Positioning many panels...

[Martin vanPutten]

I know you can position panels by using BorderLayout or even FlowLayout... but it doesn't get my panels exactly as I want them... is there a way to set them eactly where you want them by using a from left and from top method (like css for example)?

[Craig Wood]

It takes some time to learn how to use what's available. For the long haul: Using Layout Managers.
For now: Doing Without a Layout Manager (Absolute Positioning).

[dave taubler]

Also, take a look at SpringLayout. It's a new-ish layout manager, and among other things it allows you to position components relative to the top/bottom/left/right of other components (including their own containers).

[Campbell Ritchie]

I have tried examples with SpringLayout and couldn't understand them. have a look at this tutorial about GridBagLayout, and how Cay Horstmann recommends we simplify GridBagLayout with the GBC class. I like Horstmann's method, myself.
There are several pages about Layouts in the Java Tutorial.

[edit]I appear to have given some of the same links as Craig Wood[/edit]
[ April 05, 2007: Message edited by: Campbell Ritchie ]

[Martin vanPutten]

I decided to stick with the absolute positioning... I like total control of my programs... but it gets this runtime error that I can't figure out... can anybody see anything.. this is one of my classes...

  import java.awt.*;
import javax.swing.*;
 
/**
 * Class ViewPanel - Manages the panels in the frame.
 * 
 * @author  Martin vanPutten
 * @version 2007.04.05
 */
 
public class ViewPanel extends JPanel
{
public ViewPanel(Listener list, Container pane)
{
pane.setLayout(null);

JLabel titleLabel = new JLabel("ZUUL");
titleLabel.setFont(new Font("Comic Sans", Font.BOLD, 70));

JLabel authorLabel = new JLabel("By: Martin vanPutten");
authorLabel.setFont(new Font("Comic Sans", Font.PLAIN, 24));

pane.add(titleLabel);
pane.add(authorLabel);

Insets insets = pane.getInsets();
Dimension size = titleLabel.getPreferredSize();
titleLabel.setBounds(25 + insets.left, 5 + insets.top, size.width, size.height);
size = authorLabel.getPreferredSize();
authorLabel.setBounds(55 + insets.left, 40 + insets.top, size.width, size.height);

//...//In the main method:
//Insets insets = frame.getInsets();
//frame.setSize(300 + insets.left + insets.right, 125 + insets.top + insets.bottom);
}
}  

[Campbell Ritchie]

Tell us what the error is, please.

[Martin vanPutten]

This is the runtime error...
Exception in thread "main" java.lang.NoSuchMethodError: ViewPanel.<init>(LListener V
at ViewManager.<init>(ViewManager.java:23)
at Game.main(Game.java:15)

Process completed.
I am using JCreator as my editor... this is exactly how it represents the error.

[dave taubler]

It looks like you have a typo somewhere; either in the code that you posted, or in your actual code that you're trying to run. Did you inadvertantly create a class called "LListener" (with two "L"s), or just mistype?

At any rate, you are trying to invoke a ViewPanel constructor that apparently existed at one point, but no longer does. Try changing the argument list tha ViewManager passes to the ViewPanel constructor.