import java.awt.event.*;
import javax.swing.*;

public class SumaApplet extends JApplet
{
  private JLabel op1,op2,msg;
  private long i1,i2;
  private JTextField suma;
  public void init()
  {
    op1 = new JLabel("");
    op2 = new JLabel("");
    suma = new JTextField(6);
    msg = new JLabel("");
    JPanel panel = new JPanel();
    panel.add(op1);
    panel.add(op2);
    panel.add(suma);
    panel.add(msg);
    getContentPane().add(panel);
    suma.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent event)
         {
            int isuma=Integer.parseInt(suma.getText());
            if ( isuma == (i1+i2))
               msg.setText("Resultado Correcto");
            else 
               msg.setText("Resultado era " + (i1+i2));
         }
      });
  }
  public void start(){
    i1=Math.round(Math.random()*Integer.parseInt(getParameter("Rango")));
    i2=Math.round(Math.random()*Integer.parseInt(getParameter("Rango")));
    op1.setText("   "+ i1);
    op2.setText(" + "+ i2 + " =");
    suma.setText("");
    msg.setText("");
  }
}