Output file.. IOException

[CSdude]

I created a class that takes a 3 dimensional array and puts it in a txt file, the method is called output(). I can't figure out where to call the method though. I'm trying to have it so it is called when numb=4 in the actionListener on the bottom.
Please Help! Leaving for Afghanistan in a few hours!

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

public class MuseumPanel extends JPanel
{
    private JLabel label;
    private JPanel buttonPanel;
    private JButton week, day, hour, output;
    private Museum museumArray = new Museum();
    private int numb;
    int[] weekArray = new int[3];
    int[] dayArray = new int[7];
    int[] hourArray = new int[4];


   public MuseumPanel() throws IOException
   {
       week = new JButton("Week");
       day = new JButton("Day");
       hour = new JButton("Hour");
       output = new JButton("Output");

       ButtonListener listener = new ButtonListener();
       week.addActionListener (listener);
       day.addActionListener (listener);
       hour.addActionListener (listener);
       output.addActionListener (listener);


       label = new JLabel ("Click to see the amount of visitors for each button.");

       buttonPanel = new JPanel();
       buttonPanel.setPreferredSize (new Dimension(650,40));
       buttonPanel.setBackground (Color.blue);
       buttonPanel.add (week);
       buttonPanel.add (day);
       buttonPanel.add (hour);
       buttonPanel.add (output);

       setPreferredSize (new Dimension(650,500));
       setBackground (Color.yellow);
       add (label);
       add (buttonPanel);
    }

        public void paintComponent (Graphics page)
        {
            super.paintComponent(page);

            if(numb==1)
                drawWeek(page);
            else if(numb==2)
                drawDay(page);
            else if(numb==3)
                drawHour(page);
             else if(numb==4)
                drawOutput(page);


        }

        public void drawOutput(Graphics page) throws IOException
        {   
            page.setFont(new Font("Arial", Font.BOLD,40));
            page.drawString("**Output File Created**",100,250);
        }

        public void drawWeek(Graphics page)
        {
            page.setColor(Color.blue);
            int top=93;
            int width = 93;

            for(int i=0; i<3; i++)
            {
                weekArray = museumArray.getWeeks();
                page.fillRect(top,450-weekArray[i], width, weekArray[i]);
                page.setColor(Color.red);
                page.drawString("" + weekArray[i], top+35, 450-weekArray[i]-5);
                page.setColor(Color.blue);
                page.drawString("Week " + (i+1), top+30, 470);
                top = top + (width + 93);
            }
        }

        public void drawDay(Graphics page)
        {
                String[] days = new String[]{"Sunday",
                    "Monday",
                    "Tuesday",
                    "Wednesday",
                    "Thursday",
                    "Friday",
                    "Saturday"};

            page.setColor(Color.blue);
            int top=43;
            int width=43;

            for(int i=0; i<7; i++)
            {
                dayArray = museumArray.getDays();
                page.fillRect(top,450-dayArray[i], width, dayArray[i]);
                page.setColor(Color.red);
                page.drawString("" + dayArray[i], top+10, 450-dayArray[i]-5);
                page.setColor(Color.blue);
                page.drawString(days[i], top, 470);
                top = top + (width + 43);
            }
        }

        public void drawHour(Graphics page)
        {
            page.setColor(Color.blue);
            int top=72;
            int width=72;

            for(int i=0; i<4; i++)
            {
                hourArray = museumArray.getHours();
                page.fillRect(top,450-hourArray[i], width, hourArray[i]);
                page.setColor(Color.red);
                page.drawString("" + hourArray[i], top+25, 450-hourArray[i]-5);
                page.setColor(Color.blue);
                if(i==0)
                   page.drawString("12PM-1PM", top+5, 470);
                else if (i==1)
                            page.drawString("1PM-2PM", top+5, 470);
                else if (i==2)
                            page.drawString("2PM-3PM", top+5, 470);
                     else
                        page.drawString("3PM-4PM", top+5, 470);
                top = top + (width + 72);
            }
        }

        public void output() throws IOException
        {
            final FileWriter outputFile = new FileWriter("OUTPUT_Duguay");
            final BufferedWriter OutputBuffer = new BufferedWriter(outputFile);
            final PrintWriter out = new PrintWriter(OutputBuffer);
            weekArray = museumArray.getHours();
            dayArray = museumArray.getDays();
            hourArray = museumArray.getHours();
            for(int i=0; i<3; i++)
                out.println("Week " + (i+1) + ":" + weekArray[i]);
            for(int i=0; i<7; i++)
                out.println("Day " + (i+1) + ":" + dayArray[i]);
            for(int i=0; i<4; i++)
                out.println("Hour " + (i+1) + ":" + hourArray[i]);
            out.close();
            }




        private class ButtonListener implements ActionListener
        {
            public void actionPerformed (ActionEvent event)
            {
                Object source = event.getSource();
                if (source == week)
                {
                    numb = 1;
                    repaint();
                }
                else if (source == day)
                {
                    numb = 2;
                    repaint();
                }
                else if (source == hour)
                {
                    numb = 3;
                    repaint();
                }
                else
                {
                    numb = 4;
                    output();
                    repaint();
                }
            }
        }
    }