menu kommer ikke frem

Hej hvad gør jeg forkert min menu kommer ikke frem




import java.io.*;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import java.awt.*;
/** A class to control the GUI

*/

 
    public class SimGui {
  public SimGui() {
    try {
      jbInit();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

  //here some outputfile specs.
      static String file ;
      static FileWriter fw ;
      static BufferedWriter bw ;
      static PrintWriter outFile;
  static JMenuBar jMenuBar1 = new JMenuBar();
  static JMenu jMenu1 = new JMenu();

  public static void main(String[] args) throws IOException {
        file = "results.txt";
        fw = new FileWriter(file);
        bw = new BufferedWriter(fw);
        outFile = new PrintWriter(bw);
        SimulationFrame frame = new SimulationFrame("Lager simulation.", outFile);
                frame.display();
      }

  private void jbInit() throws Exception {
    jMenu1.setText("test");
    jMenuBar1.add(jMenu1);
  }

}