import javax.swing.JTable;
import javax.swing.JScrollPane;
import javax.swing.JFrame;
import javax.swing.table.AbstractTableModel;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileNotFoundException;
 
public class TableEx extends JFrame
{
	public TableEx(JTable aJTable)
	{
		final JTable table;
 
		if(aJTable == null)
		{
			table = new JTable(new MyTableModel());
		}
		else
		{
			table = aJTable;
		}
 
		JScrollPane scrollPane = new JScrollPane(table);
		getContentPane().add(scrollPane);
 
		setSize(200, 200);
		show();
 
		addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent we)
			{
				try /* Serialize the table before exiting the application */
				{
					ObjectOutputStream out = new ObjectOutputStream( new FileOutputStream("table.ser") );
					out.writeObject(table);
				}
				catch(Exception e)
				{
					System.out.println(e.getMessage());
				}
				System.exit(0);
			}
		});
	}
 
	public static void main(String[] args)
	{
		try
		{
			/* When starting the app, check if we have a serialized object */	
			ObjectInputStream in = new ObjectInputStream( new FileInputStream("table.ser") );
			System.out.println("Using user preferences...");
			new TableEx( (JTable)in.readObject() );
		}
		catch(FileNotFoundException fnfe)
		{
			System.out.println("Using defaults..."); /* No, we dont. */
			new TableEx(null);
		}
		catch(Exception e)
		{
			System.out.println(e.getMessage());
		}
	}
 
	class MyTableModel extends AbstractTableModel
	{
		Object[][] data = {
			{"Calories",    "130"},
			{"Total Fat",   "0%"},
			{"Sodium",      "1%"},
			{"Total Carbs", "12%"},
		};
 
		String[] columns = {"Item", "Amount per serving"};
 
		public int getColumnCount()
		{ return 2; }
 
		public int getRowCount()
		{ return 4;	}
 
		public String getColumnName(int c)
		{ return columns[c]; }
 
		public Object getValueAt(int rowIndex, int colIndex)
		{ return data[rowIndex][colIndex]; }
 
		public boolean isCellEditable(int rowIndex, int colIndex)
		{ return false; }
	}
}