setting size of Container

[Joel Christophel]

I'm having trouble setting the size of my Container. From the code below, when I place Container gamePane in a resizable JFrame and expand the frame, the spacing of the gamePane's contents expands to match the size of the frame despite my various attempts to keep the gameFrame at a set size.

 void addSlots() {
		ButtonHandler bh = new ButtonHandler();
		gamePane = getContentPane();
		gamePane.setMaximumSize(new Dimension(685, 622)); //sizing attempt 1
		gamePane.setPreferredSize(new Dimension(685, 622)); //attempt 2
		gamePane.setBounds(100, 100, 685, 685); //attempt 3
		GridLayout gl = new GridLayout(6, 6, 0, 0); //attempt 4 - set the vertical and horizontal gaps to zero
		gl.preferredLayoutSize(gamePane); //attempt 5
		gamePane.setLayout(gl);

		for (int counter = 0; counter < slot.length; counter++) {

			slot[counter] = new JButton();
			slot[counter].setIcon(makeSlot("White", counter));
			slot[counter].setBorderPainted(false);
			slot[counter].setContentAreaFilled(false);
			slot[counter].setFocusPainted(false);
			slot[counter].setActionCommand(counter + "");
			slotColor[counter] = "White";

			slot[counter].addActionListener(bh);
			add(slot[counter]);

		}
	}

[Michael Dunn]

> when I place Container gamePane in a resizable JFrame and expand the frame, the spacing of the gamePane's contents expands to match the size of the frame

if you're adding it via the frame's default layoutManager (BorderLayout), it will always occupy all the space.

couple of ways to do it here

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class Testing
{
  public void buildGUI()
  {
    JPanel gamePanel = new JPanel();
    gamePanel.setBackground(Color.RED);
    gamePanel.setPreferredSize(new Dimension(400,300));

    JPanel holdingPanel = new JPanel(new GridBagLayout());///A
    holdingPanel.add(gamePanel,new GridBagConstraints());///A
    //JPanel holdingPanel = new JPanel();///B
    //holdingPanel.add(gamePanel);///B

    JFrame f = new JFrame();
    f.getContentPane().add(holdingPanel);
    f.setSize(800,600);
    f.setLocationRelativeTo(null);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
  }
  public static void main(String[] args)
  {
    SwingUtilities.invokeLater(new Runnable(){
      public void run(){
        new Testing().buildGUI();
      }
    });
  }
}