Set Font to the JTextArea Problem

Hi all, i've got a problem in setting the font for my JTextArea.
Here is my piece of code.
Display.append(Message.getText());
Display.setFont(selected_font));
Display is JTextArea, Message is String.
The problem is i whenever i do this, everytime i change the Font of the Message, the whole messages in the Display font also change.
What i want is, when i change the font of certain message, that certain message font ( instead of all message) also change in the Display.
I know the problem is because of the Display.setFont(), it set the font for the whole content inside the Display. Any help to fulfill what i want?

I'm not sure a JTextArea is appropriate for what you're doing. As its API documentation begins by saying "A JTextArea is a multi-line area that displays plain text. "
You can set the font used by this component: but the point is that it uses a single font.
Perhaps you are looking for a JEditorPane (including JTextPane). Check out Sun's tutorial for code examples etc: http://java.sun.com/docs/books/tutorial/uiswing/components/text.html

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To know how to use these components, have a look at these tutorial trails:
[http://java.sun.com/docs/books/tutorial/uiswing/components/editorpane.html]
[http://java.sun.com/docs/books/tutorial/uiswing/components/generaltext.html]
[http://java.sun.com/docs/books/tutorial/uiswing/components/text.html]
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