Null pointer exception in getCodeBase() method

[Ritesh Pareek]

hi all,

I am getting null pointer exception on getAppletContext(), getCodeBase(), getDocumentBase()

   public class Main extends Applet {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Main newMain = new Main();
        newMain.init();
    }

    @Override
    public void init() {
        super.init();
        System.err.println("here in init");

//        System.err.println("ac = " + getAppletContext());

 System.err.println("db = " + getCodeBase());
        URL db = getDocumentBase();

        System.err.println("db = " + db);

    }
} 

Stack trace is

run:
here in init
Exception in thread "main" java.lang.NullPointerException
at java.applet.Applet.getCodeBase(Applet.java:152)
at Main.init(Main.java:33)
at Main.main(Main.java:23)
Java Result: 1
BUILD SUCCESSFUL (total time: 2 seconds)

I am not getting solution.

Thanks a lot

[Ulf Dittmer]

What's the main method doing there? You're not trying to run this on the command line, are you? Because then it wouldn't be an applet, and all applet-specific functionality couldn't possibly work.

[Ritesh Pareek]

Hi Dittmer,

Thanks for reply, My silly mistake.

Thanks a lot