NEED HELP

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;

import javax.swing.*;

import java.awt.*;
import java.awt.event.*;


public class FinalGUI implements ActionListener
{
    JFrame slideShow;
    JButton foward, backwards;
    JPanel contentPane;
    JTextArea slideNumber;
    JLabel userPicture;
    String path = "C:\\Documents and Settings\\James\\My Documents\\Dropbox\\Eclipse\\Final\\pics";
    File folder;
    File[] listOfFiles;
    ImageIcon[] icons;
    int picNum=0;




    public FinalGUI()
    {

        slideShow = new JFrame("Slide Show");
        slideShow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        contentPane = new JPanel();
        contentPane.setLayout(new GridLayout (3, 0, 0, 0));

        JButton forword=new JButton("Forword");
        forword.setActionCommand("forword");
        forword.addActionListener(this);
        contentPane.add(forword);

        folder = new File(path);
        listOfFiles = folder.listFiles();

        icons = new ImageIcon[listOfFiles.length];

        for(int i=0; i<listOfFiles.length;i++)
        {
                icons[i]=new ImageIcon(listOfFiles[i].getName());
                System.out.println("yes");
        }

        JLabel userPicture = new JLabel(icons[0]);
        contentPane.add(userPicture);

        JButton backwards = new JButton("Back");
        backwards.setActionCommand("back");
        backwards.addActionListener(this);
        backwards.setEnabled(false);
        contentPane.add(backwards);



        slideShow.setContentPane(contentPane);

        slideShow.pack();
        slideShow.setVisible(true);
    }

    public void actionPerformed(ActionEvent event)
    {

        String eventName = event.getActionCommand();
        System.out.println(icons[1].toString());

        if (eventName.equals("forword"))
        {
            picNum++;
            userPicture.setIcon(icons[picNum]);
        }

        if(eventName.equals("back"))
        {
            picNum--;
            userPicture.setIcon(icons[picNum]);
        }

        if(picNum>=1)
            backwards.setEnabled(true);
    }
    private static void runGUI()
    {
        JFrame.setDefaultLookAndFeelDecorated(true);

        FinalGUI greeting = new FinalGUI();
    }

    public static void main(String [] args)
    {
        javax.swing.SwingUtilities.invokeLater(new Runnable(){
            public void run(){
                runGUI();
            }
        });
    }

}