Alignment for centering text in JTextPane does not work

[Constanze Michaelis]

Hi @ll.

I tried to use JTextPane to center a text which should be displayed to users for information.

JTextPane text = new JTextPane();
SimpleAttributeSet aSet = new SimpleAttributeSet(); 

StyleConstants.setForeground(aSet, hellblau);
StyleConstants.setBackground(aSet,back);
StyleConstants.setAlignment(aSet,StyleConstants.ALIGN_CENTER);

text.setCharacterAttributes(aSet,true); 
text.setBackground(back); 
        text.setEditable(false); 
        text.setText(a);  
 

What did I do wrong?

bye
Constanze

[Craig Wood]

You add the styles to the document of the JTextPane. There is a page in the java tutorial that has an example (application) of adding styles to a styled document: How to Use Editor Panes and Text Panes.

[Constanze Michaelis]

You add the styles to the document of the JTextPane. There is a page in the java tutorial that has an example (application) of adding styles to a styled document: How to Use Editor Panes and Text Panes.

I tried this way before, but it hasn'nt been working, too.

bye
Constanze

[Craig Wood]

import java.awt.*;
import javax.swing.*;
import javax.swing.text.*;
 
public class Styling
{
    public Styling()
    {
        String text = "To refer to locations within the sequence, the " +
                      "coordinates used are the location between two " +
                      "characters.\nAs the diagram below shows, a location " +
                      "in a text document can be referred to as a position, " +
                      "or an offset. This position is zero-based.";
 
        SimpleAttributeSet aSet = new SimpleAttributeSet(); 
        StyleConstants.setForeground(aSet, Color.blue);
        StyleConstants.setBackground(aSet, Color.orange);
        StyleConstants.setFontFamily(aSet, "lucida bright italic");
        StyleConstants.setFontSize(aSet, 18);
 
        SimpleAttributeSet bSet = new SimpleAttributeSet();
        StyleConstants.setAlignment(bSet, StyleConstants.ALIGN_CENTER);
        StyleConstants.setUnderline(bSet, true);
        StyleConstants.setFontFamily(bSet, "lucida typewriter bold");
        StyleConstants.setFontSize(bSet, 24);
 
        JTextPane textPane = new JTextPane();
        textPane.setText(text);
        StyledDocument doc = textPane.getStyledDocument();
        doc.setCharacterAttributes(105, doc.getLength()-105, aSet, false);
        doc.setParagraphAttributes(0, 104, bSet, false);
 
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(new JScrollPane(textPane));
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
    }
 
    public static void main(String[] args)
    {
        new Styling();
    }
}