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(); // Makes text 24pts Style style = textPane.addStyle("24pts", null); StyleConstants.setFontSize(style, 24); } }