TableView cells gobble up my memory

Question

Does anyone know how to re-use a tableview cell renderer? I have a table with 50 visible rows and 20 visible columns so fx creates 50*20=1000 instances of TableCell,
each is around 488b shallow size and around 4030 bytes retained size (as profiler told me) so that makes my table, just the table not counting my data to use over 4 Mb !
And I need 10 tables in my app.
Does anyone have any ideas how to reuse cell/renderer or minimize memory usage?
Any help is greatly appreciated!
Here is a sample of how I create factory and renderers.
TableColumn column = new TableColumn(name);
column.setMinWidth(20);
column.setCellValueFactory(new PropertyValueFactory<Person, String>(propertyName));
column.setCellFactory(new MyCellFactory());
class MyCellRenderer extends TableCell<Person, String>
public MyCellRenderer()
super();
protected void updateItem(String value, boolean empty)
super.updateItem(value, empty);
if (!empty)
setText(value + " *");//this is instead of my real sophisticated operation
class MyCellFactory implements Callback<TableColumn, TableCell>
public MyCellFactory()
public TableCell call(TableColumn p)
return new MyCellRenderer();
}

Answer 1

Completely uninstall Norton Antivirus.
Norton antivirus is a known source of problems and issues for Macs running OS X.
Also, you are wrong about your RAM.
Your 2008 model iMac can take up to 6 GBs of RAM.
I noticed you have upgraded to OS X 10,8 Mountain Lion
Unfortunately, both OS X 10.7 Lion and OS X 10.8 Mountain Lion use more CPU, GPU,RAM and hard drive resources.
OS X, by itself, can use between and up to  2-4 GBs of RAM to run smoothly, quickly and efficiently.
That leaves very little precious RAM for other applications to run with.
You can replace one of your 2 Gb RAM modules with a 4 GB module to,give your iMac a total max. RAM of 6 GBs.
Correct and reliable Mac RAM can be purchased from online Mac RAM source OWC (macsales.com).
http://eshop.macsales.com/shop/memory/iMac/Intel_Core_2_Duo_PC2-6400
Good Luck!