import java.awt.Color;
import javax.swing.JTextPane;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
public class Main {
public static void main(String[] argv) throws Exception {
JTextPane textPane = new JTextPane();
Style style = textPane.addStyle(null, null);
StyleConstants.setForeground(style, Color.red);
textPane.setLogicalStyle(style);
Style logicalStyle = textPane.getLogicalStyle();
style = textPane.addStyle(null, null);
StyleConstants.setBold(style, true);
textPane.setParagraphAttributes(style, true);
textPane.setLogicalStyle(logicalStyle);
}
}