JTextPane in JDK1.1.8
hi
i need to display html content in JTextPane of JDK1.1.8.for that i coded as follows:
String text="<html><body>‘ Hi,Manjit’</body></html>";
JTextPane tp = new JTextPane();
tp.setContentType("text/html");
tp.setText(text);
but its not converting the special character as expected.
same code fragment is working for JDK1.4.
Any clue.
Thanks
Swing, i.e. any component that is part of the javax.swing.JComponent package, doesn't work with JDK/JREs pre-1.2
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ostrm.flush(); but while reading the file through the following code the image is ok but the text is corrupted and showing some other mixed characters:
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Hi,
I am facing huge memory leak problems with JTextArea/JTextPane. After considerable investigation, I found out that the Document associated with the component is not being GC'ed properly. I ran OptimizeIt and found out that the memory is being consumed by the JTextPane.setText() method. I have implmented a HTML viewer to display large amounts of HTML data and it is leaking memory like crazy on each successive execution. Any thoughts ??
JDK1.4.2_01, WinXP
Here is the code fragment:
public class ReportViewer extends BaseFrame implements FontChange_int
private String cReport;
private boolean testMode = false;
// Graphical components
private BorderLayout cMainLayout;
private JButton cClose;
private JTextPane cRptPane;
private Button cClose2;
private ViewUpdater cViewUpdater = null;
// Constants
final static int startupXSize = 650;
final static int startupYSize = 500;
// Methods
public ReportViewer(String report, ReportMain main)
// BaseFrame extends JFrame
super("Reports Viewer", true, startupXSize, startupYSize);
testMode = false;
cReport = report;
cViewUpdater = new ViewUpdater();
initialize();
public void initialize()
// Create main layout manager
cMainLayout = new BorderLayout();
getContentPane().setLayout(cMainLayout);
// Quick button bar - print, export, save as
JToolBar topPanel = new JToolBar();
topPanel.setBorder(new BevelBorder(BevelBorder.RAISED) );
java.net.URL url;
topPanel.add(Box.createHorizontalStrut(10));
url = Scm.class.getResource("images/Exit.gif");
cClose = new Button(new ImageIcon(url), true);
cClose.setToolTipText("Close Window");
topPanel.add(cClose);
getContentPane().add(topPanel, BorderLayout.NORTH);
// Main view window - HTML
cRptPane = new JTextPane();
cRptPane.setContentType("text/html");
cRptPane.setEditable(false);
JScrollPane sp = new JScrollPane(cRptPane);
getContentPane().add(sp, BorderLayout.CENTER);
// Main button - Close
JPanel bottomPanel = new JPanel();
url = Scm.class.getResource("images/Exit.gif");
cClose2 = new Button(new ImageIcon(url), "Close");
bottomPanel.add(cClose2);
getContentPane().add(bottomPanel, BorderLayout.SOUTH);
cClose.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
closeWindow();
cClose2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
closeWindow();
show();
cViewUpdater.setText(cReport);
SwingUtilities.invokeLater(cViewUpdater);
protected void
closeWindow()
super.closeWindow();
// If I add the following lines, the GC reclaims
// part of the memory but does not flush out the text
// component as a whole
/*Document doc = cRptPane.getDocument();
try
doc.remove(0,doc.getLength());
catch(Exception e) {;}
doc=null; */
cRptPane=null;
cReport = null;
cViewUpdater = null;
dispose();
private class ViewUpdater implements Runnable
private String cText = null;
public ViewUpdater() {;}
public void
setText(String text) {
cText = text;
public void
run() {
cRptPane.setText(cText);
cRptPane.setCaretPosition(0);
cText = null;
// Local main - for testing
public static void main(String args[])
//new ReportViewer(str,comp);
Sudarshan
www.spectrumscm.comHi,
I am facing huge memory leak problems with JTextArea/JTextPane. After considerable investigation, I found out that the Document associated with the component is not being GC'ed properly. I ran OptimizeIt and found out that the memory is being consumed by the JTextPane.setText() method. I have implmented a HTML viewer to display large amounts of HTML data and it is leaking memory like crazy on each successive execution. Any thoughts ??
JDK1.4.2_01, WinXP
Here is the code fragment:
public class ReportViewer extends BaseFrame implements FontChange_int
private String cReport;
private boolean testMode = false;
// Graphical components
private BorderLayout cMainLayout;
private JButton cClose;
private JTextPane cRptPane;
private Button cClose2;
private ViewUpdater cViewUpdater = null;
// Constants
final static int startupXSize = 650;
final static int startupYSize = 500;
// Methods
public ReportViewer(String report, ReportMain main)
// BaseFrame extends JFrame
super("Reports Viewer", true, startupXSize, startupYSize);
testMode = false;
cReport = report;
cViewUpdater = new ViewUpdater();
initialize();
public void initialize()
// Create main layout manager
cMainLayout = new BorderLayout();
getContentPane().setLayout(cMainLayout);
// Quick button bar - print, export, save as
JToolBar topPanel = new JToolBar();
topPanel.setBorder(new BevelBorder(BevelBorder.RAISED) );
java.net.URL url;
topPanel.add(Box.createHorizontalStrut(10));
url = Scm.class.getResource("images/Exit.gif");
cClose = new Button(new ImageIcon(url), true);
cClose.setToolTipText("Close Window");
topPanel.add(cClose);
getContentPane().add(topPanel, BorderLayout.NORTH);
// Main view window - HTML
cRptPane = new JTextPane();
cRptPane.setContentType("text/html");
cRptPane.setEditable(false);
JScrollPane sp = new JScrollPane(cRptPane);
getContentPane().add(sp, BorderLayout.CENTER);
// Main button - Close
JPanel bottomPanel = new JPanel();
url = Scm.class.getResource("images/Exit.gif");
cClose2 = new Button(new ImageIcon(url), "Close");
bottomPanel.add(cClose2);
getContentPane().add(bottomPanel, BorderLayout.SOUTH);
cClose.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
closeWindow();
cClose2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
closeWindow();
show();
cViewUpdater.setText(cReport);
SwingUtilities.invokeLater(cViewUpdater);
protected void
closeWindow()
super.closeWindow();
// If I add the following lines, the GC reclaims
// part of the memory but does not flush out the text
// component as a whole
/*Document doc = cRptPane.getDocument();
try
doc.remove(0,doc.getLength());
catch(Exception e) {;}
doc=null; */
cRptPane=null;
cReport = null;
cViewUpdater = null;
dispose();
private class ViewUpdater implements Runnable
private String cText = null;
public ViewUpdater() {;}
public void
setText(String text) {
cText = text;
public void
run() {
cRptPane.setText(cText);
cRptPane.setCaretPosition(0);
cText = null;
// Local main - for testing
public static void main(String args[])
//new ReportViewer(str,comp);
Sudarshan
www.spectrumscm.com -
Can anybody tell me the problem with this code when compiled in jdk1.4
Can anybody help me find out the error in this code.
Try to drag a file from your desktop and drop it on the first textpane on my GUI. Then try to drag another file. This time the dragdrop event handler throws a null pointer exception. This happened when I compiled the code with jdk1.4. With jdk1.3 it is working fine. Actually, I need jdk1.4 to get the systemicons for the files I drop on my desktop.
/* Client.java*/
import java.util.Vector;
import java.util.Enumeration;
import java.util.Arrays;
import java.awt.*;
import java.awt.event.*;
import java.rmi.*;
import java.rmi.server.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.filechooser.*;
import java.io.*;
import java.awt.dnd.*;
import java.awt.datatransfer.*;
import java.util.Iterator;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
import java.util.Hashtable;
import javax.swing.text.*;
import javax.swing.event.*;
public class Client extends JFrame{
static String newline = System.getProperty("line.separator");
static Client client;
//ServerInterface server;
//ClientProperties clp;
Vector v1=new Vector();
ByteArrayOutputStream out;
Runtime r1;
//file objects,together with array of bytes
Hashtable files=new Hashtable(); //files sent
Hashtable rfiles=new Hashtable(); //files received
//file objects,together with button handlers
Hashtable hfiles=new Hashtable(); //files sent,files received
JButton button1=new JButton();
JButton button2=new JButton();
JButton button3=new JButton();
JLabel label1=new JLabel();
JLabel label2=new JLabel();
JLabel label3=new JLabel();
JLabel label4=new JLabel();
JLabel label5=new JLabel();
JLabel label6=new JLabel();
JLabel label7=new JLabel();
JLabel label8=new JLabel();
JOptionPane dialog=new JOptionPane();
JFileChooser chooser = new JFileChooser();
JPanel panel1;
JPanel panel2;
DropTarget dtarget;
DragSource dsource;
JTextPane textArea1=new JTextPane();
TextArea textArea2=new TextArea();
JTextPane textpanel=new JTextPane();
Style defstyle,style;
StyledDocument doc,doc1;
JPopupMenu popup;
JTree tree;
JScrollPane jsppane;
JScrollPane jsp,jsp2;
DefaultMutableTreeNode top;
Container cp;
private String toalias;
private String togroup;
private String fromalias;
private String fromgroup;
private boolean CONNECT;
public Client()
cp=getContentPane();
cp.setLayout(null);
