Menggambar teks di atas canvas pada JAVA (J2ME)

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class GambarTeks extends MIDlet
  implements CommandListener {
   
  private Display display;
  private TextCanvas canvas;
   
  private final Command cmdKeluar =
    new Command("Keluar", Command.EXIT, 1);
 
  public GambarTeks() {
    display = Display.getDisplay(this);
           
    canvas = new TextCanvas(this);
   
    canvas.addCommand(cmdKeluar);
    canvas.setCommandListener(this);   
  }
   
  public void startApp() {
    display.setCurrent(canvas);
  }
   
  public void pauseApp() {
  }
   
  public void destroyApp(boolean unconditional) {
  }
   
  public void commandAction(Command c, Displayable s) {
    if (c == cmdKeluar) {
      destroyApp(false);
      notifyDestroyed();
    }
  }
 
  class TextCanvas extends Canvas {
     
    private GambarTeks midlet;
           
    public TextCanvas(GambarTeks midlet) {
      this.midlet = midlet;
    }
     
    public void paint(Graphics g) {
      g.setColor(255, 255, 255);
      g.fillRect(0, 0, getWidth(), getHeight());
      g.setColor(255, 0, 0);
      Font font = Font.getFont(Font.FACE_PROPORTIONAL,
                    Font.STYLE_BOLD | Font.STYLE_UNDERLINED,
                    Font.SIZE_MEDIUM);
      g.setFont(font);
      g.drawString("Teks di dalam Canvas", 0, 0, g.LEFT | g.TOP);
    }          
  } 
}