Get biggest character in a text??(help!!!!!!!)

i have a textPane and its font is set to size 12...
i also have a function to change the size of the selected text in the textPane...
coding for changing size of selected text:
SimpleAttributeSet x = new SimpleAttributeSet();
StyleConstants.setFontSize(x, size);
StyleConstants.setFontFamily(x,type);
selectedComponent.jTextPane2.setCharacterAttributes(x, false);
selectedComponent.jTextPane2.setCharacterAttributes(x, false);
the problem is, when i try to use fontMetrics to get the maxAscent of the text, the maxAscent doesn't change...
coding for getting maxAscent:
FontMetrics fontMetrics = textpane.getFontMetrics(textpane.getFont());
int maxHeight=fontMetrics.getMaxAscent();
for example:
in the beginning, my text are in size 12... i change the last 3 characters (let just say a,b & c)to size 20... when i get the maxAscent of the text, it is 11... which is the maxAscent of the text in size 12... not the last 3 characters which are in size 20... what should i do???

Could you tell me what do you need?
I showed how to get max height of selected text.
if you need just max font size there is much simpler way
JTextPane pane=new JTextPane();
StyledDocument doc=(StyledDocument)pane.getDocument();
int fontSizeFromOffset=StyleConstants.getFontSize(doc.getCharacterElement(offset).getAttributes());
regards
Stas

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Excuse my bad english i am french speaking

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Author:   [email protected]
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Doc Notes: None
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Get biggest character in a text??(help!!!!!!!)

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