timer.start() required identifier?

I'm trying to put a counterdown timer in my Minesweeper program, however, on line 23 in my MinesweeperGrid timer.start(); is giving me an identifier expected error? I've looked in the APIs and nothing is required in start.();? help?

heres my code:
Code :
 1 import java.awt.*;
  2 import javax.swing.*;
  3 import java.awt.event.*;
  4 
  5 public class MinesweeperGrid extends JPanel
  6 {
  7 
  8         int currentTime = 0;
  9         JFrame frame;
 10         GridPanel[] grid;
 11         String currentDiff = "easy";
 12         JButton reset = new JButton ("Reset");
 13         JLabel  time = new JLabel ("Time");
 14         JLabel flag = new JLabel ("Flags");
 15 
 16         javax.swing.Timer timer = new javax.swing.Timer(1000, new ActionListener()
 17         {
 18                 public void actionPerformed (ActionEvent event)
 19                 {
 20                         time.setLabel(Integer.toString(currentTime));
 21                 }
 22         });
 23         timer.start();
 24 
 25         public MinesweeperGrid(JFrame newFrame)
 26         {
 27                 frame = newFrame;
 28                 grid = new GridPanel[81];
 29                 frame.getContentPane().setLayout(new GridLayout(10,9,0,0));
 30 
 31                 frame.getContentPane().add(time);
 32                 frame.getContentPane().add(new JLabel());
 33                 frame.getContentPane().add(new JLabel());
 34                 frame.getContentPane().add(new JLabel());
 35                 frame.getContentPane().add(reset);
 36                 frame.getContentPane().add(new JLabel());
 37                 frame.getContentPane().add(new JLabel());
 38                 frame.getContentPane().add(new JLabel());
 39                 frame.getContentPane().add(flag);
 40 
 41                 for( int i = 0; i < 81; i++)
 42                 {
 43                         grid[i] = new GridPanel();
 44                         frame.getContentPane().add(grid[i]);
 45                 }
 46 
 47         }
 48 
 49         public void changeDiff(String newDiff)
 50         {
 51                 if (newDiff.equals("easy"))
 52                 {
 53                         GridPanel[] newGrid = new GridPanel[81];
 54                         frame.getContentPane().removeAll();
 55 
 56                         frame.getContentPane().setLayout(new GridLayout(10,9,0,0));
 57 
 58                         frame.getContentPane().add(time);
 59                         frame.getContentPane().add(new JLabel());
 60                         frame.getContentPane().add(new JLabel());
 61                         frame.getContentPane().add(new JLabel());
 62                         frame.getContentPane().add(reset);
 63                         frame.getContentPane().add(new JLabel());
 64                         frame.getContentPane().add(new JLabel());
 65                         frame.getContentPane().add(new JLabel());
 66                         frame.getContentPane().add(flag);
 67 
 68                         for( int i = 0; i < 81; i+69+)
 69                         {
 70                                 newGrid[i] = new GridPanel();
 71                                 frame.getContentPane().add(newGrid[i]);
 72                         }
 73                         frame.getContentPane().validate();
 74                         super.repaint();
 75                         currentDiff = "easy";
 76                 }
 77 
 78                 if (newDiff.equals("medium"))
 79                 {
 80 
 81                         GridPanel[] newGrid = new GridPanel[256];
 82                         frame.getContentPane().removeAll();
 83 
 84                         frame.getContentPane().setLayout(new GridLayout(17,16,0,0));
 85 
 86                         frame.getContentPane().add(time);
 87                         frame.getContentPane().add(new JLabel());
 88                         frame.getContentPane().add(new JLabel());
 89                         frame.getContentPane().add(new JLabel());
 90                         frame.getContentPane().add(new JLabel());
 91                         frame.getContentPane().add(new JLabel());
 92                         frame.getContentPane().add(new JLabel());
 93                         frame.getContentPane().add(new JLabel());
 94                         frame.getContentPane().add(reset);
 95                         frame.getContentPane().add(new JLabel());
 96                         frame.getContentPane().add(new JLabel());
 97                         frame.getContentPane().add(new JLabel());
 98                         frame.getContentPane().add(new JLabel());
 99                         frame.getContentPane().add(new JLabel());
100                         frame.getContentPane().add(new JLabel());
101                         frame.getContentPane().add(flag);
102 
103                         for( int i = 0; i < 256; i++)
104                         {
105                                 newGrid[i] = new GridPanel();
106                                 frame.getContentPane().add(newGrid[i]);
107                         }
108                         frame.getContentPane().validate();
109                         super.repaint();
110                         currentDiff = "medium";
111                 }
112 
113                 if (newDiff.equals("hard"))
114                 {
115 
116                         GridPanel[] newGrid = new GridPanel[480];
117                         frame.getContentPane().removeAll();
118 
119                         frame.getContentPane().setLayout(new GridLayout(25,20,0,0));
120 
121                         frame.getContentPane().add(time);
122                         frame.getContentPane().add(new JLabel());
123                         frame.getContentPane().add(new JLabel());
124                         frame.getContentPane().add(new JLabel());
125                         frame.getContentPane().add(new JLabel());
126                         frame.getContentPane().add(new JLabel());
127                         frame.getContentPane().add(new JLabel());
128                         frame.getContentPane().add(new JLabel());
129                         frame.getContentPane().add(new JLabel());
130                         frame.getContentPane().add(new JLabel());
131                         frame.getContentPane().add(reset);
132                         frame.getContentPane().add(new JLabel());
133                         frame.getContentPane().add(new JLabel());
134                         frame.getContentPane().add(new JLabel());
135                         frame.getContentPane().add(new JLabel());
136                         frame.getContentPane().add(new JLabel());
137                         frame.getContentPane().add(new JLabel());
138                         frame.getContentPane().add(new JLabel());
139                         frame.getContentPane().add(new JLabel());
140                         frame.getContentPane().add(flag);
141 
142                         for( int i = 0; i < 480; i++)
143                         {
144                                 newGrid[i] = new GridPanel();
145                                 frame.getContentPane().add(newGrid[i]);
146                         }
147                         frame.getContentPane().validate();
148                         super.repaint();
149                         currentDiff = "hard";
150                 }
151         }
152 
153         public class resetListener implements ActionListener
154         {
155                 public void actionPerformed (ActionEvent event)
156                 {
157                         changeDiff(currentDiff);
158                 }
159         }
160         public class timeListener implements ActionListener
161         {
162                 public void actionPerformed (ActionEvent event)
163                 {
164                         currentTime++;
165                         time.setText(Integer.toString(currentTime));
166                         repaint();
167                         System.out.println("hey, work!");
168                 }
169         }
170 }