how to get rid of trailing blank space in JTextField

Hi, there,

I thought this would be simple but I didn't find any answer by
searching.

My problem is not how to restrict user input to JTextField to a fixed
length.
The problem is, I need the JTextField to be almost exactly the same
length as the column of characters I entered.

I have set the allowed text input length to be 8 for example by using:

JTextField textField.setColumn(8);
textFieldContainerPanel.validate();

and I can see that the textField does shrink a little bit compare to
when I use setColumn(20); It does only allow user input to 8
characters.
But after I finish entered 8 characters from left to right, there's
still some blank space between the 8th character to the right edge of
the textField. (around 5 characters) It seems that the textField
layout manager always tries to leave more space than it needs for just
holding the "column" number of characters.

There is previous post:
http://groups.google.com/group/comp.lang.java.gui/browse_thread/thread/977cea7ef7745570/ac4fab7e991e768f?lnk=gst&q=JTextField+length&rnum=8#ac4fab7e991e768f

that suggest to get a hold of the Font object, can someone give more
detail on this method if appropriate?

same question asked at:
http://forum.java.sun.com/thread.jspa?threadID=701287&messageID=4068100
with no answer.

.

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