Weird character counting

I'm having a problem with this bit of code. This works perfecly fine if there are not line breaks (/n) in the TextPane. if there are line breaks the .indexOf method seems to ignore them but the TextPane doesn't so when the format is applied it is shifted to the right by as many characters as there are line breaks before it.
please help.
clarkie
       StyledDocument doc = mainTextArea.getStyledDocument();
        // create format for keywords.
        MutableAttributeSet keyWordFormat = new SimpleAttributeSet();
        StyleConstants.setForeground(keyWordFormat, Color.red);
        // create format for default text
        MutableAttributeSet defaultFormat = new SimpleAttributeSet();
        StyleConstants.setForeground(defaultFormat, Color.black);
        //String mainText = mainTextArea.getText();
        // reset the text to the default format
        doc.setCharacterAttributes(0,mainTextArea.getText().length(),defaultFormat,true);
        int x = 0;
        String keyWord = "<HTML>";
        // search through the string and highlight keywords.
        while ( mainTextArea.getText().indexOf(keyWord,x )!= -1 ) {
            doc.setCharacterAttributes(mainTextArea.getText().indexOf(keyWord,x),keyWord.length(),keyWordFormat,true);
            x = mainTextArea.getText().indexOf(keyWord, x)+1;
            System.out.println(x);
        }

In a Document only a single character is stored for each new line. When you you use the getText(...) method the new line String for the Document is inserted for each new line character. On a Windows platform this new line String is ("\r\n"). You can override the default by using:
document.putProperty( DefaultEditorKit.EndOfLineStringProperty, "\n" );
By the way your while loop is extremely inefficient. Each time through the loop you use the getText() method twice. You should just initialize a variable containing the text of the Document outside of your loop.

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Moderator message - Cross post locked
Edited by: Rob Burbank on Apr 17, 2009 10:46 AM

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Message was edited by: b.whitham

Weird character counting

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