import xml.parser.*;

     matchTag(JEditTextArea textArea)
    {
        String text = textArea.getText();
        TagParser.Tag tag = TagParser.getTagAtOffset(text,textArea.getCaretPosition());

        if (tag != null)
        {
            TagParser.Tag matchingTag = TagParser.getMatchingTag(text, tag);
            if (matchingTag != null)
            {

                if (tag.start < matchingTag.end)
                {
                    textArea.setSelection(new Selection.Range(
                        tag.start, matchingTag.end
                    ));
                    textArea.moveCaretPosition(matchingTag.end);
                }
                else
                {
                    textArea.setSelection(new Selection.Range(
                        matchingTag.start,tag.end));
                    textArea.moveCaretPosition(matchingTag.start);
                }
            }
            else
                textArea.getToolkit().beep();
        }
    }

matchTag(textArea);

/*
     matchTag(JEditTextArea textArea)
    {
        String text = textArea.getText();
        TagParser.Tag tag = TagParser.getTagAtOffset(text,textArea.getCaretPosition());
        if (tag != null)
        {
            TagParser.Tag matchingTag = TagParser.getMatchingTag(text, tag);
            if (matchingTag != null)
            {
                textArea.setSelection(new Selection.Range(
                    matchingTag.start, matchingTag.end
                ));
                textArea.moveCaretPosition(matchingTag.end);
            }
            else
                textArea.getToolkit().beep();
        }
    }
    */