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

public class FensterProg
	implements ActionListener
{
	public static final String ACTION_START = "action/start";
	public static final String ACTION_STOP = "action/stop";
	public FensterProg()
	{
		JFrame f = new JFrame("Das Fenster");
		JButton b1 = new JButton ("Knopf 1");
		JButton b2 = new JButton ("Knopf 2");
		b1.setActionCommand(ACTION_START);
		b2.setActionCommand(ACTION_STOP);
		b1.addActionListener(this);
		b2.addActionListener(this);
		f.getContentPane().add(b1, BorderLayout.EAST);
		f.getContentPane().add(b2, BorderLayout.WEST);
		f.pack();
		f.setVisible(true);
	}
	public void actionPerformed(ActionEvent ae)
	{
		if (ae.getActionCommand().equals(ACTION_START))
		    System.out.println("Action START!");
		else if (ae.getActionCommand().equals(ACTION_STOP))
		    System.out.println("Action STOP!");
		else
		    System.out.println("Action what !?");
	}
	public static void main(String[] x)
	{
		new FensterProg();
	}
}