How to change the length of a JTextField? (Java/Swing)

[Akino877]

Hello,

I am trying to shorten the length of a JTextField with the following code :

// up to this point, getColumns() returns a value of 35.
//
jTextField1.setColumns(20);
(jTextField1.getParent()).invalidate();
(jTextField1.getParent()).validate();

When I ran this code, it did not change the length of the text field at all.

I wonder if I am writing my code correctly or is there a better/more correct
way to do this?

Thank you for your help.

Akino.

[Dököll]

Hey there!

Here are a bunch of ideas:

http://forums.sun.com/thread.jspa?th...ssageID=637676

Not sure of the legality of them but, seem to head somewhere.

Let us know!

[JosAH]

Hello,

I am trying to shorten the length of a JTextField with the following code :

// up to this point, getColumns() returns a value of 35.
//
jTextField1.setColumns(20);
(jTextField1.getParent()).invalidate();
(jTextField1.getParent()).validate();

When I ran this code, it did not change the length of the text field at all.

I wonder if I am writing my code correctly or is there a better/more correct
way to do this?

Thank you for your help.

Akino.

The columns property of a JTextField is a rough estimation used for the calculation
of the preferred size of the component. The preferred width is columns times the
width of the letter 'm' displayed in a certain font. Once a LayoutManager has got
his hands on the JTextField that column property doesn't mean much anymore.
It most certainly doesn't determine the maximum number of characters that can
be entered in the field.

The columns property is a 'bound property' so it can be changed.

kind regards,

Jos