Progress bar in a JProgressBar component is not always drawn

Question

Hi experts,
I have a strange issue with a swing application. This app contains of a JFrame including a JTable. This table has multiple columns, one of them is a JProgressBar (implementing a TableCellRenderer). Multiple background threads are running, every of them updates one row's progress bar via the InvokeLater() method. This works fine.
At a specific point within the runtime of the application, the value of a progress bar is set back to 0, and instead of the default percentage text a custom string is displayed (then continuing to progress with this custom text set). This works fine as well.
Problem is, that when a custom string is set to one progress bar as described above, then the bars of the other JProgressBars are not painted any more. But the default percentage text of these other JProgressBars are still incremented and painted correctly. When the one progress bar, that has the custom string set, has finished and this row is removed from table, then the other progress bars are again painted correctly (including the default percentage text).
A part of the custom TableCellRenderer class is shown here:
     public class ProgressRenderer extends JProgressBar implements TableCellRenderer
     public ProgressRenderer()
          super(SwingConstants.HORIZONTAL);
          setBorderPainted(false);
          setStringPainted(true);
     public Component getTableCellRendererComponent(JTable table, Object value,
          boolean isSelected, boolean hasFocus, int row, int column)
          if(value != null)
               setValue(((JProgressBar) value).getValue());
               setString(((JProgressBar) value).getString());
               setMinimum(((JProgressBar) value).getMinimum());
               setMaximum(((JProgressBar) value).getMaximum());
          return this;
...Any ideas what could be wrong here?
I am really out of ideas here :(
Thanks in advance for your help!
Kind regards, Matthias

Answer 1

I have solved the problem:
     public Component getTableCellRendererComponent(JTable table, Object value,
          boolean isSelected, boolean hasFocus, int row, int column)
          if(value != null)
               setString(((JProgressBar) value).getString());
               setMinimum(((JProgressBar) value).getMinimum());
               setMaximum(((JProgressBar) value).getMaximum());
               setValue(((JProgressBar) value).getValue());
          return this;
     }