JTable grid line not appearing

http://www.instaprint.com/images/helptable.gif
I've tried...
making the total width of the columns smaller than the width of the table,
making the width of the table smaller than the preferred width of the JScrollPane,
jobTable.getColumnModel().getColumn(0).setPreferredWidth(65);
jobTable.getColumnModel().getColumn(1).setPreferredWidth(75);
jobTable.getColumnModel().getColumn(2).setPreferredWidth(70);
jobTable.getColumnModel().getColumn(3).setPreferredWidth(60);
(Total Width = 270)
scrollPane = new JScrollPane(jobTable);
scrollPane.setPreferredSize(new Dimension(270, 191));
scrollPane.setBorder(new EmptyBorder(0, 0, 0, 0));
constraints.insets = new Insets(0, 0, 0, 0);
constraints.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(scrollPane, constraints);
displayPanel.add(scrollPane);
I'm using GridBagLayout, any ideas??

thanks a lot guys
i solved that using a post in the forums.
i just had to write
super..setBorderPainted(true);
and it worked
thanks

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