JTree Repaint Problem .
I'm creating a dynamic JTree by querying th DB. The JTree has to reflect the changes if any.
But the problem is that although I'm getting all the correct nodes in the JTree, the tree display is not repainted if the window is maximized or focussed and the tree area is displayed grey. Other components like buttons etc are correctly visible.
If I click in the greyed area of the JTree then that particular node is visible and the rest nodes are hidden.
same problem comes when I have a JPopup for the nodes.. It leaves a greyed rectangle in place of the JPopup.
Any suggestions will be a great help.
- Praveen
I tried the reload , revalidate and the repaint method of the Treemodel, but nothing changed... its all the same.I'd like to explain in full what am I doing.
I have some items in the DB which are shown in the JTree. When any Item is added to the DB I poll the DB
after an interval to check new entries or deleted entries, and this is to be updated to the JTree.
The additions and deletions are going on properly a/c to the DB the only problem being that , that if the window(JFrame) containing the JTree (JTree is contained in JScrollPane) is minimized or hidden, then only the JTree is greyed and not the other components such as the buttons.
Interestingly if I double click in the JTree area then the Jtree becomes visible properly. This happens after each update of the JTree.
Hope this description will give a better view.
Thanks for all your previous helpful hints.
Similar Messages
-
Performance with repaint problem
Hi,
I have a performance and repaint problem.
My problem is than I have a layer pane with about 500 JScrollPane, each JScrollPane has a JLabel, and each JLabel has an Icon. I can have to maintain this hierarchy.
I have a thread that makes the icon change from a color state to a grey state; in fact it makes them all blink.
My problem is that is takes 50% of the CPU when the blink thread is running. As well, they do not all blink at the same time. The thread changes the icon color and calls a repaint. They seem to repaint independently.
What I would like is to collapse the paint calls into one without having to call repaint on the whole JFrame which does solve my problem but it is a hack.
Swing should collapse all the repaints into one call to the parent but I think because of the JScrollPanes it is not. Can anyone shed any light into why it does not paint all in one call instead of 500 repaint calls.
Thanks,
PatWell, I'd change the design first, but if you must play around with paint() then you can try using this setIgnoreRepaint(true) in the Component class.
You could do the grouping yourself and then when you really want things repainted, flag all your components again with setIgnoreRepaint(false), and then call revlaidate() to the parent, and it should repaint everything at once. That is what's I'd try, anyway. -
Repaint problem while clicking the popup menuitem
Hi all,
iam facing repainting problem in my application. User can initiate a single action from different options such as JButton, double-click of mouse and clicking the menu item form the JPopupMenu.
All these will execute the same code. But when iam using the first two ways, the repainting is properly working and aim getting the required UI and opening the JInternalFrame.
When the last case is being used(ie., clicking the menu item form the JPopupMenu), then the repaint is not working and the window being opened is coming in pieces and then finally i could see the window after some time, which is not the case with the first two cases.
Please help me how to solve and get the window at once. Iam attaching the code.
MainFrame.java
package com.swing;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
public class MainFrame extends JFrame implements ActionListener{
static final long serialVersionUID = 3345648L;
public MainFrame() {
setSize(1000,750);
setLayout(null);
setVisible(true);
addMenuBar();
invalidate();
public void actionPerformed(ActionEvent actionEvent) {
Object source = actionEvent.getSource();
if( source == s_mnuItmFirstFrame ) {
FirstFrame s_frameFirst = new FirstFrame(this);
this.add(s_frameFirst);
* @param args
public static void main(String[] args) {
MainFrame mFrame = new MainFrame();
JMenuBar s_menuBar = null;
JMenuItem s_mnuItmFirstFrame = new JMenuItem("Add Internal Frame");
void addMenuBar(){
Font fontNormal = new Font("Dialog", Font.PLAIN, 11);
s_menuBar = new JMenuBar();
s_menuBar.setDoubleBuffered(true);
getRootPane().setJMenuBar(s_menuBar);
s_mnuItmFirstFrame.setFont(fontNormal);
s_mnuItmFirstFrame.addActionListener(this);
JMenu s_menuFrames = new JMenu("Frames");
s_menuFrames.setFont(fontNormal);
s_menuFrames.add(s_mnuItmFirstFrame);
s_menuBar.add(s_menuFrames);
FirstFrame.java
package com.swing;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.MouseWheelEvent;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JTable;
import javax.swing.event.InternalFrameAdapter;
import javax.swing.event.InternalFrameEvent;
import javax.swing.table.DefaultTableModel;
public class FirstFrame extends JInternalFrame implements ActionListener
static final long serialVersionUID = 2345657L;
public FirstFrame(JFrame parentFrame) {
super(" First Frame ", true, true, true, true);
mainFrame = parentFrame;
setSize(400, 400);
setVisible(true);
setLayout(new FlowLayout());
try {
setMaximum(false);
} catch (Exception e) {
e.printStackTrace();
DefaultTableModel s_modelFirstTable = new DefaultTableModel();
Vector tableData = new Vector();
Vector namesVector = new Vector();
namesVector.add("OneFirst");
namesVector.add("OneMiddle");
namesVector.add("OneLast");
tableData.add(namesVector);
namesVector = new Vector();
namesVector.add("TwoFirst");
namesVector.add("TwoMiddle");
namesVector.add("TwoLast");
tableData.add(namesVector);
namesVector = new Vector();
namesVector.add("ThreeFirst");
namesVector.add("ThreeMiddle");
namesVector.add("ThreeLast");
tableData.add(namesVector);
namesVector = new Vector();
namesVector.add("FourFirst");
namesVector.add("FourMiddle");
namesVector.add("FourLast");
tableData.add(namesVector);
namesVector = new Vector();
namesVector.add("FiveFirst");
namesVector.add("FiveMiddle");
namesVector.add("FiveLast");
tableData.add(namesVector);
Vector tableHeader = new Vector();
tableHeader.add("First Name");
tableHeader.add("Middle Name");
tableHeader.add("Last Name");
s_modelFirstTable.setDataVector(tableData, tableHeader);
s_tblFirst.setModel(s_modelFirstTable);
add(s_tblFirst);
add(s_btnSecondButton);
s_mnuPopupMenu.add(s_mnuItmSecondButton);
s_mnuPopupMenu.add(s_mnuItmSecondButton1);
s_mnuPopupMenu.add(s_mnuItmSecondButton2);
s_mnuPopupMenu.add(s_mnuItmSecondButton3);
s_mnuPopupMenu.add(s_mnuItmSecondButton4);
s_tblFirst.addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent mouseEvent) {
s_mnuPopupMenu.setVisible(true);
// if (mouseEvent.isPopupTrigger()) {
s_mnuPopupMenu.show(mouseEvent.getComponent(), mouseEvent
.getX(), mouseEvent.getY());
s_btnSecondButton.addActionListener(this);
s_mnuItmSecondButton.addActionListener(this);
this.addInternalFrameListener(new InternalFrameAdapter() {
public void internalFrameClosing(InternalFrameEvent ifEvent) {
Object object = ifEvent.getSource();
if (object == FirstFrame.this) {
try {
if (s_frameSecond != null)
s_frameSecond.setClosed(true);
} catch (Exception e) {
e.printStackTrace();
public void actionPerformed(ActionEvent actionEvent) {
if (s_frameSecond != null) {
try {
s_frameSecond.setClosed(true);
} catch (Exception e) {
e.printStackTrace();
s_frameSecond = new SecondFrame();
mainFrame.add(s_frameSecond);
s_frameSecond.moveToFront();
s_frameSecond.setVisible(true);
JFrame mainFrame ;
JTable s_tblFirst = new JTable();
JButton s_btnSecondButton = new JButton("Second Frame");
JMenuItem s_mnuItmSecondButton = new JMenuItem("Second Frame");
JMenuItem s_mnuItmSecondButton1 = new JMenuItem("Second Frame1");
JMenuItem s_mnuItmSecondButton2 = new JMenuItem("Second Frame2");
JMenuItem s_mnuItmSecondButton3 = new JMenuItem("Second Frame3");
JMenuItem s_mnuItmSecondButton4 = new JMenuItem("Second Frame4");
JPopupMenu s_mnuPopupMenu = new JPopupMenu();
SecondFrame s_frameSecond;
SecondFrame.java
package com.swing;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JInternalFrame;
public class SecondFrame extends JInternalFrame {
static final long serialVersionUID = 1345648L;
public SecondFrame() {
super(" Second Frame ", true, true, true, true);
try {
setLayout(new GridLayout(4, 4));
setSize(400,400);
//setVisible(true);
setMaximizable(true);
for(int i=0; i<4; i++){
for(int j=0; j<4; j++){
add(new JButton(""+(i+1)+", "+(j+1)));
catch(Exception e){
e.printStackTrace();
}Don't post an IDE generated code as is. It's a torture for human eye. At least, you should rename
all the identifiers to some meaningful names.