setForeground(java.awt.Color.red);
setFont(new Font("Dialog", Font.PLAIN, 14));
setVisible(false);
label1.setText(" CHAT APPLICATION");
cp.add(label1);
label1.setFont(new Font("Dialog", Font.BOLD, 16));
label1.setBounds(72,20,319,30);
label2.setText("List of Users Connected.");
cp.add(label2);
label2.setForeground(java.awt.Color.blue);
label2.setFont(new Font("Dialog", Font.BOLD, 12));
label2.setBounds(24,60,192,26);
label8.setBounds(280,60,100,26);
cp.add(label8);
cp.add(textArea2);
textArea2.setBounds(204,120,268,90);
jsppane=new JScrollPane(textArea1);
doc1=textArea1.getStyledDocument();
jsppane.setBounds(12,264,456,109);
cp.add(jsppane);
label3.setText("TO::");
cp.add(label3);
label3.setFont(new Font("Dialog", Font.BOLD, 12));
label3.setBounds(12,228,36,20);
cp.add(label4);
label4.setBackground(java.awt.Color.lightGray);
label4.setBounds(60,228,172,19);
label5.setText("SERVER RESPONSE");
cp.add(label5);
label5.setFont(new Font("Dialog", Font.BOLD, 12));
label5.setBounds(204,96,204,21);
label7.setText("MESSAGE FOR YOU.");
cp.add(label7);
label7.setFont(new Font("Dialog", Font.BOLD, 14));
label7.setBounds(12,371,288,25);
jsp2=new JScrollPane(textpanel);
setTextPaneStyle();
jsp2.setBounds(12,401,456,109);
cp.add(jsp2);
button1.setLabel("Send");
button1.setEnabled(false);
cp.add(button1);
button1.setBackground(java.awt.Color.lightGray);
button1.setForeground(java.awt.Color.black);
button1.setFont(new Font("Dialog", Font.BOLD|Font.ITALIC, 10));
button1.setBounds(60,520,78,36);
button2.setLabel("Attach");
//button2.setEnabled(false);
cp.add(button2);
button2.setBackground(java.awt.Color.lightGray);
button2.setForeground(java.awt.Color.black);
button2.setFont(new Font("Dialog", Font.BOLD|Font.ITALIC, 10));
button2.setBounds(180,520,72,36);
button3.setLabel("Connect");
cp.add(button3);
button3.setBackground(java.awt.Color.lightGray);
button3.setForeground(java.awt.Color.black);
button3.setFont(new Font("Dialog", Font.BOLD|Font.ITALIC, 10));
button3.setBounds(288,520,72,33);
setSize(500,620);
show();
addWindowListener(new WindowEventHandler());
button1.addActionListener(new ButtonHandler());
button2.addActionListener(new ButtonHandler());
button3.addActionListener(new ButtonHandler());
textArea1.addContainerListener(new ComponentHandler());
dtarget=new DropTarget(textArea1,new DragDropHandler());
textArea2.setEnabled(false);
textpanel.setEnabled(false);
r1=Runtime.getRuntime();
r1.addShutdownHook(new onshutdown());
addMenu();
cp.repaint();
//adds attachments to the textArea1
synchronized private void addAttach(java.util.List fileList)
Iterator iterator=fileList.iterator();
JButton bw;
while(iterator.hasNext())
File file=(File)iterator.next();
Icon icon=chooser.getIcon(file);
bw=new JButton(icon);
bw.setBackground(java.awt.Color.gray);
bw.setToolTipText(file.getAbsolutePath());
bw.addMouseListener(new AttachmentHandler());
Dimension d1=new Dimension(icon.getIconWidth(),icon.getIconHeight());
bw.setMaximumSize(d1);
hfiles.put(bw,file);
textArea1.insertComponent(bw);
textArea1.setCaretPosition(doc1.getLength());
bw.setSize(icon.getIconWidth(),icon.getIconHeight());
//only one file at a time
break;
cp.repaint();
public void setAudioStream(ByteArrayOutputStream out)
this.out=out;
private void addMenu()
JMenuBar mbar=new JMenuBar();
mbar.setVisible(true);
mbar.setBounds(0,0,500,20);
mbar.setBackground(java.awt.Color.gray);
//first menu
JMenu m1=new JMenu("Connection");
m1.setBounds(0,0,80,20);
m1.setBackground(java.awt.Color.gray);
JMenuItem mitem1=new JMenuItem("Connect");
JMenuItem mitem2=new JMenuItem("Disconnect");
m1.add(mitem1);
m1.add(mitem2);
mitem1.addActionListener(new ButtonHandler());
mitem2.addActionListener(new ButtonHandler());
mbar.add(m1);
//second menu
JMenu m2=new JMenu("Send...");
m2.setBounds(90,0,80,20);
m2.setBackground(java.awt.Color.gray);
JMenuItem mitem3=new JMenuItem("Send");
JMenuItem mitem4=new JMenuItem("Send with Audio...");
mitem3.addActionListener(new ButtonHandler());
mitem4.addActionListener(new ButtonHandler());
m2.add(mitem3);
m2.add(mitem4);
mbar.add(m2);
cp.add(mbar);
private void setTextPaneStyle()
StyleContext stylecontext =StyleContext.getDefaultStyleContext();
defstyle=stylecontext.getStyle(StyleContext.DEFAULT_STYLE);
doc= textpanel.getStyledDocument();
//style 1
style= textpanel.addStyle("bold",defstyle);
StyleConstants.setBackground(style,Color.white);
StyleConstants.setForeground(style,Color.blue);
StyleConstants.setItalic(style, false);
StyleConstants.setBold(style, true);
StyleConstants.setFontSize(style,16);
//style 2
style= textpanel.addStyle("normal",defstyle);
StyleConstants.setBackground(style,Color.white);
StyleConstants.setForeground(style,Color.black);
StyleConstants.setItalic(style, false);
StyleConstants.setBold(style, false);
StyleConstants.setFontSize(style,14);
//style3
style= textpanel.addStyle("attach",defstyle);
StyleConstants.setBackground(style,Color.white);
StyleConstants.setForeground(style,Color.red);
StyleConstants.setItalic(style, true);
StyleConstants.setBold(style, false);
StyleConstants.setFontSize(style,12);
//remote method called by server
public void addClient(String alias,String group,JTree tree)
//if old client remove old tree
if(!alias.equals(""))
cp.remove(this.jsp);
//add new tree
this.tree=tree;
setTreeModel();
getSound(2);
if(!alias.equals(""))
textArea2.append("\nNew Client:" + alias + "has joined");
else
textArea2.append("\nYou have been connected to the Server.");
jsp=new JScrollPane(this.tree);
jsp.setBounds(12,96,168,120);
jsp.setBackground(java.awt.Color.lightGray);
cp.add(jsp);
this.tree.addMouseListener(new MouseHandler());
//remote method called by server
public void sendMessage(String str,Hashtable rfiles,String alias,String group) throws RemoteException
receiveMessage(str,rfiles,alias,group);
//remote method called by server
public void removeClient(JTree tree,String alias,String group) throws RemoteException
cp.remove(this.jsp);
this.tree=tree;
setTreeModel();
getSound(3);
jsp=new JScrollPane(this.tree);
jsp.setBounds(12,96,168,120);
jsp.setBackground(java.awt.Color.lightGray);
cp.add(jsp);
this.tree.addMouseListener(new MouseHandler());
textArea2.append("\nClient:" + alias + "has disconnected");
private void receiveMessage(String str,Hashtable rfiles,String alias,String group)
boolean flag=true;
UIManager.put("JFrame.activeTitleBackground", new Color(64,128,255));
UIManager.put("JFrame.activeTitleForeground", Color.white);
UIManager.put("JFrame.inactiveTitleBackground", new Color(128,128,128));
UIManager.put("JFrame.inactiveTitleForeground", Color.black);
SwingUtilities.updateComponentTreeUI(this);
try{
if(alias.equals(""))
doc.insertString(doc.getLength(),"CHATMASTER>>",textpanel.getStyle("bold"));
doc.insertString(doc.getLength(),str+ newline,textpanel.getStyle("normal"));
else
doc.insertString(doc.getLength(),alias + "@" + group + ">>",textpanel.getStyle("bold"));
doc.insertString(doc.getLength(),str,textpanel.getStyle("normal"));
//add files to textpanel
if(rfiles!=null && rfiles.size()>0)
doc.insertString(doc.getLength(),newline+"Attachments>>",textpanel.getStyle("attach"));
showattach(rfiles);
addtoList(rfiles);
doc.insertString(doc.getLength(),newline,textpanel.getStyle("normal"));
catch(Exception e)
e.printStackTrace();
dialog.showMessageDialog(client,e.toString(),"Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
cp.repaint();
protected boolean ContactServer(String alias,String servername,String group)
try{
//UnicastRemoteObject.exportObject(this);
//server=(ServerInterface)Naming.lookup("//gpt02d05:5500/" + servername);
// server.notifyMe(this,alias,group);
//change the settings of buttons
button1.setEnabled(true);
button2.setEnabled(true);
button3.setLabel("Disconnect");
label8.setVisible(true);
label8.setText(" Welcome::" + alias);
//putting values of alias and group for sending messages
fromalias=alias;
fromgroup=group;
CONNECT=true;
return true;
catch(UnsupportedOperationException e)
dialog.showMessageDialog(client,"Client with the Same Alias in " + group + " already exists","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
try{
// UnicastRemoteObject.unexportObject(client,true);
catch(Exception ev){System.out.println(ev.toString());}
catch(Exception e)
dialog.showMessageDialog(client,"Unable to connect to Server","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
try{
// UnicastRemoteObject.unexportObject(client,true);
catch(Exception ev){System.out.println(ev.toString());}
return false;
public static void main(String args[]) throws RemoteException{
client=new Client();
}//main ends
public void getSound(int count)
Toolkit t1=getToolkit();
for(int i=0;i<count;i++)
t1.beep();
try{
Thread.sleep(500);
catch(Exception e){}
public void setTreeModel()
ImageIcon i1=new ImageIcon("Lock.gif","No Users");
ImageIcon i2=new ImageIcon("Connec.gif","Users in Group");
ImageIcon i3=new ImageIcon("authorbn.gif","An User");
DefaultTreeCellRenderer dr1= new DefaultTreeCellRenderer();
dr1.setClosedIcon(i1);
dr1.setOpenIcon(i2);
dr1.setLeafIcon(i3);
dr1.setTextSelectionColor(java.awt.Color.red);
tree.setCellRenderer(dr1);
//add received files to the list
private void addtoList(Hashtable rfiles)
Enumeration filelist=rfiles.keys();
