import java.awt.Color;
import javax.swing.JTextPane;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
public class Main {
public static void main(String[] argv) throws Exception {
JTextPane textPane = new JTextPane();
StyledDocument doc = textPane.getStyledDocument();
// Italicize the entire paragraph containing the position 12
doc.setParagraphAttributes(12, 1, textPane.getStyle("Italic"), true);
}
}