You MUST use JDesktopPane when you use JInternalFrames.
Here's a working code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
import java.util.*;
public class MainFrame extends JFrame implements ActionListener{
static final long serialVersionUID = 3345648;
JFrame frame;
JDesktopPane jdp;
public MainFrame() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(1000,750);
// setLayout(null); //you MUST use a real LayoutManager
addMenuBar();
frame = this;
jdp = new JDesktopPane();
frame.add(jdp);
setVisible(true);
public void actionPerformed(ActionEvent actionEvent) {
Object source = actionEvent.getSource();
if( source == s_mnuItmFirstFrame ) {
FirstFrame s_frameFirst = new FirstFrame(this);
jdp.add(s_frameFirst);
s_frameFirst.setVisible(true);
public static void main(String[] args) {
MainFrame mFrame = new MainFrame();
JMenuBar s_menuBar = null;
JMenuItem s_mnuItmFirstFrame = new JMenuItem("Add Internal Frame");
void addMenuBar(){
Font fontNormal = new Font("Dialog", Font.PLAIN, 11);
s_menuBar = new JMenuBar();
s_menuBar.setDoubleBuffered(true);
getRootPane().setJMenuBar(s_menuBar);
s_mnuItmFirstFrame.setFont(fontNormal);
s_mnuItmFirstFrame.addActionListener(this);
JMenu s_menuFrames = new JMenu("Frames");
s_menuFrames.setFont(fontNormal);
s_menuFrames.add(s_mnuItmFirstFrame);
s_menuBar.add(s_menuFrames);
setJMenuBar(s_menuBar);
class FirstFrame extends JInternalFrame implements ActionListener{
static final long serialVersionUID = 2345657;
public FirstFrame(MainFrame parentFrame) {
super(" First Frame ", true, true, true, true);
mainFrame = parentFrame;
setSize(400, 400);
setVisible(true);
setLayout(new FlowLayout());
try {
setMaximum(false);
} catch (Exception e) {
e.printStackTrace();
DefaultTableModel s_modelFirstTable = new DefaultTableModel();
Vector<Vector> tableData = new Vector<Vector>();
Vector<String> namesVector = new Vector<String>();
namesVector.add("OneFirst");
namesVector.add("OneMiddle");
namesVector.add("OneLast");
tableData.add(namesVector);
namesVector = new Vector<String>();
namesVector.add("TwoFirst");
namesVector.add("TwoMiddle");
namesVector.add("TwoLast");
tableData.add(namesVector);
namesVector = new Vector<String>();
namesVector.add("ThreeFirst");
namesVector.add("ThreeMiddle");
namesVector.add("ThreeLast");
tableData.add(namesVector);
namesVector = new Vector<String>();
namesVector.add("FourFirst");
namesVector.add("FourMiddle");
namesVector.add("FourLast");
tableData.add(namesVector);
namesVector = new Vector<String>();
namesVector.add("FiveFirst");
namesVector.add("FiveMiddle");
namesVector.add("FiveLast");
tableData.add(namesVector);
Vector<String> tableHeader = new Vector<String>();
tableHeader.add("First Name");
tableHeader.add("Middle Name");
tableHeader.add("Last Name");
s_modelFirstTable.setDataVector(tableData, tableHeader);
s_tblFirst.setModel(s_modelFirstTable);
add(s_tblFirst);
add(s_btnSecondButton);
s_mnuPopupMenu.add(s_mnuItmSecondButton);
s_mnuPopupMenu.add(s_mnuItmSecondButton1);
s_mnuPopupMenu.add(s_mnuItmSecondButton2);
s_mnuPopupMenu.add(s_mnuItmSecondButton3);
s_mnuPopupMenu.add(s_mnuItmSecondButton4);
s_tblFirst.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent mouseEvent){
if (mouseEvent.isPopupTrigger()) {
s_mnuPopupMenu.show(mouseEvent.getComponent(),
mouseEvent.getX(), mouseEvent.getY());
public void mouseReleased(MouseEvent mouseEvent) {
if (mouseEvent.isPopupTrigger()) {
s_mnuPopupMenu.show(mouseEvent.getComponent(),
mouseEvent.getX(), mouseEvent.getY());
s_btnSecondButton.addActionListener(this);
s_mnuItmSecondButton.addActionListener(this);
addInternalFrameListener(new InternalFrameAdapter() {
public void internalFrameClosing(InternalFrameEvent ifEvent) {
Object object = ifEvent.getSource();
if (object == this) {
try {
if (s_frameSecond != null){
s_frameSecond.setClosed(true);
} catch (Exception e) {
e.printStackTrace();
} // FirstFrame constructor
public void actionPerformed(ActionEvent actionEvent) {
if (s_frameSecond != null) {
try {
s_frameSecond.setClosed(true);
} catch (Exception e) {
e.printStackTrace();
s_frameSecond = new SecondFrame();
mainFrame.jdp.add(s_frameSecond);
s_frameSecond.moveToFront();
s_frameSecond.setVisible(true);
MainFrame mainFrame ;
JTable s_tblFirst = new JTable();
JButton s_btnSecondButton = new JButton("Second Frame");
JMenuItem s_mnuItmSecondButton = new JMenuItem("Second Frame");
JMenuItem s_mnuItmSecondButton1 = new JMenuItem("Second Frame1");
JMenuItem s_mnuItmSecondButton2 = new JMenuItem("Second Frame2");
JMenuItem s_mnuItmSecondButton3 = new JMenuItem("Second Frame3");
JMenuItem s_mnuItmSecondButton4 = new JMenuItem("Second Frame4");
JPopupMenu s_mnuPopupMenu = new JPopupMenu();
SecondFrame s_frameSecond;
class SecondFrame extends JInternalFrame {
static final long serialVersionUID = 1345648;
public SecondFrame() {
super(" Second Frame ", true, true, true, true);
try {
setLayout(new GridLayout(4, 4));
setSize(400, 400);
setMaximizable(true);
for(int i=0; i<4; i++){
for(int j = 0; j < 4; ++j){
add(new JButton("" + (i + 1) + ", " + (j + 1)));
catch(Exception e){
e.printStackTrace();
} -
Hello all,
Iam facing a repaint problem when i start my pgm. the display is distorted but when i minimize & maximize the window display is proper after that everything works fine. my pgm contains JApplet which in turn contains toobar, menubar scrollpane & a panel. the panel contaisn one more panel on which i'm drawing some data. when the pgm starts up the drawing is no in it's proper position i tried calling repaint, revalidate, paintAll .. all these commands in various places in various combination. i couldn't still solvemy problem. can anybody help me with this. the problem comes only when the window opens at first.
