Syntax error on token "(", ; expected Java Eclipse

Hi Experts

Using Eclipse and getting this error Syntax error on token "(", ; expected on line 59 it's the one with the main method on it.

It is saying something about the brackets not being right, i have tried commenting out lines and retyping the main method cannot seem to find whats wrong?

Any help will be greatly appriciated.

Code follows

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;




public class PanelTest {
      
      static Unit[] lengthArr = new Unit[11];
      lengthArr[0] = new Unit("Centimeter", 100.0);            
      lengthArr[1] = new Unit("Feet", 3.280839895);            
      lengthArr[2] = new Unit("Inch", 39.37007874);
      lengthArr[3] = new Unit("Kilometer", 0.001);
      lengthArr[4] = new Unit("League", 0.000207123);
      lengthArr[5] = new Unit("League(Nautical)", 1.0);
      lengthArr[6] = new Unit("Meter", 1.0);
      lengthArr[7] = new Unit("Microinch", 39370078.740157485);
      lengthArr[8] = new Unit("Mile", 0.000621371);
      lengthArr[9] = new Unit("Millimeter", 1000.0);
      lengthArr[10] = new Unit("Yard", 1.093613298);
      
      static JFrame myFrame = new JFrame("Test");                                    
      static JPanel container = new JPanel();                        
      static JPanel LengthPane = new JPanel(new GridBagLayout());                                    
      static JPanel LiquidPane = new JPanel(new GridBagLayout());                                    
      static JPanel MassPane = new JPanel(new GridBagLayout());                                          
      static JPanel TempPane = new JPanel(new GridBagLayout());                                          
      static JButton convert = new JButton("Convert");                        
      static JMenuBar menu1 = new JMenuBar();                                          
      static JMenu file = new JMenu("File");                                          
      static JMenu conversion = new JMenu("Conversion");                        
      static JMenuItem exit = new JMenuItem("Exit");
      static JMenuItem length = new JMenuItem("Length");
      static JMenuItem liquid = new JMenuItem("Liquid");
      static JMenuItem mass = new JMenuItem("Mass");
      static JMenuItem temp = new JMenuItem("Temperature");
      static JComboBox fromBox = new JComboBox(lengthArr);
      static JComboBox toBox = new JComboBox(lengthArr);
      static JTextField value = new JTextField(10);
      
      public static void main(String[] args) {
            // TODO Auto-generated method stub
            
            ActionListener buttonListener = new MyListener(){
            public void actionPerformed(ActionEvent e){
            }
            };
            ActionListener menuListener = new MyListener(){
                  public void actionPerformed(ActionEvent e){
                  if(e.getActionCommand().equals("Length")){
                        container.removeAll();
                        container.add(LengthPane);
                        container.revalidate();
                  }
                  else if(e.getActionCommand().equals("Liquid")){
                        container.removeAll();
                        container.add(LiquidPane);
                        container.revalidate();
                  }
                  else if(e.getActionCommand().equals("Mass")){
                        container.removeAll();
                        container.add(MassPane);
                        container.revalidate();
                  }
                  else if(e.getActionCommand().equals("Temperature")){
                        container.removeAll();
                        container.add(TempPane);
                        container.revalidate();
                  }
                  }
                  };
            //Menu bar ActionListeners      
            liquid.addActionListener(menuListener);
            exit.addActionListener(menuListener);
            length.addActionListener(menuListener);
            mass.addActionListener(menuListener);
            temp.addActionListener(menuListener);
            
            //Length panel build
            MyGrid.addItem(LengthPane, value,0,10,1,1,GridBagConstraints.WEST);
            MyGrid.addItem(LengthPane, fromBox,0,12,1,1,GridBagConstraints.WEST);
            MyGrid.addItem(LengthPane, toBox,0,14,1,1,GridBagConstraints.WEST);
            
            container.add(LengthPane);
            
            menu1.add(file);
            menu1.add(conversion);
            file.add(exit);
            conversion.add(length);
            conversion.add(liquid);
            conversion.add(mass);
            conversion.add(temp);
            
            myFrame.setJMenuBar(menu1);
            myFrame.setContentPane(container);
            myFrame.setSize(300,400);
            myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            myFrame.pack();
            myFrame.setVisible(true);
            
            }
}
}

Thanks