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


/**
 * <p>
 * Pisike programm, mis töötab appletina ja püüab leida
 * sisestatud arvu ristsumma
 */
public class rsumma extends Applet implements ActionListener{
TextField tf;
TextField rsumma;

    public void init(){
    	//getContentPane().setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));
	
	tf = new TextField(6);
	Button b = new Button("Ristsumma");
	b.addActionListener(this);
	rsumma = new TextField(6);
	rsumma.setEditable(false);
	
	add(tf);
	add(b);
	add(rsumma);
    }
    
    public void actionPerformed(ActionEvent e){
    	int nr=0, rsum=0;
    	StringBuffer s = new StringBuffer(tf.getText());
	for(int n=0; n<s.length() ;n++){
	    try{
	    	nr = Integer.parseInt("" + s.charAt(n));
	    }catch(Exception ex){}
	    rsum+=nr;
	}
	rsumma.setText(""+rsum);
    }
}