Thanks in advanceI also want to add one more thing if i run this as an application this problem doesn't comes. but i want to run this as an applet. is there anything special with the applet's paint method. please help me.
-
OHJ4.1.16 Repainting Problems and 100%CPU on java 1.4
Hi
We are considering using OHJ4.1.16 as our application help, I have it working such that when the help is invoked either from the toolbar or the menu OHJ is displayed, but there are major repainting problems when the OHJ window is closed by clicking on the X button and then the help is invoked again from the toolbar or the menu item.
Please note that the first time it displays and paints fine only when the OHJ frame is closed and invoked again the problem occurs
The problems encountered are repainting(really whacky), 100% CPU utilization
Please have a look at the code below and tell me if i am not doing it right, Also is there anyway i can trap events on the OHJ frame so that i can dispose it everytime the window is closed by the user??
The following code is executed when the help is invoked
public void startHelp()
helpObject.showNavigatorWindow();
helpObject.setVisible(true);
public static void launchApplication()
String helpset1 = "/resources/help/Test.hs";
Vector booksVector = new Vector();
booksVector.add(helpset1);
if(m_instance == null)
m_instance = new ApplicationHelp(booksVector);
else
m_instance.startHelp();
we are using java 1.4, the above problem makes OHJ unusable!!Hi, John. We're trying to reproduce your problem. If you run any of the OHJ 4.1.16 demos in the bin directory of the installation, do you run into the 100% CPU utilization problem? If so, how? The cshDemo.bat file creates a dummy application that has an OHJ deployment, so please test that one in particular.
Thanks,
Ryan -
JTextpane positioning repaint problems
Hello all,
I have encountered a bug with JTextpane which I haven't found a solution for. I am new to Java and am revising previously written code, but I think this is a Java-related issue and not particular to my source code.
I am writing html into a JTextPane-based class, yet on occasion, not keen to any particular scenarios, my text loses its position and drops one line. This is fixed by closing the window, hiding it or doing other things which I assume forces a repaint.
This is very hard to debug. Is there a way to force all events to be called whenever I display the html textpane (like a VB6 DoEvents)? Has anyone encountered these repaint problems with JTextPane?
Thanks in advance
EyalThanks for the reply
Could you please xplain what you mean by "subbing"?
Anyhow I tried adding your suggestion but I am still encountering similar problems, and I can't debug because the symptoms don't appear in a consistent fashion.
If anyone has any suggestions I'd love to know.
Best regards
Eyal -
Hello --
I've searched this subject ad nauseum on these forums and the rest of the web, and I'm still coming up blank.
Basically, I have a file structure JTree. To do a "refresh" view, I basically kill the original object, and rebuild it again -- while first storing the last TreePath the user was on.
Since this tree is built dynamically, placeholders are used to tell if the parent node has any children. From there, it looks up its children.
During the refresh, I fire the tree.expandPath(path), and in my expansion listener, it should take care of the rest.
Well, it seems like all the steps are going correctly, due to the debug output I'm getting, but I can't get the tree to scroll to the path. Here's the reload part:
public void refreshTree(TreePath path){
TP tp = null;
Object [] obj = path.getPath();
for (int i = 2; i <= obj.length; i++){
tp = new TP(obj, i);
tree.expandPath(tp.getTP());
//I've tried these in the for loop to no avail
// tree.setSelectionPath(tp.getTP());
// tree.scrollPathToVisible(tp.getTP());
//this should be the last and final TreePath object
tree.expandPath(tp.getTP());
//tree.getSelectionModel().setSelectionPath(tp.getTP());
tree.setSelectionPath(tp.getTP());
tree.scrollPathToVisible(tp.getTP());
//this class exists so I can build the treepath one
//leaf at a time
class TP extends TreePath{
public TP(Object[] obj, int length){
super(obj, length);
public TreePath getTP(){
return this;
}I've tried rebuild and all, and it seems like everything is doing what it's supposed to except drawing it right. Here's the code for the expansion:
class selectionListener implements TreeExpansionListener{
public void treeExpanded(TreeExpansionEvent evt){
DefaultMutableTreeNode node = getTreeNode(evt.getPath());
TreeNode firstBorn = node.getFirstChild();
if (firstBorn.toString().equals(PLACEHOLDER)){
System.out.println("made it"); //debug
populateTree(evt.getPath()); //this gets the new stuff
public void treeCollapsed(TreeExpansionEvent evt){}
}So, again, it seems like everything is firing the way it should, it's just not redrawing the tree to the current path.
I'm on Java 1.4[02], Windows 2K, and JTree is set to SINGLE selection mode. If you need any additional information, please let me know.
Thank you very much for your time.
-SteveIt seems that the tree is firing a node change itself, because I have code executing in the
public void treeExpanded(TreeExpansionEvent evt)
function.
I also put a bit of debug code in... I have
System.out.println("Is collapsed? " + tree.isCollapsed(tp.getTP()));
Inside my for loop... the output is false everytime.
So it seems that everything exists, it's just not repainting the gui for some reason or other. I'm not spinning off seperate threads to do anything, so I'd assume it's not a thread problem.
Any ideas? This is really getting frustrating, for something I thought would be so simple. -
Hi!
In my application I have a JTree component, wich has nodes and childs. When the application starts up I populate the JTree with some data retrieved from a database. But after that I need to change some data in the database wich is reloaded and this changes the text inside the nodes in the JTree. Then I call the repaint() method of the JTree update. The problem is when the updated string is bigger then the old string, part of the string is not visible i.e it shows "..." after the text.
Is there someone who knows this problem?
Thanks in advance.Hi dayanandabv ! Thanks for your reply ! I tried your suggestion, but it won't work! i tried validate() afler and before the repaint method.
Any other ideas?
I'm trying hard to fix this but with no results :( some help will be appreciated.
Thanks again. -
I have a JTree and things are moved between the branches automatically (its an MSN type program)
To show the change I need to get the JTree to refresh itself. Though when I call revalidate() or repaint() or both together it does nothing.
It works if I call updateUI() however when I call this it sorts the branches out but keeps throwing a null pointer exception and it does not say where the exception comes from and nothing I can do finds it.
Has anyone had this type of problem with updateUI() and if so is there a way to fix it.
Ne help greatly appreciated.