while(filelist.hasMoreElements())
File file=(File)filelist.nextElement();
this.rfiles.put(file,rfiles.get(file));
//show the attachments received
private void showattach(Hashtable rfiles)
Enumeration filelist=rfiles.keys();
dsource=DragSource.getDefaultDragSource();
JButton b1=null;
while(filelist.hasMoreElements())
File file=(File)filelist.nextElement();
Icon icon=chooser.getIcon(file);
b1=new JButton(icon);
b1.setBackground(java.awt.Color.gray);
b1.setToolTipText(file.getName());
b1.addMouseListener(new AttachmentHandler());
Dimension d1=new Dimension(icon.getIconWidth(),icon.getIconHeight());
b1.setMaximumSize(d1);
hfiles.put(b1,file);
textpanel.setCaretPosition(doc.getLength());
textpanel.insertComponent(b1);
b1.setSize(icon.getIconWidth(),icon.getIconHeight());
dsource.createDefaultDragGestureRecognizer(b1, DnDConstants.ACTION_COPY_OR_MOVE,new DragGestureHandler());
cp.repaint();
private void savefile(File file,Object parent)
//ExtensionFileFilter filter = new ExtensionFileFilter(false);
//filter.addExtension("txt",true);
//chooser.setFileFilter(filter);
int returnVal = chooser.showSaveDialog(client);
if(returnVal ==JFileChooser.APPROVE_OPTION)
try{
FileOutputStream fstream=new FileOutputStream(chooser.getSelectedFile());
//decide whether the file received or sent is to be saved
if(((Container)parent).equals(textArea1))
fstream.write((byte[])files.get(file));
else
fstream.write((byte[])rfiles.get(file));
fstream.close();
System.out.println(file.getName());
catch(Exception e)
{System.out.println(e.toString()); }
private void openfile(File file,Object parent)
File tempfile=null;
try{
String fname=file.getName();
tempfile=File.createTempFile("temp",fname.substring(fname.lastIndexOf(".")));
FileOutputStream fstream=new FileOutputStream(tempfile);
System.out.println(tempfile.getAbsolutePath());
//decide whether the file received or sent is to be saved
if(((Container)parent).equals(textArea1))
fstream.write((byte[])files.get(file));
else
fstream.write((byte[])rfiles.get(file));
fstream.close();
catch(Exception e){System.out.println(e.toString());}
try{
Process p1=r1.exec("cmd /c start " + tempfile.getAbsolutePath());
p1.waitFor();
catch(Exception e){System.out.println(e.toString());}
//inner classes
class ComponentHandler implements ContainerListener{
public void componentRemoved(ContainerEvent ev)
Container cont=(Container)ev.getChild();
if(cont.getComponentCount()>0)
JButton but=(JButton)cont.getComponent(0);
files.remove((File)hfiles.get(but));
hfiles.remove(but);
public void componentAdded(ContainerEvent ev){}
class AttachmentHandler extends MouseAdapter{
public void mouseClicked(MouseEvent ev){
if(ev.getModifiers()==4)
Component comp=(Component)ev.getSource();
File file=(File)hfiles.get(comp);
popup=new JPopupMenu();
JMenuItem popopen=new JMenuItem("Open");
JMenuItem popsave=new JMenuItem("Save As..");
popup.add(popopen);
System.out.println(comp.getParent().getParent().getClass().toString());
popopen.addActionListener(new ButtonHandler(file,comp.getParent().getParent()));
popup.add(popsave);
popsave.addActionListener(new ButtonHandler(file,comp.getParent().getParent()));
popup.show(comp,12,12);
class DragGestureHandler extends Vector implements DragGestureListener,DragSourceListener,Transferable{
final static int FILE = 0;
final static int STRING = 1;
final static int PLAIN = 2;
DataFlavor flavors[] = {DataFlavor.javaFileListFlavor,DataFlavor.stringFlavor,DataFlavor.plainTextFlavor};
public void dragDropEnd(DragSourceDropEvent ev){}
public void dragEnter(DragSourceDragEvent ev){}
public void dragExit(DragSourceEvent ev){}
public void dragOver(DragSourceDragEvent ev){}
public void dropActionChanged(DragSourceDragEvent ev){}
public void dragGestureRecognized(DragGestureEvent ev)
System.out.println("recognized");
File file=(File)hfiles.get(ev.getComponent());
addElement(file);
ev.startDrag(DragSource.DefaultCopyDrop,this,this);
/* Returns the array of flavors in which it can provide the data. */
public synchronized DataFlavor[] getTransferDataFlavors() {
return flavors;
/* Returns whether the requested flavor is supported by this object. */
public boolean isDataFlavorSupported(DataFlavor flavor) {
boolean b = false;
b |=flavor.equals(flavors[FILE]);
b |= flavor.equals(flavors[STRING]);
b |= flavor.equals(flavors[PLAIN]);
return (b);
public synchronized Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException,IOException
if(flavor.equals(flavors[FILE])){return this;}
else if (flavor.equals(flavors[PLAIN])) {
return new StringReader(((File)elementAt(0)).getAbsolutePath());
} else if (flavor.equals(flavors[STRING])) {
return((File)elementAt(0)).getAbsolutePath();
} else {
throw new UnsupportedFlavorException(flavor);
//inner class for draging in the files on java frame
class DragDropHandler implements DropTargetListener{
public void dragEnter(DropTargetDragEvent ev){
public void dragExit(DropTargetEvent ev){
public void dragOver(DropTargetDragEvent ev){
public void drop(DropTargetDropEvent ev){
Transferable tf1=ev.getTransferable();
DataFlavor fl[]=ev.getCurrentDataFlavors();
if(ev.isDataFlavorSupported(DataFlavor.javaFileListFlavor))
ev.acceptDrop (DnDConstants.ACTION_COPY_OR_MOVE);
try{
java.util.List fileList = (java.util.List)tf1.getTransferData(DataFlavor.javaFileListFlavor);
Iterator iterator = fileList.iterator();
while (iterator.hasNext())
File file = (File)iterator.next();
if(file.isFile())
Icon icon=chooser.getIcon(file);
FileInputStream fstream=new FileInputStream(file);
int filedata=(new Double(file.length())).intValue();
byte bytes[]=new byte[filedata];
fstream.read(bytes);
files.put(file,bytes);
ev.getDropTargetContext().dropComplete(true);
addAttach(fileList);
catch(Exception e)
{System.out.println(e.toString() + "here");}
public void dropActionChanged(DropTargetDragEvent ev){
class MouseHandler extends MouseAdapter{
public void mouseClicked(MouseEvent me)
TreePath tp=tree.getPathForLocation(me.getX(),me.getY());
if(tp!=null)
if(tp.getPathCount()==3)
toalias=tp.getPathComponent(2).toString();
togroup=tp.getPathComponent(1).toString();
System.out.println(toalias);
if (!(toalias.equals(fromalias) && togroup.equals(fromgroup)))
System.out.println("hh " + toalias);
label4.setText(tp.getPathComponent(2).toString() + "_@" + tp.getPathComponent(1).toString());
class ButtonHandler implements ActionListener{
private File file;
private Object parent;
//constructors
public ButtonHandler()
public ButtonHandler(File file,Object parent)
this.file=file;
this.parent=parent;
//other functions
public void actionPerformed(ActionEvent ev){
String s=ev.getActionCommand();
System.out.println(s);
if(s.equals("Send with Audio..."))
//Audio audio=new Audio(client,false,"CAPTURE");
if(s.equals("Disconnect"))
try{
// server.disconnect(client);
client.getSound(3);
cp.remove(jsp);
label6.setVisible(false);
//UnicastRemoteObject.unexportObject(client,true);
button3.setLabel("Connect");
textArea2.append("\nYou have been disconnected to Server");
client.repaint();
catch(Exception e)
System.out.println(e.toString());
if(s.equals("Connect"))
// clp=new ClientProperties(client,false);
if(s.equals("Save As.."))
savefile(file,parent);
if(s.equals("Open"))
openfile(file,parent);
if(s.equals("Attach"))
//ExtensionFileFilter filter = new ExtensionFileFilter(false);
//filter.addExtension(".txt",true);
//filter.setDescription("Text Files(.txt)");
// chooser.setFileFilter(filter);
chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
//chooser.setMultiSelectionEnabled(true);
int returnVal = chooser.showOpenDialog(client);
if(returnVal ==JFileChooser.APPROVE_OPTION)
//File fp[]=chooser.getSelectedFiles();
File fp[]=new File[1];
fp[0]=chooser.getSelectedFile();
int i=0;
while(i<fp.length)
try{
File file=fp;
Icon icon=chooser.getIcon(file);
FileInputStream fstream=new FileInputStream(file);
int filedata=(new Double(file.length())).intValue();
byte bytes[]=new byte[filedata];
fstream.read(bytes);
files.put(file,bytes);
catch(Exception e){dialog.showMessageDialog(client,e.toString(),"Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
return; }
i++;
java.util.List fileList=Arrays.asList(fp);
addAttach(fileList);
if(s.equals("Send"))
try{
if(toalias==null)
dialog.showMessageDialog(client,"Select the Recepient First!!","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
return;
if(toalias!=null && togroup!=null && (!toalias.equals(fromalias)))
// server.sendMessage(textArea1.getText(),files,toalias,togroup,fromalias,fromgroup);
textArea1.setText("");
catch(Exception e)
e.printStackTrace();
}//if ends
class WindowEventHandler extends WindowAdapter{
public void windowClosing(WindowEvent ev){
try{
//server.disconnect(client);
client.getSound(3);
// UnicastRemoteObject.unexportObject(client,true);
catch(Exception e){System.out.println(e.toString());}
dispose();
private class onshutdown extends Thread{
public void run(){
try{
//server.disconnect(client);
//UnicastRemoteObject.unexportObject(client,true);
catch(Exception e){}
}//run endsHere is the working code :
There was an error line 724
File file=fp; -> File file=fp[0];
Several method were deprecated and try to replace the deprecated static field : DataFlavor.plainTextFlavor which was deprecated since 1.4.
