Center text in a JTextArea

Question

How can i get center the JTextArea text?

Answer 1

Here's some code I found on the forum for a JTextPane:
import javax.swing.*;
import javax.swing.text.*;
import java.awt.*;
public class TextPaneCenter
    JTextPane edit = new JTextPane();
    public TextPaneCenter()
         JFrame frame=new JFrame();
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.getContentPane().add(new JScrollPane(edit));
        try
             edit.setEditorKit(new MyEditorKit());
             SimpleAttributeSet attrs=new SimpleAttributeSet();
             StyleConstants.setAlignment(attrs,StyleConstants.ALIGN_CENTER);
             StyledDocument doc=(StyledDocument)edit.getDocument();
             doc.insertString(0,"111\n2222222\n33333333333333",attrs);
             doc.setParagraphAttributes(0,doc.getLength()-1,attrs,false);
         catch (Exception ex)
             ex.printStackTrace();
         frame.setSize(300,300);
         frame.setLocationRelativeTo(null);
         frame.show();
    public static void main(String[] args) throws Exception
         new TextPaneCenter();
    class MyEditorKit extends StyledEditorKit
         public ViewFactory getViewFactory()
              return new StyledViewFactory();
        static class StyledViewFactory implements ViewFactory
             public View create(Element elem)
                  String kind = elem.getName();
                  if (kind != null)
                       if (kind.equals(AbstractDocument.ContentElementName))
                            return new LabelView(elem);
                       else if (kind.equals(AbstractDocument.ParagraphElementName))
                            return new ParagraphView(elem);
                       else if (kind.equals(AbstractDocument.SectionElementName))
                            return new CenteredBoxView(elem, View.Y_AXIS);
                       else if (kind.equals(StyleConstants.ComponentElementName))
                            return new ComponentView(elem);
                       else if (kind.equals(StyleConstants.IconElementName))
                            return new IconView(elem);
             // default to text display
             return new LabelView(elem);
        } // class StyledViewFactory
      } // class MyEditorKit
    class CenteredBoxView extends BoxView
         public CenteredBoxView(Element elem, int axis)
              super(elem,axis);
         protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans)
              super.layoutMajorAxis(targetSpan,axis,offsets,spans);
              int textBlockHeight = 0;
              int offset = 0;
              for (int i = 0; i < spans.length; i++)
                   textBlockHeight += spans[ i ];
              offset = (targetSpan - textBlockHeight) / 2;
//              offset = (targetSpan - textBlockHeight);
              for (int i = 0; i < offsets.length; i++)
                   offsets[ i ] += offset;
     }