public class DivModPresenterObs extends Applet implements Observer{

   private DivModCalculator modelObject;
   private DivModListener listener;

   private Label title;
   private TextField dividend, divisor;
   private Label quotient,rest;

   public DivModPresenterObs(){
     modelObject = new DivModCalculator (this);
     listener = new DivModListener (modelObject, this);

     title = new Label ("Div Mod Calculator");
     dividend = new TextField ("0",5);
     divisor = new TextField ("0",5);
     quotient = new Label ("Kvotient:");
     rest = new Label ("Rest:") ;
    }

   public int getDividend(){
     String strResult = dividend.getText();
     return Integer.parseInt(strResult);
   }

   public int getDivisor(){
     String strResult = divisor.getText();
     return Integer.parseInt(strResult);
   }

   public void init() {
     dividend.addActionListener (listener);
     divisor.addActionListener (listener);

     setLayout(new GridLayout(6,1));

     add(title);
     add(divisor);  add(dividend); 
     add(quotient); add(rest); 

     resize (200,200);
   }

   public void update(Observable o, Object arg){
     // This view needs updating. Let us find out what happened in the model.
     IntPair divModObject = modelObject.getResult();
     quotient.setText("Kvotient: " + Integer.toString(divModObject.firstInt,10));
     rest.setText("Rest: " + Integer.toString(divModObject.secondInt,10));
   }

} // end DivModPresenterObs