/* Client.java*/
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.rmi.*;
import java.rmi.server.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.filechooser.*;
import java.io.*;
import java.awt.dnd.*;
import java.awt.datatransfer.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
import javax.swing.text.*;
import javax.swing.event.*;
public class Client extends JFrame{
static String newline = System.getProperty("line.separator");
static Client client;
//ServerInterface server;
//ClientProperties clp;
Vector v1=new Vector();
ByteArrayOutputStream out;
Runtime r1;
//file objects,together with array of bytes
Hashtable files=new Hashtable(); //files sent
Hashtable rfiles=new Hashtable(); //files received
//file objects,together with button handlers
Hashtable hfiles=new Hashtable(); //files sent,files received
JButton button1=new JButton();
JButton button2=new JButton();
JButton button3=new JButton();
JLabel label1=new JLabel();
JLabel label2=new JLabel();
JLabel label3=new JLabel();
JLabel label4=new JLabel();
JLabel label5=new JLabel();
JLabel label6=new JLabel();
JLabel label7=new JLabel();
JLabel label8=new JLabel();
JOptionPane dialog=new JOptionPane();
JFileChooser chooser = new JFileChooser();
JPanel panel1;
JPanel panel2;
DropTarget dtarget;
DragSource dsource;
JTextPane textArea1=new JTextPane();
TextArea textArea2=new TextArea();
JTextPane textpanel=new JTextPane();
Style defstyle,style;
StyledDocument doc,doc1;
JPopupMenu popup;
JTree tree;
JScrollPane jsppane;
JScrollPane jsp,jsp2;
DefaultMutableTreeNode top;
Container cp;
private String toalias;
private String togroup;
private String fromalias;
private String fromgroup;
private boolean CONNECT;
public Client()
cp=getContentPane();
cp.setLayout(null);
setForeground(java.awt.Color.red);
setFont(new Font("Dialog", Font.PLAIN, 14));
setVisible(false);
label1.setText(" CHAT APPLICATION");
cp.add(label1);
label1.setFont(new Font("Dialog", Font.BOLD, 16));
label1.setBounds(72,20,319,30);
label2.setText("List of Users Connected.");
cp.add(label2);
label2.setForeground(java.awt.Color.blue);
label2.setFont(new Font("Dialog", Font.BOLD, 12));
label2.setBounds(24,60,192,26);
label8.setBounds(280,60,100,26);
cp.add(label8);
cp.add(textArea2);
textArea2.setBounds(204,120,268,90);
jsppane=new JScrollPane(textArea1);
doc1=textArea1.getStyledDocument();
jsppane.setBounds(12,264,456,109);
cp.add(jsppane);
label3.setText("TO::");
cp.add(label3);
label3.setFont(new Font("Dialog", Font.BOLD, 12));
label3.setBounds(12,228,36,20);
cp.add(label4);
label4.setBackground(java.awt.Color.lightGray);
label4.setBounds(60,228,172,19);
label5.setText("SERVER RESPONSE");
cp.add(label5);
label5.setFont(new Font("Dialog", Font.BOLD, 12));
label5.setBounds(204,96,204,21);
label7.setText("MESSAGE FOR YOU.");
cp.add(label7);
label7.setFont(new Font("Dialog", Font.BOLD, 14));
label7.setBounds(12,371,288,25);
jsp2=new JScrollPane(textpanel);
setTextPaneStyle();
jsp2.setBounds(12,401,456,109);
cp.add(jsp2);
button1.setText("Send");
button1.setEnabled(false);
cp.add(button1);
button1.setBackground(java.awt.Color.lightGray);
button1.setForeground(java.awt.Color.black);
button1.setFont(new Font("Dialog", Font.BOLD|Font.ITALIC, 10));
button1.setBounds(60,520,78,36);
button2.setText("Attach");
//button2.setEnabled(false);
cp.add(button2);
button2.setBackground(java.awt.Color.lightGray);
button2.setForeground(java.awt.Color.black);
button2.setFont(new Font("Dialog", Font.BOLD|Font.ITALIC, 10));
button2.setBounds(180,520,72,36);
button3.setText("Connect");
cp.add(button3);
button3.setBackground(java.awt.Color.lightGray);
button3.setForeground(java.awt.Color.black);
button3.setFont(new Font("Dialog", Font.BOLD|Font.ITALIC, 10));
button3.setBounds(288,520,72,33);
setSize(500,620);
show();
addWindowListener(new WindowEventHandler());
button1.addActionListener(new ButtonHandler());
button2.addActionListener(new ButtonHandler());
button3.addActionListener(new ButtonHandler());
textArea1.addContainerListener(new ComponentHandler());
dtarget=new DropTarget(textArea1,new DragDropHandler());
textArea2.setEnabled(false);
textpanel.setEnabled(false);
r1=Runtime.getRuntime();
r1.addShutdownHook(new onshutdown());
addMenu();
cp.repaint();
//adds attachments to the textArea1
synchronized private void addAttach(java.util.List fileList)
Iterator iterator=fileList.iterator();
JButton bw;
while(iterator.hasNext())
File file=(File)iterator.next();
Icon icon=chooser.getIcon(file);
bw=new JButton(icon);
bw.setBackground(java.awt.Color.gray);
bw.setToolTipText(file.getAbsolutePath());
bw.addMouseListener(new AttachmentHandler());
Dimension d1=new Dimension(icon.getIconWidth(),icon.getIconHeight());
bw.setMaximumSize(d1);
hfiles.put(bw,file);
textArea1.insertComponent(bw);
textArea1.setCaretPosition(doc1.getLength());
bw.setSize(icon.getIconWidth(),icon.getIconHeight());
//only one file at a time
break;
cp.repaint();
public void setAudioStream(ByteArrayOutputStream out)
this.out=out;
private void addMenu()
JMenuBar mbar=new JMenuBar();
mbar.setVisible(true);
mbar.setBounds(0,0,500,20);
mbar.setBackground(java.awt.Color.gray);
//first menu
JMenu m1=new JMenu("Connection");
m1.setBounds(0,0,80,20);
m1.setBackground(java.awt.Color.gray);
JMenuItem mitem1=new JMenuItem("Connect");
JMenuItem mitem2=new JMenuItem("Disconnect");
m1.add(mitem1);
m1.add(mitem2);
mitem1.addActionListener(new ButtonHandler());
mitem2.addActionListener(new ButtonHandler());
mbar.add(m1);
//second menu
JMenu m2=new JMenu("Send...");
m2.setBounds(90,0,80,20);
m2.setBackground(java.awt.Color.gray);
JMenuItem mitem3=new JMenuItem("Send");
JMenuItem mitem4=new JMenuItem("Send with Audio...");
mitem3.addActionListener(new ButtonHandler());
mitem4.addActionListener(new ButtonHandler());
m2.add(mitem3);
m2.add(mitem4);
mbar.add(m2);
cp.add(mbar);
private void setTextPaneStyle()
StyleContext stylecontext =StyleContext.getDefaultStyleContext();
defstyle=stylecontext.getStyle(StyleContext.DEFAULT_STYLE);
doc= textpanel.getStyledDocument();
//style 1
style= textpanel.addStyle("bold",defstyle);
StyleConstants.setBackground(style,Color.white);
StyleConstants.setForeground(style,Color.blue);
StyleConstants.setItalic(style, false);
StyleConstants.setBold(style, true);
StyleConstants.setFontSize(style,16);
//style 2
style= textpanel.addStyle("normal",defstyle);
StyleConstants.setBackground(style,Color.white);
StyleConstants.setForeground(style,Color.black);
StyleConstants.setItalic(style, false);
StyleConstants.setBold(style, false);
StyleConstants.setFontSize(style,14);
//style3
style= textpanel.addStyle("attach",defstyle);
StyleConstants.setBackground(style,Color.white);
StyleConstants.setForeground(style,Color.red);
StyleConstants.setItalic(style, true);
StyleConstants.setBold(style, false);
StyleConstants.setFontSize(style,12);
//remote method called by server
public void addClient(String alias,String group,JTree tree)
//if old client remove old tree
if(!alias.equals(""))
cp.remove(this.jsp);
//add new tree
this.tree=tree;
setTreeModel();
getSound(2);
if(!alias.equals(""))
textArea2.append("\nNew Client:" + alias + "has joined");
else
textArea2.append("\nYou have been connected to the Server.");
jsp=new JScrollPane(this.tree);
jsp.setBounds(12,96,168,120);
jsp.setBackground(java.awt.Color.lightGray);
cp.add(jsp);
this.tree.addMouseListener(new MouseHandler());
//remote method called by server
public void sendMessage(String str,Hashtable rfiles,String alias,String group) throws RemoteException
receiveMessage(str,rfiles,alias,group);
//remote method called by server
public void removeClient(JTree tree,String alias,String group) throws RemoteException
cp.remove(this.jsp);
this.tree=tree;
setTreeModel();
getSound(3);
jsp=new JScrollPane(this.tree);
jsp.setBounds(12,96,168,120);
jsp.setBackground(java.awt.Color.lightGray);
cp.add(jsp);
this.tree.addMouseListener(new MouseHandler());
textArea2.append("\nClient:" + alias + "has disconnected");
private void receiveMessage(String str,Hashtable rfiles,String alias,String group)
boolean flag=true;
UIManager.put("JFrame.activeTitleBackground", new Color(64,128,255));
UIManager.put("JFrame.activeTitleForeground", Color.white);
UIManager.put("JFrame.inactiveTitleBackground", new Color(128,128,128));
UIManager.put("JFrame.inactiveTitleForeground", Color.black);
SwingUtilities.updateComponentTreeUI(this);
try{
if(alias.equals(""))
doc.insertString(doc.getLength(),"CHATMASTER>>",textpanel.getStyle("bold"));
doc.insertString(doc.getLength(),str+ newline,textpanel.getStyle("normal"));
else
doc.insertString(doc.getLength(),alias + "@" + group + ">>",textpanel.getStyle("bold"));
doc.insertString(doc.getLength(),str,textpanel.getStyle("normal"));
//add files to textpanel
if(rfiles!=null && rfiles.size()>0)
doc.insertString(doc.getLength(),newline+"Attachments>>",textpanel.getStyle("attach"));
showattach(rfiles);
addtoList(rfiles);
doc.insertString(doc.getLength(),newline,textpanel.getStyle("normal"));
catch(Exception e)
e.printStackTrace();
dialog.showMessageDialog(client,e.toString(),"Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
cp.repaint();
protected boolean ContactServer(String alias,String servername,String group)
try{
//UnicastRemoteObject.exportObject(this);
//server=(ServerInterface)Naming.lookup("//gpt02d05:5500/" + servername);
// server.notifyMe(this,alias,group);
//change the settings of buttons
button1.setEnabled(true);
button2.setEnabled(true);
button3.setText("Disconnect");
label8.setVisible(true);
label8.setText(" Welcome::" + alias);
//putting values of alias and group for sending messages
fromalias=alias;
fromgroup=group;
CONNECT=true;
return true;
catch(UnsupportedOperationException e)
dialog.showMessageDialog(client,"Client with the Same Alias in " + group + " already exists","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
try{
// UnicastRemoteObject.unexportObject(client,true);
catch(Exception ev){System.out.println(ev.toString());}
catch(Exception e)
dialog.showMessageDialog(client,"Unable to connect to Server","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
try{
// UnicastRemoteObject.unexportObject(client,true);
catch(Exception ev){System.out.println(ev.toString());}
return false;
public static void main(String args[]) throws RemoteException{
client=new Client();
