How to maximize a JFrame Form?

Hello friends..
Posting for the first time since i am really an amateur to java.
What i am trying to do is making a GUI based Application in Netbeans.
I have a JFrame form in my application. Now i need to open this JFrame Form into full screen and maximized(obviouslyd different systems have different resolutions. So how to get to open my application in fullscreen on any machine??)

Also I Would like to ask about how to put up a picture in a JPanel. I have a surface knowledge of the topic that you have to pass the image as an object but i really don't know how.
Please help

Thanks in Advance..
And Thanks to all the members of the forum, You guys are doing a really Great Job helping out people with their problems.:)

Regards.

To maximize a JFrame you need the following code.

Code Java:

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myFrame.setExtendedState(JFrame.MAXIMIZED_BOTH);

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And to put an image in a JPanel you would create a JLabel and set the ImageIcon for that JLabel.

Code Java:

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someLabel.setIcon(new ImageIcon("C:\\Documents and Settings\\User\\Desktop\\image.png"));

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Thanks buddy...:) I think that shall work :) cheers...:)
The Maximizing worked..

but the code to place an image ain't working

Basically I am using a JDesktopPane to place internal frames in my Application and i want to apply Image to this JDesktopPane as a background.
Now what happens is when i use a label inside this DesktopPane to place an image as :

Code :

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public class User extends javax.swing.JFrame 
{
    public User() 
    {
        this.setExtendedState(JFrame.MAXIMIZED_BOTH);
        image.setIcon(new ImageIcon("D:\\Visuals\\walls\\Windows-8-Grass-Wallpaper1.jpg"));
        initComponents();
        paneltransact.setVisible(false);
        panelmastershoots.setVisible(false);
        panelmasterview.setVisible(false);
        //int height,width;
    }

---

where during runtime the following error is generated:

Attachment 1348

please help i also tried placing a panel inside the desktop pane and then placing a label inside the panel and then working out and same error showed up.

Where did you initialize the JLabel? It seems like you might be missing the following.

Code Java:

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JLabel image = new JLabel();
// And then then set the imageicon
image.setIcon(new ImageIcon("D:\\Visuals\\walls\\Windows-8-Grass-Wallpaper1.jpg"));

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I placed a JLabel component named "image" and it was automatically initialized inside the class(as it is done in netbeans). And then used the code :

Code :

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image.setIcon(new ImageIcon("D:\\Visuals\\walls\\Windows-8-Grass-Wallpaper1.jpg"));

---

and it still ain't working...:( sorry...i think will have to live without an image in project...
its okay...i can manage with that :)

By the way thanks for ur efforts..:)