mport java.applet.*;
 import java.awt.*;

  class operacie extends Applet{

     Choice c=new Choice();
      private TextField a=new TextField(3);
      private TextField b=new TextField(3);
      private TextField v=new TextField(5);
      private String s[]={"sucet","rozdiel","sucin","podiel"};

    public void init(){
            add(new Label("a =")); add(a);
            add(new Label("b =")); add(b);
            for(int i=0; i<s.length; i++) c.addItem(s[i]);
            add(c);
            add(v);
     }
     public boolean action(Event evt, Object arg){
        if(evt.target instanceof Choice){
           double x=Double.valueOf(a.getText()).doubleValue();
           double y=Double.valueOf(b.getText()).doubleValue();
           if(arg.equals("sucet"))
              v.setText(String.valueOf(x+y));
           if(arg.equals("rozdiel"))
              v.setText(String.valueOf(x-y));
           if(arg.equals("sucin"))
              v.setText(String.valueOf(x*y));
           if(arg.equals("podiel"))
              v.setText(String.valueOf(x/y));
           return true;
        }
        return false;
     }
 }