}//main ends
public void getSound(int count)
Toolkit t1=getToolkit();
for(int i=0;i<count;i++)
t1.beep();
try{
Thread.sleep(500);
catch(Exception e){}
public void setTreeModel()
ImageIcon i1=new ImageIcon("Lock.gif","No Users");
ImageIcon i2=new ImageIcon("Connec.gif","Users in Group");
ImageIcon i3=new ImageIcon("authorbn.gif","An User");
DefaultTreeCellRenderer dr1= new DefaultTreeCellRenderer();
dr1.setClosedIcon(i1);
dr1.setOpenIcon(i2);
dr1.setLeafIcon(i3);
dr1.setTextSelectionColor(java.awt.Color.red);
tree.setCellRenderer(dr1);
//add received files to the list
private void addtoList(Hashtable rfiles)
Enumeration filelist=rfiles.keys();
while(filelist.hasMoreElements())
File file=(File)filelist.nextElement();
this.rfiles.put(file,rfiles.get(file));
//show the attachments received
private void showattach(Hashtable rfiles)
Enumeration filelist=rfiles.keys();
dsource=DragSource.getDefaultDragSource();
JButton b1=null;
while(filelist.hasMoreElements())
File file=(File)filelist.nextElement();
Icon icon=chooser.getIcon(file);
b1=new JButton(icon);
b1.setBackground(java.awt.Color.gray);
b1.setToolTipText(file.getName());
b1.addMouseListener(new AttachmentHandler());
Dimension d1=new Dimension(icon.getIconWidth(),icon.getIconHeight());
b1.setMaximumSize(d1);
hfiles.put(b1,file);
textpanel.setCaretPosition(doc.getLength());
textpanel.insertComponent(b1);
b1.setSize(icon.getIconWidth(),icon.getIconHeight());
dsource.createDefaultDragGestureRecognizer(b1, DnDConstants.ACTION_COPY_OR_MOVE,new DragGestureHandler());
cp.repaint();
private void savefile(File file,Object parent)
//ExtensionFileFilter filter = new ExtensionFileFilter(false);
//filter.addExtension("txt",true);
//chooser.setFileFilter(filter);
int returnVal = chooser.showSaveDialog(client);
if(returnVal ==JFileChooser.APPROVE_OPTION)
try{
FileOutputStream fstream=new FileOutputStream(chooser.getSelectedFile());
//decide whether the file received or sent is to be saved
if(((Container)parent).equals(textArea1))
fstream.write((byte[])files.get(file));
else
fstream.write((byte[])rfiles.get(file));
fstream.close();
System.out.println(file.getName());
catch(Exception e)
{System.out.println(e.toString()); }
private void openfile(File file,Object parent)
File tempfile=null;
try{
String fname=file.getName();
tempfile=File.createTempFile("temp",fname.substring(fname.lastIndexOf(".")));
FileOutputStream fstream=new FileOutputStream(tempfile);
System.out.println(tempfile.getAbsolutePath());
//decide whether the file received or sent is to be saved
if(((Container)parent).equals(textArea1))
fstream.write((byte[])files.get(file));
else
fstream.write((byte[])rfiles.get(file));
fstream.close();
catch(Exception e){System.out.println(e.toString());}
try{
Process p1=r1.exec("cmd /c start " + tempfile.getAbsolutePath());
p1.waitFor();
catch(Exception e){System.out.println(e.toString());}
//inner classes
class ComponentHandler implements ContainerListener{
public void componentRemoved(ContainerEvent ev)
Container cont=(Container)ev.getChild();
if(cont.getComponentCount()>0)
JButton but=(JButton)cont.getComponent(0);
files.remove((File)hfiles.get(but));
hfiles.remove(but);
public void componentAdded(ContainerEvent ev){}
class AttachmentHandler extends MouseAdapter{
public void mouseClicked(MouseEvent ev){
if(ev.getModifiers()==4)
Component comp=(Component)ev.getSource();
File file=(File)hfiles.get(comp);
popup=new JPopupMenu();
JMenuItem popopen=new JMenuItem("Open");
JMenuItem popsave=new JMenuItem("Save As..");
popup.add(popopen);
System.out.println(comp.getParent().getParent().getClass().toString());
popopen.addActionListener(new ButtonHandler(file,comp.getParent().getParent()));
popup.add(popsave);
popsave.addActionListener(new ButtonHandler(file,comp.getParent().getParent()));
popup.show(comp,12,12);
class DragGestureHandler extends Vector implements DragGestureListener,DragSourceListener,Transferable{
final static int FILE = 0;
final static int STRING = 1;
final static int PLAIN = 2;
DataFlavor flavors[] = {DataFlavor.javaFileListFlavor,DataFlavor.stringFlavor,DataFlavor.plainTextFlavor};
public void dragDropEnd(DragSourceDropEvent ev){}
public void dragEnter(DragSourceDragEvent ev){}
public void dragExit(DragSourceEvent ev){}
public void dragOver(DragSourceDragEvent ev){}
public void dropActionChanged(DragSourceDragEvent ev){}
public void dragGestureRecognized(DragGestureEvent ev)
System.out.println("recognized");
File file=(File)hfiles.get(ev.getComponent());
addElement(file);
ev.startDrag(DragSource.DefaultCopyDrop,this,this);
/* Returns the array of flavors in which it can provide the data. */
public synchronized DataFlavor[] getTransferDataFlavors() {
return flavors;
/* Returns whether the requested flavor is supported by this object. */
public boolean isDataFlavorSupported(DataFlavor flavor) {
boolean b = false;
b |=flavor.equals(flavors[FILE]);
b |= flavor.equals(flavors[STRING]);
b |= flavor.equals(flavors[PLAIN]);
return (b);
public synchronized Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException,IOException
if(flavor.equals(flavors[FILE])){return this;}
else if (flavor.equals(flavors[PLAIN])) {
return new StringReader(((File)elementAt(0)).getAbsolutePath());
} else if (flavor.equals(flavors[STRING])) {
return((File)elementAt(0)).getAbsolutePath();
} else {
throw new UnsupportedFlavorException(flavor);
//inner class for draging in the files on java frame
class DragDropHandler implements DropTargetListener{
public void dragEnter(DropTargetDragEvent ev){
public void dragExit(DropTargetEvent ev){
public void dragOver(DropTargetDragEvent ev){
public void drop(DropTargetDropEvent ev){
Transferable tf1=ev.getTransferable();
DataFlavor fl[]=ev.getCurrentDataFlavors();
if(ev.isDataFlavorSupported(DataFlavor.javaFileListFlavor))
ev.acceptDrop (DnDConstants.ACTION_COPY_OR_MOVE);
try{
java.util.List fileList = (java.util.List)tf1.getTransferData(DataFlavor.javaFileListFlavor);
Iterator iterator = fileList.iterator();
while (iterator.hasNext())
File file = (File)iterator.next();
if(file.isFile())
Icon icon=chooser.getIcon(file);
FileInputStream fstream=new FileInputStream(file);
int filedata=(new Double(file.length())).intValue();
byte bytes[]=new byte[filedata];
fstream.read(bytes);
files.put(file,bytes);
ev.getDropTargetContext().dropComplete(true);
addAttach(fileList);
catch(Exception e)
{System.out.println(e.toString() + "here");}
public void dropActionChanged(DropTargetDragEvent ev){
class MouseHandler extends MouseAdapter{
public void mouseClicked(MouseEvent me)
TreePath tp=tree.getPathForLocation(me.getX(),me.getY());
if(tp!=null)
if(tp.getPathCount()==3)
toalias=tp.getPathComponent(2).toString();
togroup=tp.getPathComponent(1).toString();
System.out.println(toalias);
if (!(toalias.equals(fromalias) && togroup.equals(fromgroup)))
System.out.println("hh " + toalias);
label4.setText(tp.getPathComponent(2).toString() + "_@" + tp.getPathComponent(1).toString());
class ButtonHandler implements ActionListener{
private File file;
private Object parent;
//constructors
public ButtonHandler()
public ButtonHandler(File file,Object parent)
this.file=file;
this.parent=parent;
//other functions
public void actionPerformed(ActionEvent ev){
String s=ev.getActionCommand();
System.out.println(s);
if(s.equals("Send with Audio..."))
//Audio audio=new Audio(client,false,"CAPTURE");
if(s.equals("Disconnect"))
try{
// server.disconnect(client);
client.getSound(3);
cp.remove(jsp);
label6.setVisible(false);
//UnicastRemoteObject.unexportObject(client,true);
button3.setText("Connect");
textArea2.append("\nYou have been disconnected to Server");
client.repaint();
catch(Exception e)
System.out.println(e.toString());
if(s.equals("Connect"))
// clp=new ClientProperties(client,false);
if(s.equals("Save As.."))
savefile(file,parent);
if(s.equals("Open"))
openfile(file,parent);
if(s.equals("Attach"))
//ExtensionFileFilter filter = new ExtensionFileFilter(false);
//filter.addExtension(".txt",true);
//filter.setDescription("Text Files(.txt)");
// chooser.setFileFilter(filter);
chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
//chooser.setMultiSelectionEnabled(true);
int returnVal = chooser.showOpenDialog(client);
if(returnVal ==JFileChooser.APPROVE_OPTION)
//File fp[]=chooser.getSelectedFiles();
File fp[]=new File[1];
fp[0]=chooser.getSelectedFile();
int i=0;
while(i<fp.length)
try{
File file=fp[0];
Icon icon=chooser.getIcon(file);
FileInputStream fstream=new FileInputStream(file);
int filedata=(new Double(file.length())).intValue();
byte bytes[]=new byte[filedata];
fstream.read(bytes);
files.put(file,bytes);
catch(Exception e){dialog.showMessageDialog(client,e.toString(),"Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
return; }
i++;
java.util.List fileList=Arrays.asList(fp);
addAttach(fileList);
if(s.equals("Send"))
try{
if(toalias==null)
dialog.showMessageDialog(client,"Select the Recepient First!!","Error:ChatApplication",JOptionPane.ERROR_MESSAGE);
return;
if(toalias!=null && togroup!=null && (!toalias.equals(fromalias)))
// server.sendMessage(textArea1.getText(),files,toalias,togroup,fromalias,fromgroup);
textArea1.setText("");
catch(Exception e)
e.printStackTrace();
}//if ends
class WindowEventHandler extends WindowAdapter{
public void windowClosing(WindowEvent ev){
try{
//server.disconnect(client);
client.getSound(3);
// UnicastRemoteObject.unexportObject(client,true);
catch(Exception e){System.out.println(e.toString());}
dispose();
private class onshutdown extends Thread{
public void run(){
try{
//server.disconnect(client);
//UnicastRemoteObject.unexportObject(client,true);
catch(Exception e){}
}//run ends
I hope this helps,
Denis -
Word wrapping incorrect inside JTextPane on MAC 0.5/10.4 and Linux OS
Hello java-dev team,
In my application, I am using JTextPane as a text editor to create RTF text. The problem I observed with the JTextPane on MAC OS and Linux OS flavors (I tested on Ubuntu 8.04) is: whenever I am changing any of the text property (font color, font name, font style like bold, italic or underline) and then enter the characters without providing space, the whole word gets wrapped to the next line from the point where exactly the property change starts i.e. the new formatted text is jumped to the next line from the starting point of formatting.