MJSDK 1.42 I think
public JGroups(String emailName) {
this.setLayout(new BorderLayout());
this.emailName = emailName;
emailStatusName = emailName + " (Online)";
controlCenter = ControlConnection.getInstance();
users = new JPanel();
users.setLayout(new BoxLayout(users, BoxLayout.Y_AXIS));
change = new StatusChanging();
this.add(users, BorderLayout.CENTER);
this.setBackground(YELLOW);
this.createPanel();
this.createTree();
this.makePopUp();
protected static ImageIcon createImageIcon(String path) {
java.net.URL imgURL = JGroups.class.getResource(path);
if (imgURL != null) {
return new ImageIcon(imgURL);
} else {
System.err.println("Couldn't find file: " + path);
return null;
private void createPanel() {
top = new DefaultMutableTreeNode(emailStatusName);
tree = new JTree(top);
tree.getSelectionModel().setSelectionMode(
TreeSelectionModel.SINGLE_TREE_SELECTION);
tree.setBackground(YELLOW);
tree.addMouseListener(change);
tree.setOpaque(true);
//Enable tool tips.
ToolTipManager manager = ToolTipManager.sharedInstance();
manager.registerComponent(tree);
manager.setInitialDelay(0);
//Set the icon for leaf nodes.
onlineIcon = createImageIcon("images/status/online.png");
busyIcon = createImageIcon("images/status/busy.png");
awayIcon = createImageIcon("images/status/away.png");
onPhoneIcon = createImageIcon("images/status/onPhone.png");
atLunchIcon = createImageIcon("images/status/atLunch.png");
offlineIcon = createImageIcon("images/status/offline.png");
brbIcon = createImageIcon("images/status/brb.png");
tree.setCellRenderer(new MyRenderer());
scroll = new JScrollPane(tree);
this.add(scroll, BorderLayout.CENTER);
private void createTree() {
//Status extends DefaultMutableTreeNode
onlineStatus = new Status("Online", onlineIcon, "Online");
top.add(onlineStatus);
busyStatus = new Status("Busy", busyIcon, "Busy");
top.add(busyStatus);
awayStatus = new Status("Away", awayIcon, "Away");
top.add(awayStatus);
* MsnBuddy extends DefaultMutableTreeNode
//this method is used to add items to the tree
public void addFriend(MsnBuddy buddy, int status) {
if (ONLINE == status) {
onlineStatus.add(buddy);
if (AWAY == status) {
awayStatus.add(buddy);
if (BUSY == status) {
busy.add(buddy);
//call when a change on the tree is made
public void validateRepaint() {
tree.invalidate();
tree.validate();
tree.repaint();
//called before re-adding the users into the tree
//inefficient waiting for backend to notify only changes
//to user status's
public void removingAll() {
onlineStatus.removeAllChildren();
awayStatus.removeAllChildren();
busyStatus.removeAllChildren();
private class MyRenderer extends DefaultTreeCellRenderer {
Status theStatus;
MsnBuddy buddy;
public MyRenderer() {
public Component getTreeCellRendererComponent(
JTree tree,
Object value,
boolean sel,
boolean expanded,
boolean leaf,
int row,
boolean hasFocus) {
super.getTreeCellRendererComponent(
tree,
value,
sel,
expanded,
leaf,
row,
hasFocus);
setBackground(YELLOW);
if (isBuddy(value)) {
buddy = (MsnBuddy) value;
setIcon(null);
setToolTipText(buddy.getEmailName());
} else if (isStatus(value)) {
theStatus = (Status) value;
setIcon(theStatus.getIcon());
} else {
setToolTipText(null); //no tool tip
return this;
protected boolean isBuddy(Object value) {
if (value instanceof MsnBuddy) {
return true;
return false;
protected boolean isStatus(Object value) {
if (value instanceof Status) {
return true;
} else {
return false;
}MJ -
MDI JTable Overlap Area Repaint Problem
Hi all,
I have a problem for my application in MDI mode.
I open many windows (JInternalFrame contain JTable) under JDesktopPane. Some of the windows are overlapping and when they receive update in the table, it seems repaint all of the overlapping windows, not only itself. This make my application performance become poor, slow respond for drap & drop an existing window or open a new window.
To prove this, i make a simple example for open many simple table and have a thread to update the table's value for every 200 mill second. After i open about 20 windows, the performance become poor again.
If anyone face the same problem with me and any suggestions to solve the problem ?
Please help !!!!!
Following are my sources:
public class TestMDI extends JFrame {
private static final long serialVersionUID = 1L;
private JPanel contentPanel;
private JDesktopPane desktopPane;
private JMenuBar menuBar;
private List<TestPanel> allScreens = new ArrayList<TestPanel>();
private List<JDialog> freeFloatDialogs = new ArrayList<JDialog>();
private List<JInternalFrame> mdiInternalFrm = new ArrayList<JInternalFrame>();
int x = 0;
int y = 0;
int index = 0;
private static int MDI_MODE = 0;
private static int FREE_FLOAT_MODE = 1;
private int windowMode = MDI_MODE;
public TestMDI() {
init();
public static void main(String[] args) {
new TestMDI().show();
public void init() {
contentPanel = new JPanel();
desktopPane = new JDesktopPane();
desktopPane.setDragMode(JDesktopPane.LIVE_DRAG_MODE);
desktopPane.setFocusTraversalKeysEnabled(false);
desktopPane.setFocusTraversalPolicyProvider(false);
desktopPane.setBorder(null);
desktopPane.setIgnoreRepaint(true);
desktopPane.setPreferredSize(new Dimension(1000, 800));
this.setSize(new Dimension(1000, 800));
menuBar = new JMenuBar();
JMenu menu1 = new JMenu("Test");
JMenuItem menuItem1 = new JMenuItem("Open Lable Screen");
menuItem1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
for (int i = 1; i < 4; i++) {
final TestJLableScreen screen = new TestJLableScreen("Screen " + (allScreens.size() + 1));
screen.startTime();
if (windowMode == MDI_MODE) {
JInternalFrame frame = createInternalFram(screen);
desktopPane.add(frame);
mdiInternalFrm.add(frame);
if (allScreens.size() * 60 + 100 < 1000) {
x = allScreens.size() * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
frame.setLocation(x, y);
frame.setVisible(true);
} else {
JDialog dialog = createJDialog(screen);
freeFloatDialogs.add(dialog);
if (i * 60 + 100 < 1000) {
x = i * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
dialog.setLocation(x, y);
dialog.setVisible(true);
allScreens.add(screen);
JMenuItem menuItem2 = new JMenuItem("Open Table Screen");
menuItem2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
for (int i = 1; i < 4; i++) {
TestTableScreen screen = new TestTableScreen("Screen " + (allScreens.size() + 1));
screen.startTime();
if (windowMode == MDI_MODE) {
JInternalFrame frame = createInternalFram(screen);
desktopPane.add(frame);
mdiInternalFrm.add(frame);
if (allScreens.size() * 60 + 100 < 1000) {
x = allScreens.size() * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
frame.setLocation(x, y);
frame.setVisible(true);
} else {
JDialog dialog = createJDialog(screen);
freeFloatDialogs.add(dialog);
if (i * 60 + 100 < 1000) {
x = i * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
dialog.setLocation(x, y);
dialog.setVisible(true);
allScreens.add(screen);
