Thread: setPrefferedsize not working?

Hi,

scenario:

i was working on a swing application,which involved placing one panel inside another hence i placed the panel2(layout:borderlayout) inside another panel1(layout: box layout),but when i tryed to change the size of panel2 with the help of setPrefferedsize() method it failed to resize the panel! please provide me any hint on this problem,do you have to use the method setMaximumsize() or sumthing?.

apologies if my english was bad!

class CallMe extends JDialog
{
    public CallMe()
  {
        initUI();
 
  }
 
    public void initUI()
    {
        setTitle("Tip of the Day");
        setLocation(350,150);
        setSize(1000,1000);
 
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
 
        JPanel parentpanel=new JPanel();
        BoxLayout box=new BoxLayout(parentpanel,BoxLayout.Y_AXIS);
        parentpanel.setLayout(box);       
        JPanel toppanel=new JPanel();
        BorderLayout borderlayout=new BorderLayout();
        toppanel.setLayout(borderlayout);    
 
      [B]  toppanel.setPreferredSize(new Dimension(400,50));     [/B]
 
        toppanel.setBackground(Color.red);
        JLabel label=new JLabel("JDeveloper Productivity Hints");       
        label.setBorder(BorderFactory.createEmptyBorder(0, 30, 0, 0));
        toppanel.add(label,BorderLayout.WEST);
        ImageIcon icon=new ImageIcon("c:\\pics\\ship.png");
        JLabel label2=new JLabel(icon);
        label2.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 30));
        toppanel.add(label2,BorderLayout.EAST);
        JSeparator seperator=new JSeparator();
        seperator.setForeground(Color.gray);
        toppanel.add(seperator,BorderLayout.SOUTH);       
 
        [B]parentpanel.add(toppanel);[/B]
 
        add(parentpanel);
 
    }
 
}

Kind regards,
Manish87

Hi,

Thanks for the reply sir,as you had pointed out some of the error in the code,i have modified it according to it!.But the problem of resizing of panel in the box layout container still persist.

Here's My modified code:

 
class CallMe extends JDialog
{
    public CallMe()
    {
 
        initUI();
 
    }
 
    public void initUI()
    {
 
            setSize(500,500);
            setLocation(450,200);
            setTitle("Simple program");
 
 
            BoxLayout b=new BoxLayout(getContentPane(),BoxLayout.Y_AXIS);       //create boxlayout
            getContentPane().setLayout(b);                                             //change the default-layout(borderLayout) of   ontentpane to BoxLayout
            JPanel panel=new JPanel();
            JButton button1=new JButton("Click me");
            panel.add(button1);                                                            //add the button to the panel which has flow layout(default)
            panel.setBackground(Color.red);
            [B]panel.setPreferredSize(new Dimension(100,50));               //set The size of the panel ***dsnt seem to have any effect on the code***[/B]
 
       //panel.setMaximumSize(new Dimension(1500,50));              // when this code is added the panel is set to the desired size!
 
         getContentPane().add(panel);                                            //add the panel to the contentpane
         getContentPane().add(Box.createVerticalGlue());              //create an vertical invisible component once the panel has been added
 
 
    }
 
 
 
 
}