My requirement is, as I am not adding any space character while changing the property, the characters should be entered in the sequence and should come to new line as per normal word-wrap rule.
Can anybody help me out in this regards with some solution as its a very urgent requirement?
Below I am also providing the sample code to check the behavior. There is no dynamic facility to change the property in the below code but I am providing the text with multiple formatting settings through code itself. To reproduce the above issue, just type the characters using keyboard in between characters with changed text properties and you can see the whole word jumping to new line.
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
import javax.swing.text.StyledEditorKit;
public class TestWrapping {
JScrollPane scroll;
JTextPane edit;
public TestWrapping() throws Exception {
final JFrame frame=new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
edit=new JTextPane()
public void setSize(Dimension d)
if (d.width < getParent().getSize().width)
d.width = getParent().getSize().width;
super.setSize(d);
public boolean getScrollableTracksViewportWidth()
return false;
edit.setPreferredSize(new Dimension(150,150));
edit.setSize(150,150);
edit.setEditorKit(new StyledEditorKit());
scroll=new JScrollPane(edit);
edit.getDocument().insertString(0,"11111111111111222222222222222222222222222222222222222",null);
MutableAttributeSet attrs=new SimpleAttributeSet();
StyleConstants.setBold(attrs,true);
((StyledDocument)edit.getDocument()).setCharacterAttributes(30,5,attrs,false);
StyleConstants.setUnderline(attrs,true);
((StyledDocument)edit.getDocument()).setCharacterAttributes(35,5,attrs,false);
StyleConstants.setFontSize(attrs,25);
((StyledDocument)edit.getDocument()).setCharacterAttributes(40,5,attrs,false);
frame.getContentPane().add(scroll);
frame.setBounds(0,0,150,150);
frame.show();
public static void main(String[] args) throws Exception {
new TestWrapping();
}The same functionality works fine on Windows XP and problem is observed on MAC OS 10.4/10.5, Ubuntu 8.04. I am using jdk1.5 on both the platforms. I tested using jdk 6.0 on Ubuntu 8.04, and the problem is easily reproducible. I placed a query in the respective OS forums also but did not receive any replies. I also searched the suns bug database, but could not find any bug addressing the mentioned problem correctly. I also logged issue at bugs.sun.com and was assigned internal review ID of 1480019 for this problem.
If you need any additional information, please let me know.
Thanks in advance.
Regards,
VPKVLVPKVL wrote:
Hi All,
Just want to update that when I checked this issue with JDK1.6 on Ubuntu 8.04, I am unable to reproduce the issue. Everything works as expected. But problem continues on MAC 10.5. So can anybody help me out in coming out of this issue on MAC 10.5.
Thanks in advance.The only thing I can suggest is that you open a bug (radar) with apple ( developer.apple.com ), and then wait at least 12 months for Apple to get around to fixing it :s -
Copy and paste problem in JTextPane????
Hello,
Just I am tring copy and paste the following text in JTextPane (jdk1.3):
"that�s right" I got "that[]s right"
How to eleminate []???
-redlotusHello,
The problem has been solved by over writing the � font.properties � file in jre/lib/� .
The changes given as follows:
# Exclusion Range info.
# exclusion.dialog.0=0500-20ab,20ad-ffff
# exclusion.dialoginput.0=0500-20ab,20ad-ffff
# exclusion.serif.0=0500-20ab,20ad-ffff
# exclusion.sansserif.0=0500-20ab,20ad-ffff
# exclusion.monospaced.0=0500-20ab,20ad-ffff
That is, we comment the lines having Red foreground color. -
JTextPane and XMLParser and jdk .-) problems
Hi there.
I have a nice problem, which really gives me headaches.
I have an XML editor (working as an applet or as an aplication, using a JTextPane). All worked ok untill jdk1.3 and parts even until jdk1.4. Now 2 big problems appeared.
1.Under jdk1.4.1:
Spaces between lines are awful big. The actual characters are ok, but the cursor is almost twice as the characters. The distance from the bottom of a character and the bottom of the line is pretty big. Now that looked to me as a SpaceBelow or LineSpacing problem. I've tried to set up the SpaceBelow or/and LineSpacing... everything that I've thought it should work. No result. Seems like they have no effect when XMLParser comes in place and sets up the document content (at least i think this is the reason, also i'm not sure). An element tree implemented shows me that this attributes are set to the values I've intended, but no 'visual' effect. Does anyone know ANYTHING about this? Please!
2.Starting from jdk1.3. Doubling of tags.
If the XML editor reads something like <FT>something</FT> from a xml file, it sets in the JTextPane <FT><FT>something</FT></FT>. It's working under jdk1.2 but if I switch to 1.3 or 1.4does something like this. Any idea what's going on? Could it be an unfortunate mix between jdk and xalan libraries?
I REALLY hope that ANYONE of you knows ANYTHING about these!!!
THNX!Hi DrClap.
Well, this would be the best thing to do. The only problem is that those are long time gone. Not really 'gone', but they are not to be found.
There's something about first problem: At the end of starting process, after the parser finished his work, if I come and set the attributes (in the document of the JTextPane, using StyleConstants) with replace set to true, the display is ok but, of course, I loose any style defined in the xml file. That means is not a problem of the JTextPane in jdk 1.4 (at one time I thought it might be a 'mapping' problem of the JTP in 1.4) or?
Because I'm really stuck, I have all kind of strange ideas!!!
Could be "old libraries(for the parser) - new jdk" mixture problem, perhaps? (I've told you!)
THX for your previous response. -
Is caret positioning in right-to-left oriented jtextpane corruptable?
Dear all -
Below is a serious problem. I hope I can get help from you experts out there; otherwise, I think it is a bug that should be reported to the JDK developers.
I am writing an editor using my own keyboard layout to type in Arabic. To do so, I use jTextPane, and my own implementation of DocumentFilter (where I map English keys to Arabic letters). I start by i) setting the component orientation of jTextPane to be from RIGHT_TO_LEFT, and ii) attaching a caretListener to trace the caret's position.
The problem (I think it is a bug just like what is recorded here: http://bugs.adobe.com/jira/browse/SDK-16315):
Initially as I type text in Arabic, there is one-to-one correspondence between where I point my mouse and where the caret displays, basically, the same place. However, a problem occurs (and can always be re-produced) when I type a word towards the end of the line, follow it by a space character, and that space character causes the word to descend to the next line as a result of a wrap-around. Now, as I point my mouse to that first line again, the location where I click the mouse and the location where the caret flashes are no longer coincident! Also, the caret progression counter is reversed! That is, if there are 5 characters on Line 1, then whereas initially the caret starts from Position 0 on the right-hand side and increases as more text is added from right to left, it is now reversed where the the caret now increases from left to right for the first line, but correctly increases from right to left in the second line! yes funny stuff and very hard to describe to.
So, here is an example. I wrote the code below (JDK1.6_u10, on Netbeans 6.5 RC2) to make it easy to reproduce the problem. In the example, I have replaced the keys A, S, D, F and G with their Arabic corresponding letters alif, seen, daal, faa and jeem. Now, type these letters inside the double quotes (without the double quotes) including the two spaces please and watch out for the output: "asdfg asdfg ". Up until you type the last g and before you type space, all is perfect, and you should notice that the caret position correctly moves from 0 upwards in the printlines I provided. When you type that last space, the second word descends as a result of the wrap-around, and hell breaks loose! Notice that whereas the mouse and caret position are coincident on the second line, there is no way to fine-control the mouse position on the first line any more. Further, whereas adding text on the second line is intuitive (i.e., you can insert more text wherever you point your mouse, which is also where the caret would show up), for the first line, if you point the mouse any place over the written string, the caret displays in a different place, the any added text is added in the wrong place! All this because the caret counter is now reversed, which should never occur. Any ideas or fixes?
Thank you very much for reading.
