//Koostanud Renee Pajuste
import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;

public class liitmine extends Applet implements ActionListener{
  TextField arv1=new TextField(5),
            arv2=new TextField(5),
            vastus=new TextField(5);
  Label pluss=new Label("+", Label.CENTER);
  Button vordub=new Button("=");
  Button Clear=new Button("Clear");
    
  public void init(){
  
    setLayout(new GridLayout(1, 6));
    add(arv1);
    arv1.setFont(new Font("Courier", Font.PLAIN, 25));
    add(pluss);
    add(arv2);
    arv2.setFont(new Font("Courier", Font.PLAIN, 25));
    add(vordub);
    add(vastus);
    vastus.setFont(new Font("Courier", Font.PLAIN, 20));
    add(Clear);
    vordub.addActionListener(this);
    Clear.addActionListener(this);
  }
    
    public void actionPerformed(ActionEvent e){
     if(e.getSource()==vordub){
      vastus.setText(numbriks(arv1)+numbriks(arv2)+"");
     }else {
       vastus.setText("");
       arv2.setText("");
       arv1.setText("");
     }
    }
   /* int nr1=Integer.parseInt(arv1.getText().trim());
    int nr2=Integer.parseInt(arv2.getText().trim());
    
 */
  int numbriks(TextField tf){
    return Integer.parseInt(tf.getText().trim());
  }
}