JFrame issues

[ishdevil]

Hi guys,

I am new to Java and I am trying to build a window-based application.

I have some idea of how to do this, however I have run into a few problems. Here is the frame section of my code, below that I will post my concerns:
//Method that creates a blank frame
public static void Form()
{
//Code that creates a blank frame
JFrame frame = new JFrame("Wages");
frame.setResizable(true);
frame.setSize(400, 400);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E);

JPanel panel = new JPanel();
frame.add(panel);

JTextArea jat = new JTextArea("Test",10,20);

JLabel label1 = new JLabel("Label 1");

JButton button1 = new JButton("Button 1");

panel.add(label1);
panel.add(button1);
panel.add(jat);
}
//Main method
public static void main(String[] args)throws FileNotFoundException
{
/*I use a main method because the frame is
* not the only method that I am using
*/
Form();
}

Core issues:

1. When I run the program, I have to resize (either maximize or minimize) the window in order for it to show the contents (i.e. the text area, button, and the label).
2. Whenever I do try to change the location of any of my panel items (eg. jat.setLocation(20, 20);), they still appear in the same location as if I did not set the location to begin with.

If any of my declarations or method uses seem elementary, remember that I am still a newbie.

I would appreciate any help that you all can offer.

Regards,
Brent

[masijade]

call frame.pack() before calling frame.setVisible(true).

Because you need to learn about LayoutManagers. JPanel uses a FlowLayout by default, and the contentPane of JFrame has, per default, a BorderLayout.

See this and this and this