menu1.add(menuItem1);
menu1.add(menuItem2);
this.setJMenuBar(menuBar);
this.getJMenuBar().add(menu1);
this.getJMenuBar().add(createSwitchMenu());
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.add(desktopPane);
desktopPane.setDesktopManager(null);
public JInternalFrame createInternalFram(final TestPanel panel) {
final CustomeInternalFrame internalFrame = new CustomeInternalFrame(panel.getTitle(), true, true, true, true) {
public void doDefaultCloseAction() {
super.doDefaultCloseAction();
allScreens.remove(panel);
internalFrame.setPanel(panel);
// internalFrame.setOpaque(false);
internalFrame.setSize(new Dimension(1010, 445));
internalFrame.add(panel);
internalFrame.setFocusTraversalKeysEnabled(false);
internalFrame.setFocusTraversalPolicyProvider(false);
desktopPane.getDesktopManager();
// internalFrame.setFocusTraversalKeysEnabled(false);
internalFrame.setIgnoreRepaint(true);
return internalFrame;
public JDialog createJDialog(final TestPanel panel) {
JDialog dialog = new JDialog(this, panel.getTitle());
dialog.setSize(new Dimension(1010, 445));
dialog.add(panel);
dialog.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
allScreens.remove(panel);
return dialog;
public JMenu createSwitchMenu() {
JMenu menu = new JMenu("Test2");
JMenuItem menuItem1 = new JMenuItem("Switch FreeFloat");
menuItem1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
windowMode = FREE_FLOAT_MODE;
for (JInternalFrame frm : mdiInternalFrm) {
frm.setVisible(false);
frm.dispose();
frm = null;
mdiInternalFrm.clear();
remove(desktopPane);
desktopPane.removeAll();
// revalidate();
repaint();
add(contentPanel);
index = 0;
for (JDialog dialog : freeFloatDialogs) {
dialog.setVisible(false);
dialog.dispose();
dialog = null;
freeFloatDialogs.clear();
for (int i = 0; i < allScreens.size(); i++) {
JDialog dialog = createJDialog(allScreens.get(i));
freeFloatDialogs.add(dialog);
if (i * 60 + 100 < 1000) {
x = i * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
dialog.setLocation(x, y);
dialog.setVisible(true);
JMenuItem menuItem2 = new JMenuItem("Switch MDI");
menuItem2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
windowMode = MDI_MODE;
remove(contentPanel);
add(desktopPane);
for (int i = 0; i < freeFloatDialogs.size(); i++) {
freeFloatDialogs.get(i).setVisible(false);
freeFloatDialogs.get(i).dispose();
freeFloatDialogs.clear();
// revalidate();
repaint();
for (JInternalFrame frm : mdiInternalFrm) {
frm.setVisible(false);
frm.dispose();
frm = null;
mdiInternalFrm.clear();
index = 0;
for (int i = 0; i < allScreens.size(); i++) {
JInternalFrame frame = createInternalFram(allScreens.get(i));
desktopPane.add(frame);
mdiInternalFrm.add(frame);
if (i * 60 + 100 < 1000) {
x = i * 60;
y = 60;
} else {
x = 60 * index;
y = 120;
index++;
frame.setLocation(x, y);
frame.setVisible(true);
menu.add(menuItem1);
menu.add(menuItem2);
return menu;
public class TestTableScreen extends TestPanel {
private static final long serialVersionUID = 1L;
JTable testTable = new JTable();
MyTableModel tableModel1 = new MyTableModel(1);
private boolean notRepaint = false;
int start = 0;
JScrollPane scrollPane = new JScrollPane();
private Timer timmer = new Timer(200, new ActionListener() {
public void actionPerformed(ActionEvent e) {
Random indexRandom = new Random();
final int index = indexRandom.nextInt(50);
Random valRandom = new Random();
final int val = valRandom.nextInt(600);
SwingUtilities.invokeLater(new Runnable() {
public void run() {
notRepaint = false;
TestTableScreen.this.update(index + "|" + val);
public TestTableScreen(String title) {
this.title = title;
init();
tableModel1.setTabelName(title);
public void startTime() {
timmer.start();
public String getTitle() {
return title;
public void update(String updateStr) {
String[] val = updateStr.split("\\|");
if (val.length == 2) {
int index = Integer.valueOf(val[0]);
List vals = tableModel1.getVector();
if (vals.size() > index) {
vals.set(index, val[1]);
// tableModel1.fireTableRowsUpdated(index, index);
} else {
vals.add(val[1]);
// tableModel1.fireTableRowsUpdated(vals.size() - 1, vals.size() - 1);
tableModel1.fireTableDataChanged();
public TableModel getTableModel() {
return tableModel1;
public void init() {
testTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
testTable.setRowSelectionAllowed(true);
this.testTable.setModel(tableModel1);
int[] width = { 160, 80, 45, 98, 60, 88, 87, 88, 80, 70, 88, 80, 75, 87, 87, 41, 88, 82, 75, 68, 69 };
TableColumnModel columnModel = testTable.getColumnModel();
for (int i = 0; i < width.length; i++) {
columnModel.getColumn(i).setPreferredWidth(width[i]);
testTable.setRowHeight(20);
tableModel1.fireTableDataChanged();
this.setLayout(new BorderLayout());
TableColumnModel columnMode2 = testTable.getColumnModel();
int[] width2 = { 200 };
for (int i = 0; i < width2.length; i++) {
columnMode2.getColumn(i).setPreferredWidth(width2[i]);
scrollPane.getViewport().add(testTable);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
this.add(scrollPane, BorderLayout.CENTER);
class MyTableModel extends DefaultTableModel {
public List list = new ArrayList();
String titles[] = new String[] { "袨怓1", "袨怓2", "袨怓3", "袨怓4", "袨怓5", "袨怓6", "袨怓7", "袨怓8", "袨怓9", "袨怓10", "袨怓11",
"袨怓12", "袨怓13", "袨怓14", "袨怓15", "袨怓16", "袨怓17", "袨怓18", "袨怓19", "袨怓20", "袨怓21" };
String tabelName = "";
int type_head = 0;
int type_data = 1;
int type = 1;
public MyTableModel(int type) {
super();
this.type = type;
for (int i = 0; i < 50; i++) {
list.add(i);
public void setTabelName(String name) {
this.tabelName = name;
public int getRowCount() {
if (list != null) {
return list.size();
return 0;
public List getVector() {
return list;
public int getColumnCount() {
if (type == 0) {
return 1;
} else {
return titles.length;
public String getColumnName(int c) {
if (type == 0) {
return "head";
} else {
return titles[c];
public boolean isCellEditable(int nRow, int nCol) {
return false;
public Object getValueAt(int r, int c) {
if (list.size() == 0) {
return null;
switch (c) {
default:
if (type == 0) {
return r + " " + c + " test ";
} else {
return list.get(r) + " " + c;
public boolean isNotRepaint() {
return notRepaint;
public void setNotRepaint(boolean notRepaint) {
this.notRepaint = notRepaint;
public class TestPanel extends JPanel {
protected String title = "";
protected boolean needRepaint = false;
protected boolean isFirstOpen = true;
public String getTitle() {
return title;
public void setNeedRepaint(boolean flag) {
this.needRepaint = flag;
public boolean isNeedRepaint() {
return needRepaint;
public boolean isFirstOpen() {
return isFirstOpen;
public void setFirstOpen(boolean isFirstOpen) {
this.isFirstOpen = isFirstOpen;
public class TestJLableScreen extends TestPanel {
private static final long serialVersionUID = 1L;
private JLabel[] allLables = new JLabel[20];
private Timer timmer = new Timer(20, new ActionListener() {
