Java stugglez

import java.awt.Component;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.Console;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;


public class WaterReaction extends JPanel{
    private JLabel erlenmeyerLabel = new JLabel();
    private JLabel poofLabel = new JLabel();
    private JButton poofButton = new JButton();
    private JLayeredPane lPane = new JLayeredPane();
    public ImageIcon poof = new ImageIcon();
    public WaterReaction(){

        poofButton.setContentAreaFilled(false);
        poofButton.setBorderPainted(false);
        poofButton.setFocusPainted(false);
        poof = new ImageIcon(getClass().getResource("resources/poof.gif"));
        erlenmeyerLabel.setIcon(new ImageIcon(getClass().getResource("resources/reactionWaterErlenmeyer.png")));
        lPane.setPreferredSize(new Dimension(
                                            (int)Toolkit.getDefaultToolkit().getScreenSize().getWidth()/3,
                                            (int)Toolkit.getDefaultToolkit().getScreenSize().getHeight()
                                            ));

        poofButton.setIcon(poof);
        lPane.add(erlenmeyerLabel, new Integer(0));
        lPane.add(poofButton, new Integer(1));
        lPane.setOpaque(true);
        this.add(lPane);

        erlenmeyerLabel.setBounds(80, 150,
                                (int)Toolkit.getDefaultToolkit().getScreenSize().getWidth()/3,
                                (int)(Toolkit.getDefaultToolkit().getScreenSize().getHeight()/1.5));
        poofButton.setBounds(15,180,
                            (int)Toolkit.getDefaultToolkit().getScreenSize().getWidth()/3,
                            (int)(Toolkit.getDefaultToolkit().getScreenSize().getHeight()/1.5));

        poofButton.addActionListener(new clickHandler());
    };

    public void flushGif(ImageIcon icon){
        icon.getImage().flush();
    }
    class clickHandler implements ActionListener{
        public void actionPerformed(ActionEvent e){
            poofButton.setSelected(false);
            flushGif(poof);
        }
    }
}