Thread: Problem with JPanel [...]

	public void init(Board board) {
 
		JPanel Panel = new JPanel();
		Panel.setLayout(new GridLayout(board.getWidth(), board.getHeight()));
		getContentPane().add(Panel, BorderLayout.CENTER);
		Panel.setBorder(new LineBorder(Color.BLACK));              // it does not work also
 
		bottomPanel = new JPanel(new FlowLayout());
		bottomPanel.setSize(1000, 100);
		bottomPanel.setBackground(Color.darkGray);
		getContentPane().add(bottomPanel, BorderLayout.SOUTH);
 
		t1 = new JButton();
		t2 = new JButton();
		t3 = new JButton();
 
		JPanel kit = new JPanel();
		kit.setSize(400, 90);
		bottomPanel.add(kit, BorderLayout.WEST);
 
		kit.add(t1);
		kit.add(t2);
		kit.add(t3);
	}

I have a JFrame. I added two JPanels to the JFrame. The first one is GridLayout and it should be situated at CENTER. Another one is bottomPanel, and that one should be situated at SOUTH.
I would like to add two new JPanels(kit and another one) to the bottomPanel.

Compiler does not show any warning or errors.

The problem is, that bottomPanel situates at NORTH, not at SOUTH. kit situates at CENTER of bottomPanel, not at WEST.

How to resolve it?

Thanks for your suggestions.

Regards.

public void init(Board board) 
{
 
		JPanel Panel = new JPanel();
		Panel.setLayout(new GridLayout(3,1); //this should center it for you but I did not test it
	}

jocdrew21, it should, but it does not.

Originally Posted by fkmk

I have a JFrame. I added two JPanels to the JFrame. The first one is GridLayout and it should be situated at CENTER. Another one is bottomPanel, and that one should be situated at SOUTH.
I would like to add two new JPanels(kit and another one) to the bottomPanel.

Compiler does not show any warning or errors.

The problem is, that bottomPanel situates at NORTH, not at SOUTH. kit situates at CENTER of bottomPanel, not at WEST.

Your description is not very clear. The following is my slightly modified version of your code to make the layout of components more obvious, and I also rectified the setting of component sizes.

public void init() {
    // To make Panel's location more obvious.
    JPanel northPanel = new JPanel();
    northPanel.add(new JButton("north"));
    getContentPane().add(northPanel, BorderLayout.NORTH);
 
    JPanel Panel = new JPanel();
    Panel.setLayout(new GridLayout(1, 2));
 
    Panel.add(new JButton("1"));
    Panel.add(new JButton("2"));
 
    getContentPane().add(Panel, BorderLayout.CENTER);
    Panel.setBorder(new LineBorder(Color.BLACK)); // it does not work also
 
    JPanel bottomPanel = new JPanel(new FlowLayout());
 
    // bottomPanel.setSize(1000, 100);
    // Use JComponent's setPreferredSize(), not Component's setSize().
    bottomPanel.setPreferredSize(new Dimension(1000, 100));
 
    bottomPanel.setBackground(Color.darkGray);
    getContentPane().add(bottomPanel, BorderLayout.SOUTH);
 
    JButton t1 = new JButton("t1");
    JButton t2 = new JButton("t2");
    JButton t3 = new JButton("t3");
 
    JPanel kit = new JPanel();
 
    // kit.setSize(400, 90);
    // Use JComponent's setPreferredSize(), not Component's setSize().
    kit.setPreferredSize(new Dimension(400, 90));
    bottomPanel.add(kit, BorderLayout.WEST);
 
    kit.add(t1);
    kit.add(t2);
    kit.add(t3);
}

With the above code, Panel, which has a GridLayout, is located in the CENTER of the window. bottomPanel, which contains 3 buttons, t1, t2 and t3, is located in the SOUTH of the window.

The 3 buttons in bottomPanel are located in the center of the panel, and this is because you're using FlowLayout for bottomPanel: "JPanel bottomPanel = new JPanel(new FlowLayout())". You'll need to change this to BorderLayout in order for "bottomPanel.add(kit, BorderLayout.WEST)" to take effect.

jashburn, thank you!