public void actionPerformed(ActionEvent e) {
Random indexRandom = new Random();
final int index = indexRandom.nextInt(10);
Random valRandom = new Random();
final int val = valRandom.nextInt(600);
SwingUtilities.invokeLater(new Runnable() {
public void run() {
TestJLableScreen.this.setNeedRepaint(true);
TestJLableScreen.this.update(index + "|" + val);
public TestJLableScreen(String title) {
this.title = title;
init();
public void startTime() {
timmer.start();
public String getTitle() {
return title;
public void update(String updateStr) {
String[] val = updateStr.split("\\|");
if (val.length == 2) {
int index = Integer.valueOf(val[0]);
allLables[index * 2 + 1].setText(val[1]);
public void init() {
this.setLayout(new GridLayout(10, 2));
boolean flag = true;
for (int i = 0; i < allLables.length; i++) {
allLables[i] = new JLabel() {
// public void setText(String text) {
// super.setText(text);
// // System.out.println(" setText " + getTitle() + " ; " + this.getName());
public void paint(Graphics g) {
super.paint(g);
// System.out.println(" paint " + getTitle() + " ; " + this.getName());
// public void repaint() {
// super.repaint();
// System.out.println(" repaint " + getTitle() + " ; " + this.getName());
allLables[i].setName("" + i);
if (i % 2 == 0) {
allLables[i].setText("Name " + i + " : ");
} else {
allLables[i].setOpaque(true);
if (flag) {
allLables[i].setBackground(Color.YELLOW);
flag = false;
} else {
allLables[i].setBackground(Color.CYAN);
flag = true;
allLables[i].setText(i * 8 + "");
for (int i = 0; i < allLables.length; i++) {
this.add(allLables[i]);
public class CustomeInternalFrame extends JInternalFrame {
protected TestPanel panel;
public CustomeInternalFrame() {
this("", false, false, false, false);
public CustomeInternalFrame(String title) {
this(title, false, false, false, false);
public CustomeInternalFrame(String title, boolean resizable) {
this(title, resizable, false, false, false);
public CustomeInternalFrame(String title, boolean resizable, boolean closable) {
this(title, resizable, closable, false, false);
public CustomeInternalFrame(String title, boolean resizable, boolean closable, boolean maximizable) {
this(title, resizable, closable, maximizable, false);
public CustomeInternalFrame(String title, boolean resizable, boolean closable, boolean maximizable,
boolean iconifiable) {
super(title, resizable, closable, maximizable, iconifiable);
public TestPanel getPanel() {
return panel;
public void setPanel(TestPanel panel) {
this.panel = panel;i had the same problem with buttons and it seemed that i overlayed my button with something else...
so check that out first do you put something on that excact place???
other problem i had was the VAJ one --> VisualAge for Java (terrible program)
it does strange tricks even when you don't use the drawing tool...
dunno 2 thoughts i had... check it out...
SeJo -
Please help me ..
i have write a code ..which is when the user clicks the button...
a jtree table will come and the values inside the jtree will be filled by the contents of the selected items in the form...
but my problem is jtree only is comming
i created the object class ... but ...
the initialisation is not happening...
plz check the code below .. this is my class
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
public class Reservation extends JFrame implements ItemListener,ActionListener{
JComboBox fromCity = null;
JComboBox toCity = null;
JComboBox dDay = null;
JComboBox dMonth = null;
JComboBox dYear = null;
JComboBox rDay = null;
JComboBox rMonth = null;
JComboBox rYear = null;
JComboBox adult = null;
JComboBox Cabin = null;
JFrame table;
public Reservation()
setSize(600,400);
JPanel p = new JPanel();
//getContentPane().setLayout(new BorderLayout());
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
p.setLayout(gbl);
String []cities = {"New York","Chicago","Miami","Pittsburgh","Memphis","New Orleans"};
String [] days={"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","27","28","29","30","31"};
String [] months = {"January","Feburary","March","April","May","June","July","August","September","October","November","December"};
String [] year = {"2006","2007"};
String [] adt = {"1","2","3","4"};
String [] cab = {"Buisness","Economy"};
fromCity = new JComboBox(cities);
fromCity.setSelectedIndex(0);
toCity = new JComboBox(cities);
toCity.setSelectedIndex(0);
dDay = new JComboBox(days);
dMonth = new JComboBox(months);
dYear = new JComboBox(year);
rDay = new JComboBox(days);
rMonth = new JComboBox(months);
rYear = new JComboBox(year);
adult = new JComboBox(adt);
Cabin = new JComboBox(cab);
JLabel frmCity = new JLabel("From");
frmCity.setLabelFor(fromCity);
JLabel tCity = new JLabel("To");
tCity.setLabelFor(tCity);
JLabel dDate = new JLabel("Departure Date");
dDate.setLabelFor(dDate);
JLabel rDate = new JLabel("Return Date");
rDate.setLabelFor(rDate);
JLabel Psg = new JLabel("Pasengers");
Psg.setLabelFor(Psg);
JLabel Adults = new JLabel("Adults");
Adults.setLabelFor(Adults);
JLabel cabin = new JLabel("Cabin");
cabin.setLabelFor(cabin);
JLabel search = new JLabel("Search By");
search.setLabelFor(search);
JRadioButton ROneWay = new JRadioButton("One Way");
JRadioButton RRoundTrip = new JRadioButton("Round Trip");
JButton searchbutton = new JButton("Date");
ButtonGroup group = new ButtonGroup();
group.add(ROneWay);
group.add(RRoundTrip);
gbc.gridx = 0;
gbc.gridy = 0;
gbc.insets = new Insets(0,30,0,0);
p.add(frmCity,gbc);
gbc.gridx =1;
gbc.gridy = 0;
gbc.insets = new Insets(0,30,0,0);
p.add(fromCity,gbc);
gbc.gridx =0;
gbc.gridy = 1;
gbc.insets = new Insets(0,30,0,0);
p.add(tCity,gbc);
gbc.gridx =1;
gbc.gridy = 1;
gbc.insets = new Insets(10,30,0,0);
p.add(toCity,gbc);
gbc.gridx = 0;
gbc.gridy = 2;
gbc.insets = new Insets(10,50,0,0);
p.add(ROneWay,gbc);
gbc.gridx = 1;
gbc.gridy = 2;
gbc.insets = new Insets(10,30,0,0);
p.add(RRoundTrip,gbc);
gbc.gridx = 1;
gbc.gridy = 3;
gbc.insets = new Insets(0,0,0,0);
p.add(dDate,gbc);
gbc.gridx = 0;
gbc.gridy = 4;
p.add(dDay,gbc);
gbc.gridx = 1;
gbc.gridy = 4;
p.add(dMonth,gbc);
gbc.gridx = 2;
gbc.gridy = 4;
p.add(dYear,gbc);
gbc.gridx = 1;
gbc.gridy = 5;
gbc.insets = new Insets(0,0,0,0);
p.add(rDate,gbc);
gbc.gridx = 0;
gbc.gridy = 6;
p.add(rDay,gbc);
gbc.gridx = 1;
gbc.gridy = 6;
p.add(rMonth,gbc);
gbc.gridx = 2;
gbc.gridy = 6;
p.add(rYear,gbc);
gbc.gridx = 1;
gbc.gridy = 7;
p.add(Psg,gbc);
gbc.gridx = 0;
gbc.gridy = 8;
p.add(Adults,gbc);
gbc.gridx = 1;
gbc.gridy = 8;
p.add(adult,gbc);
gbc.gridx = 0;
gbc.gridy = 9;
p.add(cabin,gbc);
gbc.gridx = 1;
gbc.gridy = 9;
gbc.insets = new Insets(10,0,0,0);
p.add(Cabin,gbc);
gbc.gridx = 0;
gbc.gridy = 10;
p.add(search,gbc);
gbc.gridx = 1;
gbc.gridy = 10;
gbc.insets = new Insets(10,0,0,0);
p.add(searchbutton,gbc);
getContentPane().add(p);
fromCity.addItemListener(this);
toCity.addItemListener(this);
