import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class HoidlaProov extends JPanel implements ActionListener{
   JTextField tf=new JTextField();
   Hoidla h=new LoendavHoidla();
   JButton nuppLisa=new JButton("Lisa");
   JButton nuppKysi=new JButton("Küsi");
   JButton nuppEemalda=new JButton("Eemalda");
   public HoidlaProov(){
      setLayout(new BorderLayout());
	  Panel p=new Panel(new GridLayout(1, 4));
	  p.add(tf);
	  p.add(nuppLisa);
	  p.add(nuppKysi);
	  p.add(nuppEemalda);
	  add(p, BorderLayout.NORTH);
	  nuppLisa.addActionListener(this);
	  nuppKysi.addActionListener(this);
	  nuppEemalda.addActionListener(this);
   }
   public void actionPerformed(ActionEvent e){
      if(e.getSource()==nuppLisa){h.lisa(Integer.parseInt(tf.getText()));}
	  if(e.getSource()==nuppKysi){tf.setText(String.valueOf(h.kysiKogus()));}
      if(e.getSource()==nuppEemalda){h.eemalda(Integer.parseInt(tf.getText()));}
   }
   public static void main(String[] arg){
     JFrame f=new JFrame();
	 f.setSize(400, 200);
	 f.getContentPane().add(new HoidlaProov());
	 f.setVisible(true);
   }
}