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Attempting to set the color of a JTextField

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  Attempting to set the color of a JTextField "John L." <johnlarew@sbcglobal.net> - 2011-10-14 07:15 -0700
    Re: Attempting to set the color of a JTextField Knute Johnson <nospam@knutejohnson.com> - 2011-10-14 07:21 -0700
      Re: Attempting to set the color of a JTextField "John L." <johnlarew@sbcglobal.net> - 2011-10-14 08:05 -0700
        Re: Attempting to set the color of a JTextField Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-10-14 10:42 -0700
          Re: Attempting to set the color of a JTextField "John L." <johnlarew@sbcglobal.net> - 2011-10-19 07:16 -0700
    Re: Attempting to set the color of a JTextField Roedy Green <see_website@mindprod.com.invalid> - 2011-10-14 09:44 -0700

#8792 — Attempting to set the color of a JTextField

I'm trying to change the color of a JTextField. There are many
interesting discussions on much more detailed topics in other posts.

Here is my best attempt, which does NOT work as I might reasonably
expect:

class ITextField extends JTextField
{
   private String s1 = null;
   public void setText(String s) {
      s1 = s;
   }
   public void paintComponent(Graphics g) {
      super.paintComponent(g);
      Graphics2D g2 = (Graphics2D) g;
      if (s1 != null) {
         g2.setPaint(Color.RED);
         g2.drawString(s1,0,0);
      }
   }
}

Thanks in advance for any help or insight you may be able to provide.

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#8794

On 10/14/2011 7:15 AM, John L. wrote:
> I'm trying to change the color of a JTextField. There are many
> interesting discussions on much more detailed topics in other posts.
>
> Here is my best attempt, which does NOT work as I might reasonably
> expect:
>
> class ITextField extends JTextField
> {
>     private String s1 = null;
>     public void setText(String s) {
>        s1 = s;
>     }
>     public void paintComponent(Graphics g) {
>        super.paintComponent(g);
>        Graphics2D g2 = (Graphics2D) g;
>        if (s1 != null) {
>           g2.setPaint(Color.RED);
>           g2.drawString(s1,0,0);
>        }
>     }
> }
>
> Thanks in advance for any help or insight you may be able to provide.

See setOpaque(), setForeground() and setBackground()

-- 

Knute Johnson

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#8795

I might report that this new reasonable attempt failed also:

class ITextField extends JTextField
{
   private String s1 = null;
   public void setText(String s) {
      s1 = s;
   }
   public void paintComponent(Graphics g) {
      super.paintComponent(g);
      Graphics2D g2 = (Graphics2D) g;
      if (s1 != null) {
         setOpaque(true);
         setForeground(Color.RED);
         g2.drawString(s1,0,0);
         repaint();
      }
   }
}

BTW, the background is not red.

Thanks in advance for any help or insight you may provide.

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#8801

On 10/14/11 8:05 AM, John L. wrote:
> I might report that this new reasonable attempt failed also:
>
> class ITextField extends JTextField
> {
>     private String s1 = null;
>     public void setText(String s) {
>        s1 = s;
>     }
>     public void paintComponent(Graphics g) {
>        super.paintComponent(g);
>        Graphics2D g2 = (Graphics2D) g;
>        if (s1 != null) {
>           setOpaque(true);
>           setForeground(Color.RED);
>           g2.drawString(s1,0,0);
>           repaint();
>        }
>     }
> }
>
> BTW, the background is not red.
>
> Thanks in advance for any help or insight you may provide.

Don't set those in the paintComponent method, they are meant to be set 
by the code constructing the field.  Extending JTextField is the wrong 
approach.


JTextField textField = new JTextField();
textField.setForeground(Color.RED);


That should do what you want.

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#8998

Thanks, I thought I tried that initially, before attempting this more
involved technique.

Whatever the case, it works as reasonably expected now.

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#8800

On Fri, 14 Oct 2011 07:15:11 -0700 (PDT), "John L."
<johnlarew@sbcglobal.net> wrote, quoted or indirectly quoted someone
who said :

>I'm trying to change the color of a JTextField. There are many
>interesting discussions on much more detailed topics in other posts.

There is no need to override paintComponent just to change colours:

      final JFrame jFrame = new JFrame();
            final Container contentPane = jFrame.getContentPane();
            final JTextField textfield = new JTextField( "this is a
TEST" );
            textfield.setBackground( Color.BLACK );
            textfield.setForeground( Color.YELLOW );

see http://mindprod.com/jgloss/jtextfield.html

If fooling around with paintComponent just to experiment
see http://mindprod.com/jgloss/paintcomponent.html

The trick is setOpaque.
-- 
Roedy Green Canadian Mind Products
http://mindprod.com
It should not be considered an error when the user starts something
already started or stops something already stopped. This applies
to browsers, services, editors... It is inexcusable to 
punish the user by requiring some elaborate sequence to atone,
e.g. open the task editor, find and kill some processes.

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