Bolding text in a JTable cell

Posted on 2001-06-29
Last Modified: 2008-02-01
I was wondering if anybody could please tell me how I can BOLD text in a particular cell within a JTable? From what I've read, it is simply a matter of playing around with a CellRenderer, maybe something like:

void setColour (TableColumn t){
  DefaultTableCellRenderer d = new DefaultTableCellRenderer();
  d.setFont(new Font("Courier", Font.ITALIC, 12));
  //trying to "hard-code"
  Component c = t.getHeaderRenderer().getTableCellRendererComponent(null, t.getHeaderValue(), false, false, 0, 0);
  c.setFont(new Font("Courier", Font.ITALIC, 12));

However, I can't seem to get a visual response from the JTable i.e. by querying the column/cell in question, I can confirm that the Font attribute of the column/cell/renderer has been updated, but there still isn't a change in the table when I run the Frame containing it.

Any suggestions would be greatly appreciated.
Question by:bmarfell
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Expert Comment

ID: 6237584
In the above code you haven't set the property Bold.
Use c.setFont(new Font("Courier", Font.ITALIC + Font.BOLD , 12));
LVL 92

Expert Comment

ID: 6237663
You need to set the font on the renderer.
Or define your own renderer.

((JLabel)t.getHeaderRenderer()).setFont(new Font(("Courier", Font.BOLD, 12));


Accepted Solution

kvkamesh earned 300 total points
ID: 6237776
 you have forget to make it bold use this one and tell me
 d.setFont(new Font("Courier", Font.ITALIC+Font.BOLD, 12));
this is the exact answer for your question
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Author Comment

ID: 6239745
Yeah, sorry, I initially had tried BOLD in place of ITALICS, but then I tried ITALICS to confirm that I wasn't getting anywhere.

I've tried all your suggestions but I'm still not seeing either BOLDED or ITALICISED text in my JTable. Is there some property of the JTable or the JScrollPane it sits on that could be over-riding the cell-renderer somehow?
LVL 92

Expert Comment

ID: 6239977

Please read ee guidlines for proposing answers.
That's exactly what tonus said.


Yes, I wasn't sure if setting the font on the renderer would work or not.
Sounds like you'll need to use the other option I specified and install your own renderer:

class MyTableCellRenderer extends DefaultTableCellRenderer
   public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
      COmponent c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
      c.setFont(new Font("Courier", Font.ITALIC+Font.BOLD, 12));
      return c;

And then use as follows:

   new MyTableCellRenderer());

LVL 92

Expert Comment

ID: 6243815
??? I thought you said you tried it and it didn't work?
And the solution was a copy of tonus's comment?

Expert Comment

ID: 6244439
Mr Objects
sorry boss i have done in my example i have not copied any one's code, please get it right ok.
I know its answer so i couldn't refere any comments. Please don't comment like this please.
Mr tonus  has given,but it is a comment, i have given as a exact answer so Mr bmarfell accepted ok

Expert Comment

ID: 6244460
Thanks for accepting my answer i am working some related application. Retrieving the data from database and displaying in the table. so there i used the same command, when saw your q? i immediately typed the answer.
please ask any q i will give you exact answer not comment?
Thank you
LVL 92

Expert Comment

ID: 6247034
tonus> c.setFont(new Font("Courier", Font.ITALIC + Font.BOLD , 12));

kvkamesh> d.setFont(new Font("Courier", Font.ITALIC+Font.BOLD, 12));

You tell me the difference.

ee guidleines> An answer is a specific solution to a question and should be submitted if it will solve the questioner's problem and doesn't duplicate a previous comment.


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