Applet being a bit uncorporative

Question

the program compiles fine but then when i try and run it comes out with this error message and says the applet has failed, any help would me much appreciated
deps-jar:
Compiling 1 source file to C:\Documents and Settings\Darren\My Documents\NetBeansProjects\ClientServer\build\classes
compile-single:
java.lang.NullPointerException
at java.awt.Container.addImpl(Container.java:1027)
at java.awt.Container.add(Container.java:903)
at Client.init(Client.java:55)
at sun.applet.AppletPanel.run(AppletPanel.java:425)
at java.lang.Thread.run(Thread.java:619)
debug-applet:
BUILD SUCCESSFUL (total time: 5 seconds)
import java.io.*;
import java.net.*;
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;
public  class  Client  extends  Applet  implements ActionListener, Runnable
        Thread programThread;
        TextField  output;
        Button confirmation;
     Label description,description2;
        Checkbox eggFriedRice,chowMein,chopSuey,vermicelli;
        Checkbox pork, chicken,vegetable,prawn,fish;
        CheckboxGroup radioGroup;
        DecimalFormat pounds = new DecimalFormat ("�###,##0.00");
     public  void  init() {
        setLayout(new BorderLayout());    
        radioGroup = new CheckboxGroup();
        description  =  new Label("Please choose one main dish");
        eggFriedRice= new Checkbox("Egg Fried Rice",radioGroup,true);
        chowMein= new Checkbox("chow Mein",radioGroup,false);
        chopSuey = new Checkbox("Chop Suey",radioGroup,false);
        vermicelli = new Checkbox("Vermicelli",radioGroup,false);
        description2 = new Label ("Please choose some ingredients");
        pork = new Checkbox("Pork",false);
        chicken = new Checkbox("Chicken",false);
        prawn = new Checkbox("Prawn",false);
        fish = new Checkbox("Fish",false);
        confirmation = new Button("Enter");
        output  =  new  TextField(70);
        add(description,"Center");
        add(eggFriedRice,"Center");
        add(chowMein,"Center");
        add(chopSuey,"Center");
        add(vermicelli,"Center");
        add(description2,"Center");
        add(pork,"Center");
        add(chicken,"Center");
        add(vegetable,"Center");
        add(prawn,"Center");   
        add(fish,"Center");  
        add(confirmation,"South");
        add(output,"South");
        programThread= new Thread(this);
        programThread.start();
        confirmation.addActionListener(this);
     public void run()
        String mainDish;  
          if (eggFriedRice.getState()) mainDish = "egg fried rice";   
          else if (chowMein.getState()) mainDish = "chow mein";
          else if (chopSuey.getState()) mainDish = "chop suey";
          else mainDish = "vermicelli"; 
          String ingredient1;
          if(pork.getState()) ingredient1 = "pork";
          else ingredient1 = "";
          String ingredient2;
          if (chicken.getState()) ingredient2 = "chicken";
          else ingredient2 = "";
          String ingredient3;
          if (vegetable.getState()) ingredient3 = "vegetables";
          else ingredient3 = "";
          String ingredient4;
          if (prawn.getState()) ingredient4 = "prawn";
          else ingredient4 = "";
          String ingredient5;
          if (fish.getState()) ingredient5 = "fish";
          else ingredient5 = "";
           boolean egg = eggFriedRice.getState();
           boolean chow = chowMein.getState();
           boolean chop = chopSuey.getState();
           boolean verm = vermicelli.getState();
           boolean pork1 = pork.getState();
           boolean chick = chicken.getState();
           boolean veg = vegetable.getState();
           boolean prawn1 = prawn.getState();
           boolean fish1 = fish.getState();
          try
               Socket  cts  =  new
               Socket(getCodeBase().getHost(),  6000);
            DataInputStream  isfs  =  new DataInputStream(cts.getInputStream());
            DataOutputStream  osts  =  new DataOutputStream(cts.getOutputStream());
               osts.writeBoolean(egg);
               osts.flush();
               osts.writeBoolean(chow);
               osts.flush();
               osts.writeBoolean(chop);
               osts.flush();
               osts.writeBoolean(verm);
               osts.flush();
               osts.writeBoolean(pork1);
               osts.flush();
               osts.writeBoolean(chick);
               osts.flush();
               osts.writeBoolean(veg);
               osts.flush();
               osts.writeBoolean(prawn1);
               osts.flush();
               osts.writeBoolean(fish1);
            osts.flush();
            double circf  = isfs.readDouble();
String message = "Your order of" + " " + mainDish+ " "+ "with"+ " "+ ingredient1+" "+ ingredient2+  " "+ ingredient3+" "+ ingredient4+" "+ ingredient5+" "+ "costs" + " "+(pounds.format(circf));
output.setText(message); 
} catch (IOException ex) {
System.out.println(ex);
     public  void  actionPerformed (ActionEvent  ev)  {
      if(ev.getSource()==confirmation) {          
      run();    
}

Answer 1

at Client.init(Client.java:55You add something on the line 55. That 'something' is null, i.e. it is not instantiated.