Mohsen
package workshop.onframes;
import java.awt.ComponentOrientation;
import java.awt.Rectangle;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.text.BadLocationException;
public class NewJFrame1 extends javax.swing.JFrame {
public NewJFrame1() {
initComponents();
jTextPane1.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
CaretListener caretListener = new CaretListener() {
public void caretUpdate(CaretEvent e) {
int dot = e.getDot();
int mark = e.getMark();
if (dot == mark) {
try {
Rectangle cc = jTextPane1.modelToView(dot);
System.out.println("Caret text position: " + dot +
", view location (x, y): (" + cc.x + ", " + cc.y + ")");
} catch (BadLocationException ble) {
System.err.println("CTP: " + dot);
} else if (dot < mark) {
System.out.println("Selection from " + dot + " to " + mark);
} else {
System.out.println("Selection from " + mark + " to " + dot);
jTextPane1.addCaretListener(caretListener);
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane3 = new javax.swing.JScrollPane();
jTextPane1 = new javax.swing.JTextPane();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextPane1.setFont(new java.awt.Font("Tahoma", 0, 24)); // NOI18N
jTextPane1.setAutoscrolls(false);
jTextPane1.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyTyped(java.awt.event.KeyEvent evt) {
jTextPane1KeyTyped(evt);
jScrollPane3.setViewportView(jTextPane1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane3, javax.swing.GroupLayout.DEFAULT_SIZE, 159, Short.MAX_VALUE)
.addContainerGap())
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
pack();
}// </editor-fold>
private void jTextPane1KeyTyped(java.awt.event.KeyEvent evt) {
if (evt.getKeyChar() == 'a') {
evt.setKeyChar('\u0627');
} else if (evt.getKeyChar() == 's') {
evt.setKeyChar('\u0633');
} else if (evt.getKeyChar() == 'd') {
evt.setKeyChar('\u062f');
} else if (evt.getKeyChar() == 'f') {
evt.setKeyChar('\u0641');
} else if (evt.getKeyChar() == 'g') {
evt.setKeyChar('\u062c');
public
static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame1().setVisible(true);
// Variables declaration - do not modify
private javax.swing.JScrollPane jScrollPane3;
private javax.swing.JTextPane jTextPane1;
// End of variables declaration
}Hi Mohsen,
I looked at it and indeed, I see what you describe. Sorry, but I can't shed any light. I tried to figure out what software component, or combination of components, is the cause of the problem. I see several candidates:
1) The JTextPane
2) The Document
3) RTL support
4) BIDI support
5) Interpretation (by any other software component) of the left and right arrow key
6) The font
To clarify number 6: I know virtually nothing of Arabic language (apart from it being written from right to left). I remember however that the actual representation of a letter is dependent of its position between other letters: front, middle and end. What I see to my astonishment is that it seems that the rendering is also aware of this phenomenon. When you insert an A between the S and D of ASDFG, the shape of the S changes. Quite magic.
I tried to add a second textpane with the same Document, but a different size, to see what would happen with number one if one types text in number two and vice versa.
In my first attempt, the font that you set on textpane one was gone after I set its document to number two. For me that is very strange. The font was set to the textpane, not to the document. The separation betweem Model and View seems not very clear in this case. So I now also set that font on the second textpane.
I will post the changed code so that you may experiment some more and hopefully will find the problem.
You might be interested in a thread on java dot net forums that discusses a memory leak for RTL [http://forums.java.net/jive/message.jspa?messageID=300344#300344]
Piet
import java.awt.ComponentOrientation;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Rectangle;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.GroupLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.WindowConstants;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
public class NewJFrame1 extends JFrame {
private static final long serialVersionUID = 1L;
public NewJFrame1() {
initComponents();
// jTextPane1.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
this.applyComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
CaretListener caretListener = new CaretListener() {
public void caretUpdate(CaretEvent e) {
int dot = e.getDot();
int mark = e.getMark();
if (dot == mark) {
try {
Rectangle cc = jTextPane1.modelToView(dot);
System.out.println("Caret text position: " + dot
+ ", view location (x, y): (" + cc.x + ", "
+ cc.y + ")");
} catch (BadLocationException ble) {
System.err.println("CTP: " + dot);
} else if (dot < mark) {
System.out.println("Selection from " + dot + " to " + mark);
} else {
System.out.println("Selection from " + mark + " to " + dot);
jTextPane1.addCaretListener(caretListener);
private KeyAdapter toArabic = new KeyAdapter() {
public void keyTyped(KeyEvent evt) {
jTextPane1KeyTyped(evt);
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
// @SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane3 = new JScrollPane();
jTextPane1 = new JTextPane();
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
jTextPane1.setFont(new Font("Tahoma", 0, 24)); // NOI18N
jTextPane1.setAutoscrolls(false);
jTextPane1.addKeyListener(toArabic);
jScrollPane3.setViewportView(jTextPane1);
GroupLayout layout = new GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(layout.createParallelGroup(
GroupLayout.Alignment.LEADING).addGroup(
layout.createSequentialGroup().addContainerGap().addComponent(
jScrollPane3, GroupLayout.DEFAULT_SIZE, 159,
Short.MAX_VALUE).addContainerGap()));
layout.setVerticalGroup(layout.createParallelGroup(
GroupLayout.Alignment.LEADING).addGroup(
layout.createSequentialGroup().addContainerGap().addComponent(
jScrollPane3, GroupLayout.PREFERRED_SIZE, 85,
GroupLayout.PREFERRED_SIZE).addContainerGap(
GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)));
pack();
}// </editor-fold>
private void jTextPane1KeyTyped(KeyEvent evt) {
if (evt.getKeyChar() == 'a') {
evt.setKeyChar('\u0627');
} else if (evt.getKeyChar() == 's') {
evt.setKeyChar('\u0633');
} else if (evt.getKeyChar() == 'd') {
evt.setKeyChar('\u062f');
} else if (evt.getKeyChar() == 'f') {
evt.setKeyChar('\u0641');
} else if (evt.getKeyChar() == 'g') {
evt.setKeyChar('\u062c');
public static void main(String args[]) {
EventQueue.invokeLater(new Runnable() {
public void run() {
final NewJFrame1 frameOne = new NewJFrame1();
frameOne.setLocationRelativeTo(null);
frameOne.setVisible(true);
EventQueue.invokeLater(new Runnable() {
public void run() {
Document doc = frameOne.jTextPane1.getDocument();
JTextPane textPane2 = new JTextPane();
textPane2.setFont(new Font("Tahoma", 0, 24)); // NOI18N
textPane2.setAutoscrolls(false);
textPane2.setDocument(doc);
textPane2.addKeyListener(frameOne.toArabic);
JFrame frameTwo = new JFrame();
frameTwo.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frameTwo.add(new JScrollPane(textPane2));
frameTwo.setSize(400, 300);
frameTwo.setLocationByPlatform(true);
frameTwo.setVisible(true);
frameTwo
.applyComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
// Variables declaration - do not modify
private JScrollPane jScrollPane3;
private JTextPane jTextPane1;
// End of variables declaration
} -
p tags with attributes not removed from JTextPane
We are using HTMLEditorKit with JtextPane to create a HTML Document Editor, for our project. [JDK 1.3.1.]
When we have a simple <p> tag for paragraph in HTML and we start deleting things from end of the document, it works fine. But when we have a <P> tag with attributes like <p align='CENTER'> the delete key deletes the characters but the cursor remains in the line below and doesnot move up as the characters of above para get deleted. The HTML also retains the <p align='CENTER'> tag, which should have been removed. It seems its not able to identify <p> tags with attributes as Html para tags, and so not deleting it.
How do we solve this without migrating to jdk1.4 ? Please help.Usually attributes such as 'align=center' are deleted along with a tag, regardless of whether it is a p tag or another one. But you would have to carefully test what exactly gets deleted because attributes are not only stored with paragraphs. They can exist for single characters and as well come from a style sheet.
The best is to generate a dump of your document before and after deletion.
You can use something like the below code (it is not optimized at all and thus could be implemented better but it works) to produce a dump
public void listElements(Element elem, int indent) {
int i;
String is = getIndent(indent);
String elemName = elem.getName();
Document elemDoc = elem.getDocument();
String cont = "";
String theText = "";
System.out.println(is + "--start-----");
System.out.println(is + "Element Name:" + elemName);
if(elemName.equals(new String("content"))) {
try {
theText = elemDoc.getText(
elem.getStartOffset(),
elem.getEndOffset() - elem.getStartOffset());
System.out.println(is + "Content: " + theText);
if(theText.indexOf("\r") > -1) {
System.out.println(is + " plus \\r");
if(theText.indexOf("\n") > -1) {
System.out.println(is + " plus \\n");
catch (Exception e) {
listAttributes(elem, indent);
if(!elem.isLeaf()) {
for(i=0;i<elem.getElementCount();i++) {
listElements(elem.getElement(i),indent+2);
System.out.println(is + "---end----");
public void listAttributes(Element elem, int indent) {
Object key;
String attr;
String attrName;
int pos;
String is = getIndent(indent);
AttributeSet as = elem.getAttributes();
Enumeration an = as.getAttributeNames();
try {
while(an.hasMoreElements()) {
key = an.nextElement();
attrName = key.toString();
attr = as.getAttribute(key).toString();
System.out.println(is + "Attribute Name: " +
attrName + " Attribute Content: " + attr);
if(attr.indexOf("\r") > -1) {
System.out.println(is + " plus \\r");
if(attr.indexOf("\n") > -1) {
System.out.println(is + " plus \\n");
catch (Exception e) {
e.printStackTrace();
}Hope that helps
Ulrich -
Hi, I have read the post about the JTextPane wrapping and it works fine. However, when I load a file that has a lot of characters (29,000+)
and I want to display them on one line, it wraps the characters in a paragraph of lines and creates big blank spaces at its sides(I can still scroll, there's just nothing written). I am wondering if there is a setting that would force a single line to be continued endlessly with a horizontal ScrollBar.
Thanks.I'm running JDK1.3 on windows 98. The requestFocus() method does not work unless it is executed after the JFrame is shown. Maybe this is your problem. The following sample program will help illustrate this.
1) run the program as is. Focus should be on the text area as you select a tab.
2) Comment out the 'newTab' methods in the main method. Uncomment the 'newTab' methods in the constructor. This time focus will remain on the tab as you select it.
Hope this helps.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
public class TestTabbedPane extends JFrame
JTabbedPane tabbedPane;
public TestTabbedPane()
tabbedPane = new JTabbedPane();
tabbedPane.setPreferredSize( new Dimension(300, 200) );
getContentPane().add(tabbedPane);
// newTab( "one" );
// newTab( "two" );
// newTab( "three" );
private void newTab(String text)
JTextArea textArea = new JTextArea( text );
JScrollPane scrollPane = new JScrollPane( textArea );
tabbedPane.addTab( text, scrollPane );
tabbedPane.setSelectedIndex( tabbedPane.getTabCount() - 1 );
textArea.requestFocus();
public static void main(String args[])
TestTabbedPane frame = new TestTabbedPane();
frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
frame.pack();
frame.setVisible(true);
frame.newTab( "one" );
frame.newTab( "two" );
frame.newTab( "three" ); -
Printing HTML with Java Printing Service(JDK1.4 beta)
Hi there!
I'm currently checking out the new Java Printing Service (JPS) in the new JDK1.4 beta. This looks like a very promising printing API, with amongst others printer discovery and support for MIME types - but I have some problems with printing HTML displayed in a JEditorPane.
