Changing sizes of a container

Question

I have an application that has a picture loaded into a label. I am using a shortcut menu to allow the user to change the picture by using a JFileChooser. Below is the code that I use to do that:
private void changePic() {               
    //Change the picture on the user menu
    String path = null;
    final JFileChooser fc = new JFileChooser();
    int returnVal = fc.showOpenDialog(this);
    try {
     if(returnVal == JFileChooser.APPROVE_OPTION) {
         path = fc.getSelectedFile().getAbsolutePath();
            stmnt.executeUpdate("UPDATE " + user + "PICS SET PATH = '" + path + "' WHERE PICNAME = 'usermenu'");
            //Set the picWidth and picHeight to 0 so size will be found in loadPic
         picWidth=0;
         picHeight=0;
            //The loadPic method just loads the picture and returns an Icon
         pic_label.setIcon(loadPic(path,"usermenu"));
         pic_label.setText("");     
    catch(SQLException e) {System.err.println("SQLException: " + e);}
}Ok my question is that when the new picture comes up on the screen of course it can be all different sizes and shapes. My problem is that I can get the picture to redraw itself but the whole JFrame or Container stays the exact same size it was before. I tried to repaint the JFrame and the container both but that didn't help me. What do I need to do so that the frame is sized correctly after I change the size of the picture?

Answer 1

http://java.sun.com/j2se/1.3/docs/api/javax/swing/JFrame.html
JFrame has all of the Methods inherited from class java.awt.Component available to it. I don't see setPreferredSize (sorry) but there is setSize(), setBounds(). If you need to take other controls into account you would have to add the size of that component to the size you get from the image. repaint and validate update the appearance of components on the screen. I'm not sure if you need to call them but if you do it's just
repaint();
validate();