){
temp="K2";
retVector.add(3,temp);
retVector.add(3, rs.getString("AGENT_CODE"));
retVectorlist.add(retVector);
i am sending data To ComboBox like this
if(retVector.get(2).toString().trim().equalsIgnoreCase("K1")){
K8I and K8T
if K2 adding k8E and for other types as mentioned above
But for ComboBoxes it is showing same Items not changing
Please any body can help to me
Thanks and Regards
Ravichandra

If you want further help post a Short, Self Contained, Compilable and Executable, Example Program ([url http://homepage1.nifty.com/algafield/sscce.html]SSCCE) that demonstrates the problem.
And don't forget to use [url http://forum.java.sun.com/help.jspa?sec=formatting]code formatting when posting code.

Filtering the rows of a JTable based on JCombobox selection

Hi,,,
I write an application where I have a combobox contains the JTable first column data when i click on the item it should give me the rows, which contains the selected item as their first column data. I am enable to get the list like that, please, help me in this.........................................
Thanks In Advance,
Sun_sgrk

Hi Albert,
I write the code like this.............., please, check it, if I am following any where wrong let me know.......
     JComboBox filterCb=(JComboBox)evt.getSource();
        if(filterCb==filterComboBox){
            for(int i=0;i<wtOb.length;i++){
                for(int j=0;j<4;j++){
                    if(wtOb[0].toString()==filterComboBox.getSelectedItem())
System.out.println(""+wtOb[i][j]);
This code I written in netbeans, when I am printing the values of wtOb[i][j] in console its getting the rows, suppose I am selecting the topic as GeneralTopic then its givining me the output as-----
GeneralTopic
Dealer5
Player3
BlackJack2
GeneralTopic
Dealer7
Player6
BlackJack
but I am getting the trouble when i want to show these rows only in my table, please, give me any suggestion or any help to resolve it. I tried with table.setModel also but its not working.
Regards,
sun_sgrk

JComboBox makes for nice security vulnerability under X11?

I noticed a couple years ago that when I set a breakpoint inside a JComboBox state change event handler on a Java application or applet running under X11, the entire desktop would hang. Back then, I checked the Swing bug database and found an issue regarding this, but it was closed with an evaluation that pretty much simply said that the developer didn't know how to fix it.
When I brought this up in the netbeans mailing list, someone suggested that this could be a security issue if someone intentionally/programmatically stopped all processing from within this event handler (perhaps from an applet). Perhaps, as a security vulnerability this bug would get more attention!
Well, it's been over a year and the latest JDK 1.6b10 (build 25) still has this problem. So, obviously it's not bothering anyone, except me, enough to do anything about it. I could try to file this bug under Swing again (probably with same outcome) or try filing it as a security bug. What are people's thoughts?

Hi
Try going here:
http://europe.nokia.com/A4423034
Or alternatively : find the product pages for the 5700 by going to www.nokia.com/phones, then pick out 5700, then dip into "PC software" and "Music"
Cheers

JComboBox - Bottom border is not visible for the first time

JComboBox - Bottom border is not visible for the first time i click on the arrow to drop the list down.
This happens because the list when dropped down goes out of the frame.
If have the increased the size of the Frame then i am able to see it,but i dont want to do this.
I am using jdk1.3.1_02.
Any Help would be great.
Please find the code below.
Thanks,
Sridhar.
//file: Lister.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Lister {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Lister v1.0");
        // create a combo box
        String [] items = { "uno", "due", "tre", "quattro", "cinque",
        "sei", "sette", "otto", "nove", "deici",
        "undici", "dodici" };
        JComboBox comboBox = new JComboBox(items);
        comboBox.setEditable(true);
        // put the controls the content pane
        Container c = frame.getContentPane( );
        JPanel comboPanel = new JPanel( );
        comboPanel.add(comboBox);
        c.add(comboPanel, BorderLayout.NORTH);
        c.setBackground(Color.white);
        comboBox.setBackground(Color.white);
        comboPanel.setBackground(Color.white);
        frame.setBackground(Color.white);
        frame.setResizable(false);
        frame.setSize(200, 200);
        frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
        frame.setVisible(true);
}

Hello,
try this:JPanel comboPanel = new JPanel(new BorderLayout());Regards,
Tim

Drop down list(JComboBox) - Bottom border is not visible for the first time

Drop down list(Combo-box) JComboBox - Bottom border is not visible for the first time i click on the arrow to drop the list down.
I am using jdk1.3.1_02.
Did any one face this issue.
Please let me know.
Thanks,
Sridhar.

I must be a little confused regarding your question.
You can simply change your code frame.setSize(200, 200); to frame.setSize(400, 400);When you say you are unable to see the border are you specifically talking about the border of the frame or the border of the combo box?
Lance

JComboBox as editor in JTable

Hi,
I have used JComboBox as editor for cell in one of the columns in JTable.
And to that JComboBox I have set the Editor by extending the BasicComboBoxEditor class in which I used JFormattedTextField as an editor. ie I have set the JFormattedTextField as an editor for JComboBox and then JComboBox as an editor for table column cell. Got it!
Now here;s the problem, when the cell is editable and combobox is having focus by using down arrow button it shows the drop down list and i can scroll it by pressing down arrow button. Now if i hit enter button it is not selecting the value and does nothing. Is there any techinical reason for this.
I want that when I press Enter or tab after scrolling using down arrow button it should select currenlty highlited item. Rest of the work is done.
Thanks and regards
Nilesh

