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How to indent text in JTextPane ... ?  RSS feed

Ghazanfar Qureshi
Posts: 20
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i m getting some problem using JTextPane when i set the left indent property using StyleConstants.setLeftIndent() function ( in initStylesForTextPane() fuction this is my function not java pl pay attention here as i printed the LeftIndent which is just what i set above but it is not indenting..? ) it is not doing indention but performing all othe task i included the code below

import javax.swing.*;
import java.awt.*;
import java.util.*;
import java.awt.event.*;
import javax.swing.text.*;
public class UsingPane extends JFrame {
private JTextPane txtPane;
private JTextField txtField;
private JButton btnSend;
private Container thisFrame;
private JPanel pnlArea;
private JPanel pnlInput;

private JScrollPane jsp;
private Style caption,text;
private Document doc;

private String strUserID;
private Insets withPadding;
UsingPane (){
//super (c,false);
super ("new window");

strUserID = "me";
setSize (350,300);

private void createUI(){
BorderLayout layout = new BorderLayout();
txtPane = new JTextPane();
txtField = new JTextField();

btnSend =new JButton("Send");
pnlArea = new JPanel (new BorderLayout());
pnlInput = new JPanel (new BorderLayout());

jsp = new JScrollPane(txtPane);
jsp.setVerticalScrollBarPolicy (JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);

thisFrame = getContentPane();
thisFrame.setLayout (layout);

pnlArea.add ( jsp , BorderLayout.CENTER);
pnlInput.add (txtField , BorderLayout.CENTER);
pnlInput.add (btnSend , BorderLayout.EAST);

thisFrame.add ( pnlArea , BorderLayout.CENTER);
thisFrame.add ( pnlInput, BorderLayout.SOUTH);

btnSend.addActionListener(new ActionListener () {
public void actionPerformed (ActionEvent evt) {

appendChatArea(getUserID() + " says" + "\n" , "caption");
appendChatArea(getChatFieldText() + "\n" , "text");

doc = txtPane.getDocument();
txtPane.setBorder(BorderFactory.createEmptyBorder(0,5,5 ,0));
withPadding = new Insets (1,1,1,1);

public String getUserID(){
return strUserID;
public void appendChatArea(String s ,String stname){
try {
doc.insertString(doc.getLength(), s, txtPane.getStyle(stname));
} catch (BadLocationException ble) {
System.err.println("Couldn't insert initial text.");
public void clearTextField(){

public String getChatFieldText (){
return txtField.getText();

public void enablePadding(){
// txtChatPane.setMargin(withPadding);
public void disablePadding() {

public static void main (String [ ] args) {
new UsingPane();
private void initStylesForTextPane() {

Style def = StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);
Style regular = txtPane.addStyle("regular", def);
StyleConstants.setFontFamily(def, "SansSerif");

Style s = txtPane.addStyle ("caption", regular);
StyleConstants.setBold (s,true);
StyleConstants.setFontSize(s , 15);
StyleConstants.setLeftIndent (s,2.0f);
s = txtPane.addStyle ("text", regular);
StyleConstants.setFontSize(s , 13);
StyleConstants.setItalic (s,true);

StyleConstants.setLeftIndent (s,20.0f);
StyleConstants.setStrikeThrough (s, true);

System.out.println("style indent of text is " + StyleConstants.getLeftIndent(s)) ;
Ghazanfar Qureshi
Posts: 20
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i need the answer urgently pl...
Cindy Glass
"The Hood"
Posts: 8521
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Well I see a couple of problems. The first one is that your Style is local to the initStylesForTextPane() method. Once that is done - poof - the style is gone. Make it an instance variable and it will last a bit longer.
Next, you define Style s and set some attributes for it, and then in the next breath you clobber those attributes with DIFFERENT attributes. Why??
Also, your question is VERY difficult to read. Please use proper punctuation. Most languages support periods.
It is sorta covered in the JavaRanch Style Guide.
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