dDay.addItemListener( this);
dMonth.addItemListener( this);
dYear.addItemListener(this);
adult.addItemListener(this);
Cabin.addItemListener(this);
searchbutton.addActionListener(this);
//Jtable form
table = new JFrame();
Container container;
container = table.getContentPane();
JPanel jpanel = new JPanel(new GridLayout(2,1));
container.setLayout(new GridLayout(2,1));
JLabel l1 = new JLabel("Departure Journey");
l1.setLabelFor(l1);
container.add(l1);
final String[] colHeads = {"","Flightno","Date","Departure Time","Arrival Time","Flight","Duration","Fare"};
final Object[ ][ ] data = new Object[10][10];
JTable table = new JTable(data,colHeads);
int v=ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED;
int h = ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED;
JScrollPane jsp = new JScrollPane(table,v,h);
container.add(jsp,BorderLayout.CENTER);
String ffcity,ttcity,dday,dmon,dyear,adt,cab;
public void itemStateChanged(ItemEvent e)
ffcity = (String)fromCity.getSelectedItem();
ttcity = (String)toCity.getSelectedItem();
dday = (String)dDay.getSelectedItem();
dmon = (String)dMonth.getSelectedItem();
dyear = (String)dYear.getSelectedItem();
adt = (String)adult.getSelectedItem();
cab = (String)Cabin.getSelectedItem();
public void actionPerformed(ActionEvent ae)
if(ae.getActionCommand() == "Date")
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:ds","sa", "");
PreparedStatement stmt = con.prepareStatement("select ifno,vdtime,vatime,vdate1,vdate2,vdate3,efare from airways where fcity = ? and tcity = ? and vdate1 = ? and vdate2 = ? and vdate3 = ?");
stmt.setString(1,ffcity);
stmt.setString(2,ttcity);
stmt.setString(3,dday);
stmt.setString(4,dmon);
stmt.setString(5,dyear);
ResultSet d = stmt.executeQuery();
/* int count=0;
while(d.next())
{count++;
int i = 0;*/
while(d.next())
/*for(int j =1;j<=7;j++)
data[i][j] = rs.getString(j);
System.out.println(" " + data[i][j]);
}i++;*/
System.out.println(d.getInt(1));
System.out.println(d.getDouble(2));
catch(Exception ex)
System.out.println("Error occurred");
System.out.println("Error:"+ex);
table.setVisible(true);
table.setSize(300,200);
private static void createAndShowGUI()
JFrame.setDefaultLookAndFeelDecorated(true);
Reservation r=new Reservation();
JFrame frame = new JFrame("Reservation Form");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//r.pack();
r.setVisible(true);
public static void main(String[] args)
SwingUtilities.invokeLater(new Runnable(){
public void run()
createAndShowGUI();
in this object creation is not happening
when i run this code ...
only jtree is comming..
how can i make it the values of seceted items to come in table
i commented the parts that having error..
when u uncomment it u will get the problem of this codeplease anyone
-
InternalFrame repaint problem, pls help
I am develop my final year project which is a drawing tool using the Model-View-Controller with Observer and internalFrame. When more than one document is create in the program, the content of activated internalFrame can display properly, but the problem is that other internalFrame also repaint the content become to the activated internalFrame content.
How can i make other inernalFrame repaint the content properly??
public class Sketcher
public static void main(String[] args)
theApp = new Sketcher();
theApp.init();
public void init()
window = new SketchFrame("Sketcher", this); // Create the app window
window.setBounds(0,0,500,500);
window.addWindowListener(new WindowHandler() // Add window listener
// Handler for window closing event
public void windowClosing(WindowEvent e)
{ window.checkForSave(); };
desktop = new JDesktopPane(); //a specialized layered pane
createFrame();
window.getContentPane().add(desktop, BorderLayout.CENTER);
window.setVisible(true);
// Return a reference to the application window
public SketchFrame getWindow()
return window;
// Return a reference to the model
public SketchModel getModel()
return sketch;
// Return a reference to the view
public SketchView getView()
return view;
// Handler class for window events
class WindowHandler extends WindowAdapter
// Handler for window closing event
public void windowClosing(WindowEvent e)
// Code to be added here later...
public void insertModel(SketchModel newSketch)
MyInternalFrame frame2 = new MyInternalFrame();
frame2.setVisible(true); //necessary as of kestrel
sketch2 = new SketchModel(); // Create the model
view2 = new SketchView(this); // Create the view
sketch.addObserver((Observer)view2); // Add the view as observer
sketch.addObserver((Observer)window); // Add the app window as observer
JComponent c = (JComponent) frame2.getContentPane();
c.add(view, BorderLayout.CENTER);
desktop.add(frame2);
try {
frame2.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
protected void createFrame() {
MyInternalFrame frame = new MyInternalFrame();
frame.setVisible(true); //necessary as of kestrel
sketch = new SketchModel(); // Create the model
view = new SketchView(this); // Create the view
JComponent c = (JComponent) frame.getContentPane();
sketch.addObserver((Observer)view); // Register the view with the model
sketch.addObserver((Observer)window); // Register window as observer
c.add(view, BorderLayout.CENTER);
desktop.add(frame);
try {
frame.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
JDesktopPane desktop;
private JTextArea JtextArea;
private SketchModel sketch, sketch2; // The data model for the sketch
private SketchView view, view2; // The view of the sketch
private static SketchFrame window; // The application window
private static Sketcher theApp; // The application objectYou should call frame2.setVisible(true) after the addition of view in the contentPane of the frame :
public void insertModel(SketchModel newSketch) {
MyInternalFrame frame2 = new MyInternalFrame();
sketch2 = new SketchModel(); // Create the model
view2 = new SketchView(this); // Create the view
sketch.addObserver((Observer)view2); // Add the view as observer
sketch.addObserver((Observer)window); // Add the app window as observer
JComponent c = (JComponent) frame2.getContentPane();
c.add(view, BorderLayout.CENTER);
desktop.add(frame2);
try {
frame2.setSelected(true);
catch (java.beans.PropertyVetoException e) {}
frame2.setVisible(true); //necessary as of kestrel
}I hope this helps,
Denis -
Repainting problems of the Menu items in Oracle Help Navigator
All,
I am facing a strange problem when using Oracle Help for my application which is developed in Java,Swings.
Whenever, I open Help for any component through my application, the menu items in the Help screen are not visible. They are not getting repainted. Only when user drags the mouse over the items, they are getting repainted and visible to the user. This has been raised as a bug by our testing people. I couldn't get any help in aspects of any errors/exceptions being logged when the action takes place.
