Java2D Clearing a Frame

Please do not flame me for bringing up java on our board, but I have a question that has been sitting for a long time on the Java Technologies Board, and has not been answered.

I have drawn with the graphics object on a jframe.
I want to delete the drawings on the frame and start over new.
Can I delete all drawings on that JFrame?
Possibly a method call that would erase all drawings. I'm wanting to reuse the frame for an additional drawing after it has been cleared.

Thank you for any help you provide.

A JFrame is a container widget that you add components to. Im not sure exactly what your drawing to but to remove everything from a JFrame use this...

myFrame.getContentPane().removeAll();

I believe you can simple do a fillRect() with a specified colour to clear the JFrame's contents.

Also, I think it is widely accepted that drawing directly on a JFrame is bad form. You should do your drawing on a derived JPanel class, and use it as the JFrame's content pane (using setContentPane()).

>>I believe you can simple do a fillRect() with a specified colour to clear the JFrame's contents.
<<

yeah, but your method just covers whats underneath...Perspective's method is better.

removeAll() just removes components from the JFrame.

It doesn't actually redraw the JFrame.

i searched google and found the following bit of code in a post that was made about 2 years ago. surprisingly it was not purged off the newsgroup it was located on. chalk another win for google. tell me what you think. yes it is a good way to do it, or no it isn't and why.

Code:

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Graphics x = getGraphics();
x.clearRect(0,0,400,400);        //400 X 400 (frame size)

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again what i'm trying to do is erase the frame i'm drawing using a graphics object and with graphic methods (drawOval() & drawLine()). again thank you for the help. on the java board, i didn't get much assistance at all.

btw the following doesn't work in my code for some reason.

Quote:

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Originally Posted by Perspective

myFrame.getContentPane().removeAll();

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i'm extending jframe and using the inharitence. i executed the code with

Code:

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getContentPane().removeAll();

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and nothing happened

another fu question

Quote:

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Originally Posted by Dante Shamest

Also, I think it is widely accepted that drawing directly on a JFrame is bad form. You should do your drawing on a derived JPanel class, and use it as the JFrame's content pane (using setContentPane()).

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why is it bad form? can you draw to a content pane similar like to a jframe?
i have attached my code as .txt for comments on how to fix the bad form.
please forgive the horrible commenting. I haven't finished the project yet.