Hello there
I had a similar problem and I spent ages trying to figure it out. I take it the cell you are trying to edit is already empty. What it is, while you have a cell editor on the cell in question, you dont have a cell renderer which is responsible for actually drawing the selected item in the cell once the editing combobox has closed. The way I found around this problem was to fill the cells of the table with some default data when the table is initalised, this meant that a suitable renderer for the type of data I was trying to display was automatically assigned.
Hope this helps

Problem with setting tooltips for items of a JCombobox

hi guys,
I want to set tooltips for items of JComboBox & the code that i have written is given below , but the tooltip text is set for all the items of Nonitindustrycombo but the tooltips remain the same even for Nonitdesgcombo's items.
Is that we need to refresh the ComboboxRenderer every time ?
I am not able to trace out the exact reason for this,please if anyone can suggest me something regarding this would be of great use to me.
class Searchpanel extends JPanel {
String[] str = null;
public SearchPanel(){
Nonitindustrycombo.addItem("--Select--");
ArrayList NonITindus = ERPModel.getAllNonitIndustry(); //gets all the items(strings) for Nonitindustrycombo
for (Iterator iter = NonITindus.iterator(); iter.hasNext();) {
String str = iter.next().toString();
Nonitindustrycombo.addItem(str);
SetTooltip(Nonitindustrycombo,NonITindus);
Nonitdesgcombo.addItem("--Select---");
ArrayList desg = ERPModel.getAllNonitDesg(); //gets all the items(strings) for Nonitdesgcombo
for (Iterator iter = desg.iterator(); iter.hasNext();) {
Nonitdesgcombo.addItem(iter.next());
SetTooltip(Nonitdesgcombo,desg);
class MyComboBoxRenderer extends BasicComboBoxRenderer
public Component getListCellRendererComponent(JList list, Object value,
int index, boolean isSelected,
boolean cellHasFocus)
if (isSelected)
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
if (0 < (index))
list.setToolTipText(str[index - 1]);
else
setBackground(list.getBackground());
setForeground(list.getForeground());
setFont(list.getFont());
setText((value == null) ? "" : value.toString());
return this;
private void SetTooltip(JComboBox combo,ArrayList arr){
str = (String []) arr.toArray (new String [arr.size ()]);
combo.setRenderer(new MyComboBoxRenderer());
public static void main(String[] args){
new SearchPanel();
Thanks ,
vishal

1) You where given a working example in your last posting on this topic. Compare your code with the working code to see whats different and fix it.
2) The code you posted doesn't compile.
3) You didn't use the "Code Formatting Tags" when you posted your code so it not readable.

How to create a JComboBox with Dates???

Hi... I need to create a JComboBox with Date elements...
For example: from "Jan-01-2007" to "Mar-02-2007"
Jan-01-2007
Jan-02-2007
Jan-03-2007
Mar-01-2007
Mar-02-2007
Anyone know how to do it???
Regards...

//here is an example how to get the date
//I think this might help you!!!
import java.text.DateFormat;
import java.util.Date;
public class DateFormatExample1 {
    public static void main(String[] args) {
        // Make a new Date object. It will be initialized to the current time.
        Date now = new Date();
        // See what toString() returns
        System.out.println(" 1. " + now.toString());
        // Next, try the default DateFormat
        System.out.println(" 2. " + DateFormat.getInstance().format(now));
        // And the default time and date-time DateFormats
        System.out.println(" 3. " + DateFormat.getTimeInstance().format(now));
        System.out.println(" 4. " +
            DateFormat.getDateTimeInstance().format(now));
        // Next, try the short, medium and long variants of the
        // default time format
        System.out.println(" 5. " +
            DateFormat.getTimeInstance(DateFormat.SHORT).format(now));
        System.out.println(" 6. " +
            DateFormat.getTimeInstance(DateFormat.MEDIUM).format(now));
        System.out.println(" 7. " +
            DateFormat.getTimeInstance(DateFormat.LONG).format(now));
        // For the default date-time format, the length of both the
        // date and time elements can be specified. Here are some examples:
        System.out.println(" 8. " + DateFormat.getDateTimeInstance(
            DateFormat.SHORT, DateFormat.SHORT).format(now));
        System.out.println(" 9. " + DateFormat.getDateTimeInstance(
            DateFormat.MEDIUM, DateFormat.SHORT).format(now));
        System.out.println("10. " + DateFormat.getDateTimeInstance(
            DateFormat.LONG, DateFormat.LONG).format(now));
}

Problem using an editable JComboBox as JTable cell editor

Hi,
i have a problem using an editable JComboBox as cell editor in a JTable.
When i edit the combo and then I press the TAB or ENTER key then all works fine and the value in the TableModel is updated with the edited one, but if i leave the cell with the mouse then the value is not passed to the TableModel. Why ? Is there a way to solve this problem ?
Regards
sergio sette

if (v1.4) [url
http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/JTa
le.html#setSurrendersFocusOnKeystroke(boolean)]go
hereelse [url
http://forum.java.sun.com/thread.jsp?forum=57&thread=43
440]go here
Thank you. I've also found this one (the first reply): http://forum.java.sun.com/thread.jsp?forum=57&thread=124361 Works fine for me.
Regards
sergio sette

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