Where can I have the log files for Help window?
Can anyone help me and guide me to the right solution in this regards.
My environ is like this:
Windows NT, JRE1.4, Oracle Help - ohj-jewt-4_1_16.jar,
Thanks in advance for all.
regards,
Kishore.iweb2 navbar is rendered by javascript widget, therefore you can change navbar font style with javascript; this is an efficient way to change navbar font style.
Copy and paste the following into your pages using HTML Snippet:
<script type = 'text/javascript'>
function changeNavbar() {
navCSS = parent.document.getElementById('widget0-navbar');
navCSS.style.fontSize = '0.75em'; // font size, change to less than 1em to change font smaller;
navCSSbg = parent.document.getElementById('widget0-bg');
navCSSbg.style.textAlign = 'center'; // navbar list alignment;
clearInterval(chkNavbar);
chkNavbar = setInterval('changeNavbar()', 500);
note: You won't see the changes in iweb, but you will see the change when view the pages online - after publishing. -
JCheckBox as nodes in JTree having problems with custom renderer and editor
Ok, let me give some background. I have an XML document that I am parsing and reading in as a JTree. Works fine.
Next, I have overwritten the DefaultTreeCellEditor to return a JCheckBox and in this implementation of the getTreeCellEditorComponent(), I actually tell the node that he is selected. Works great.
Next, I have overwritten the DefaultTreeCellRenderer to return a JCheckBox and in the implementation of the getTreeCellEditorComponenet, I actually check to see if the Node is selected in the tree based upon the isSelected state of the actual Tree Node set in the tree cell editor, and if so, I set the JCheckBox to selected(true).Works Great.
Now, here is the issue. If a node in the tree is selected that contains children, then I want all of the children of that node to also be selected. However, when I select a node with children only the selected node is changed, and then a few moments later, the system repaints the entire tree and ALL nodes int the tree are set to a selected state. Strange? Yes. Any ideas?? WONDERFUL!! :)
Here is the TreeCellEditor code:
public Component getTreeCellEditorComponent(JTree tree,
Object value,
boolean isSelected,
boolean expanded,
boolean leaf,
int row)
elementCheckBox_ = new JCheckBox();
Component result = null;
System.out.println("isSelected? Editor = " + isSelected);
TreePath newPath = tree.getPathForRow(row);
System.out.println("value = " + value.getClass().toString());
if(value instanceof IMarketTreeNodeElement)
if(isSelected)
if(((IMarketTreeNodeElement)value).isSelected())
((IMarketTreeNodeElement)value).setSelected(false);
else
((IMarketTreeNodeElement)value).setSelected(true);
elementCheckBox_.setSelected(isSelected);
return elementCheckBox_;
Here is the TreeCellRenderer code:
public Component getTreeCellRendererComponent(JTree tree,
Object value,
boolean selected,
boolean expanded,
boolean leaf,
int row,
boolean hasFocus)
Color colSelBorderCol = UIManager.getColor
("Tree.selectionBorderColor");
selBorder_ = BorderFactory.createLineBorder(colSelBorderCol, 1);
normBorder_ = BorderFactory.createEmptyBorder(1,1,1,1);
elementCheckBox_.setText(value.toString());
if(selected)
elementCheckBox_.setSelected(selected);
elementCheckBox_.setForeground(Color.YELLOW);
elementCheckBox_.setBackground(Color.RED);
else
elementCheckBox_.setForeground(tree.getForeground());
elementCheckBox_.setBackground(tree.getBackground());
if (hasFocus)
elementCheckBox_.setBorder(selBorder_);
else
elementCheckBox_.setBorder(normBorder_);
return elementCheckBox_;
Here is the Node Code setting all child nodes to selected:
public void setSelected(boolean selected)
isSelected_ = selected;
if(isSelected_)
if((this.getTagName() == "MARKET") ||
(this.getTagName() == "TIER") &&
(this.getChildCount() != 0))
selectChildren(true);
else
if((this.getTagName() == "MARKET") ||
(this.getTagName() == "TIER") &&
(this.getChildCount() != 0))
selectChildren(false);
public boolean isSelected()
return isSelected_;
public void selectChildren(boolean selected)
int children = getChildCount();
for(int i = 0; i < children; i++)
IMarketTreeNodeElement elem = (IMarketTreeNodeElement)
this.getChildNodes().item(i);
isSelected_ = selected;
Thanks for any help! :-)I tried to run your sample code and it won't compile. The header files:
#include
#include
#include
#include
#include
do not exist on my install of MeasurementStudio. I am a bit suspicous that I don't have the latest and greatest (loading the dialong resouce gave version warnings). Here is one of my header file headers:
//==============================================================================
// Title : NiAxes3d.h
// Copyright : National Instruments 1999. All Rights Reserved.
// Purpose : Defines the CNiAxes3D class.
//==============================================================================
I
looked on your updates site and don't really see an update that applies to ComponentWorks or MeasurementStudio. My version per the MAX program for 3DControls is 3.5.549.
Do I need a newer version? What do I have to do to get the updated version? What does it cost?
Chuck -
JTree selection problem when using custom renderer and editor
Hello:
I created a JTree with custom renderer and editor.
The customization makes JCheckBox to be the component
responsible for editing and rendering.
The problem is that when I click on the node with the checkbox
the JTree selection model does not get updated.
Without customizations of the editor and renderer the MouseEvent would be fired and BasicTreeUI$MouseHandler.mousePressed() method would call
the selectPathForEvent() method which would be responsible for updating
the selection model. At the same time if I attach a mouse listener to the JTree (customized) I see the events when clicking on the nodes. It seems like the MouseEvent gets lost and somehow as a result of which the selection model does not get updated.
Am I missing something?
Thanks
AlexanderYou probably forgot to call super.getTreeCellRendererComponent(...) at the beginning of your getTreeCellRendererComponent(...) method in your custom renderer.
Or maybe in the getTreeCellEditorComponent(...) of the TreeCellEditor...
Maybe you are looking for
-
Problems w/ continuous play & next/prev. song controls
i am having large issues with the next and previous song controls. the controls in the top left corner to the right and to the left of the play/pause button only stop the current playing song when pressed, and when i press the left/right arrow keys o
-
Service Tax credit posting not happening at the time of Service Entry sheet
Hi I am accepting (releasing) service entry sheet of some services. Entry was posted: Service Expense A/c.. Dr To SR / IR A/c... As per new service tax law, we can take credit at the time of accrual of services i.e. at the time of accepting service e
-
2LIS_02_ITM - Deleted items are not in the ODS 0PUR_O01
Hello, We activated 2LIS_02_ITM extractor. We noticed that the deleted order items are not available in the ODS 0PUR_O01. SAP Note 578471 (Deleted positions in BW and statistics) explains that deleted items are not "statistical" relevant. However, th
-
Finance documents - Letter of credit - sales order value than FD value?
Hi, we are looking at this function of finance documents (ENLO, VN11n). Scenario: Sales Order value : 1 Mio USD Finance Document value: 0.6 Mio USD I want to create the FD document now fixed for the amount without specifiying an over
-
Import Function INACTIVE - quite strange
I'm lost! 1/ I was importing from a JVC GRD-24 DV, without problem. The battery was quite empty. 2/ Suddenly the import shut down because the camera missed power. 3/ OK. I charged the battery. 4/ I tried to carry on importing. Impossible. The functio