I'm developing an application that should let the user edit a (HTML)document displayed in a JEditorPane and the print this document to a printer. I have understood that this should be peace-of-cake using the JPS which has pre-defined HTML DocFlavor amongst others, in fact here is what Eric Armstrong says on Javaworld (http://www.javaworld.com/javaone01/j1-01-coolapis.html):
"With JPS, data formats are specified using MIME types, for example: image/jpeg, text/plain, and text/html. Even better, the API includes a formatting engine that understands HTML, and an engine that, given a document that implements the Printable or Pageable interface, generates PostScript. The HTML formatting engine looks particularly valuable given the prevalence of XML data storage. You only need to set up an XSLT (eXtensible Stylesheet Language Transformation) stylesheet, use it to convert the XML data to HTML, and send the result to the printer."
After one week of reasearch I have not been able to do what Armstrong describes; print a String that contains text of MIME type text/html.
I have checked the supported MIMI types of the Print Service returned by PrintServiceLookup.lookupDefaultPrintService(). This is the result:
DocFlavor flavor = DocFlavor.INPUT_STREAM.GIF;
PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
aset.add(MediaSizeName.ISO_A4);
aset.add(new Copies(2));
PrintService[] service = PrintServiceLookup.lookupPrintServices(flavor,aset);
if (service.length > 0) {
System.out.println("Selected printer " + service[0].getName());
DocFlavor[] flavors = service[0].getSupportedDocFlavors();
for (int i = 0;i<flavors.length;i++) {
System.out.println("Flavor "+i+": "+flavors.toString());
Selected printer \\MUNIN-SERVER\HP LaserJet 2100 Series PCL 6
Flavor 0: image/gif; class="[B"
Flavor 1: image/gif; class="java.io.InputStream"
Flavor 2: image/gif; class="java.net.URL"
Flavor 3: image/jpeg; class="[B"
Flavor 4: image/jpeg; class="java.io.InputStream"
Flavor 5: image/jpeg; class="java.net.URL"
Flavor 6: image/png; class="[B"
Flavor 7: image/png; class="java.io.InputStream"
Flavor 8: image/png; class="java.net.URL"
Flavor 9: application/x-java-jvm-local-objectref; class="java.awt.print.Pageable"
Flavor 10: application/x-java-jvm-local-objectref; class="java.awt.print.Printable"
As you can see there is no support for text/html here.
If anyone has a clue to what I'm missing here or any other (elegant, simple) way to print the contents of a JEditorPane, please speak up!
Reply to: [email protected] or [email protected] or here in this forumSince you have 'printable' as one of your flavors, try this using a JTextPane (assuming you can dump your HTML into a JTextPane, which shouldn't be a big problem)...
1. Have your JTextPane implement Printable
ie. something like this:
public class FormattedDocument extends JTextPane implements Printable 2. Read your HTML into the associated doc in the text pane.
3. Implement the printable interface, since you have it as one of your available flavors (I'd imagine everybody has printable in their available flavors). Something like this:
public int print(Graphics g, PageFormat pf, int pageIndex) {
Graphics2D g2 = (Graphics2D) g;
g2.translate((int)pf.getImageableX(), (int)pf.getImageableY());
g2.setClip(0, 0, (int)pf.getImageableWidth(), (int)pf.getImageableHeight());
if (pageIndex == 0)
setupPrintView(pf);
if (!pv.paintPage(g2, pageIndex))
return NO_SUCH_PAGE;
return PAGE_EXISTS;
}Here's my setupPrintView function, which is executed once on page 0 (which still needs some polishing in case I want to start from page 5). It sets up a 'print view' class based on the root view of the document. PrintView class follows...
public void setupPrintView(PageFormat pf) {
View root = this.getUI().getRootView(this);
pv = new PrintView(this.getStyledDocument().getDefaultRootElement(), root,
(int)pf.getImageableWidth(), (int)pf.getImageableHeight());Note of obvious: 'pv' is of type PrintView.
Here's my PrintView class that paints your text pane line by line, a page at a time, until there is no more.
class PrintView extends BoxView
public PrintView(Element elem, View root, int w, int h) {
super(elem, Y_AXIS);
setParent(root);
setSize(w, h);
layout(w, h);
public boolean paintPage(Graphics2D g2, int pageIndex) {
int viewIndex = getTopOfViewIndex(pageIndex);
if (viewIndex == -1) return false;
int maxY = getHeight();
Rectangle rc = new Rectangle();
int fillCounter = 0;
int Ytotal = 0;
for (int k = viewIndex; k < getViewCount(); k++) {
rc.x = 0;
rc.y = Ytotal;
rc.width = getSpan(X_AXIS, k);
rc.height = getSpan(Y_AXIS, k);
if (Ytotal + getSpan(Y_AXIS, k) > maxY) break;
paintChild(g2, rc, k);
Ytotal += getSpan(Y_AXIS, k);
return true;
// find top of page for a given page number
private int getTopOfViewIndex(int pageNumber) {
int pageHeight = getHeight() * pageNumber;
for (int k = 0; k < getViewCount(); k++)
if (getOffset(Y_AXIS, k) >= pageHeight) return k;
return -1;
}That's my 2 cents. Any questions? -
Does JTextPane have document size restrictions?
I am running into a problem while using a JTextPane to display documents. I have written a simple test class as can be seen below. The largest file I can read in using jdk1.4_2 is 1.6MB. If I use jdk1.4_0, the size is reduced to 0.6MB. I have search in the problem database and could find nothing. Has anyone else seen similar issues? Any ideas for work arounds?
If I use a JTextArea, I have not had this problem only with the JTextPane. I do need to have the ability to display HTML, that is why I have stuck with the JTextPane.
import java.awt.*;
import java.io.*;
import javax.swing.*;
public class ReadTest extends JFrame {
JTextPane editor;
JScrollPane scrollPane;
public ReadTest() {
super("Test Editor");
editor = new JTextPane();
if(loadData()) {
createUI();
public void createUI() {
Container contentPane = getContentPane();
scrollPane = new JScrollPane( editor,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED );
scrollPane.setPreferredSize( new Dimension( 600, 800 ) );
scrollPane.getViewport().setScrollMode( JViewport.SIMPLE_SCROLL_MODE );
contentPane.add( scrollPane );
setSize( 625, 800 );
setLocation( 300, 200 );
show();
public boolean loadData() {
boolean result = true;
FileInputStream test = null;
try {
File outFile = new File("C:\\temp" + System.getProperty( "file.separator" ) + "test.out");
test = new FileInputStream(outFile);
catch(FileNotFoundException e){
result = false;
if( test != null ){
try{
editor.read(test, null);
catch(IOException e){
result = false;
return( result);
public static void main(String[] args) {
ReadTest myEditor = new ReadTest();
}Hi Joe,
It seems that your print drivers are limiting your options. Using a different print driver may help.
I've included a link to a post here that might help.
"Although I work for HP, I'm speaking for myself and not on behalf of HP"
"Say "Thanks" by clicking the Kudos Star in the post that helped you.
--Please mark the post that solves your problem as "Accepted Solution" -
Multiple JTextPane Interesting Implementation for serial numbers entries
Hi fellows,
I am trying to implement as simply as possible a multiple JtextPanes Entries that would
behave the same way as serial number entries in classic installshields.
Let there be 4 JTextfields :
txt1 txt2 txt3 txt4
So I would like to:
A\ get the focus on the next JTextField at the right of the current one every time
the user has enterer 4 letters/numbers in a JtextField
B\ to limit the number of characters that the user can enter in each JTextField
There are many possible ways to do this but i am trying to keep it simple and to find
the smartest way to implement it :o)
ThanX in advance for your propositions !I don't use JDK1.4 yet, but the JFormattedTextField might help you.
If you use JDK1.3, then I have created a simple TextGroup component that should help you:
http://www.discoverteenergy.com/files/TextGroup.java
Note: my service provider did some changes on Jan 15 and mentioned that there could be problems accessing the site for 24 hours because of Domain Name Caching. If you can't access the site I can email you the code if you want. -
Double click of JTextPane does not get through
Hi everybody,
I add a mouse listener to my JTextPane. This mouse listener just prints out the clickcount of the mouse event:
private class TitleMousListener extends MouseAdapter
* @see java.awt.event.MouseAdapter#mouseClicked(java.awt.event.MouseEvent)
public void mouseClicked(MouseEvent e)
logger.info("====== TitleMouseListener");
logger.info("is consumed: " + e.isConsumed() + ", click count: " + e.getClickCount() + ", right button: "
+ (e.getButton() != MouseEvent.BUTTON3));
}Somehow the e.getClickCount() is always 1, even if I doubleclick on the JTextPane.
How can I catch the double clicks of the JTextPane?
Best regards,
JethroHi,
I can't reproduce that behaviour. The e.getClickCount() is 1 AND 2.
I used the following code with jdk1.6:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MainDialog extends JDialog {
public static void main(String[] args) {
MainDialog dlg = new MainDialog();
dlg.setSize(400, 400);
dlg.setLocationRelativeTo(null);
dlg.setVisible(true);
JPanel panel1 = new JPanel();
BorderLayout borderLayout1 = new BorderLayout();
JPanel jPanel1 = new JPanel();
JScrollPane jScrollPane1 = new JScrollPane();
JTextField jTextField1 = new JTextField();
JTextPane jTextPane1 = new JTextPane();
TitleMousListener listener = new TitleMousListener();
public MainDialog() {
super(new Frame(), "MainDialog", false);
setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
panel1.setLayout(borderLayout1);
jTextField1.setText("jTextField1");
jTextPane1.setText("jTextPane1");
getContentPane().add(panel1);
panel1.add(jPanel1, java.awt.BorderLayout.NORTH);
jPanel1.add(jTextField1);
panel1.add(jScrollPane1, java.awt.BorderLayout.CENTER);
jScrollPane1.getViewport().add(jTextPane1);
jTextField1.addMouseListener(listener);
jTextPane1.addMouseListener(listener);
pack();
private class TitleMousListener extends MouseAdapter {
public void mouseClicked(MouseEvent e) {
System.out.println("TitleMouseListener");
System.out.println("is consumed: " + e.isConsumed() + ", click count: " + e.getClickCount() + ", right button: "
+ (e.getButton() != MouseEvent.BUTTON3));
}Does that work for you?
- Michael
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