Pack() changes sizes of contained components

Question

I'm having some weird experiences with the lastest OpenJDK. Seeing how it is an unreleased JDK, I don't really know if it's just a bug in it (the stock Sun JDK does not display this behavior), or if I have misunderstood something in AWT again, though. Please see the below code:
public class test {
    public static void main(String[] args) {
     Frame f = new Frame("Test");
     Canvas c = new Canvas();
     f.add(c);
     c.setSize(100, 100);
     System.out.println(c.getSize() + ", " + f.getSize());
     f.pack();
     System.out.println(c.getSize() + ", " + f.getSize());
     f.setVisible(true);
}When I run this code, it first tells me the sizes of the Canvas and the frame as 100x100 and 0x0, as one would expect, and then, after the pack() method has been called, as 110x130 and 120x160. So the pack() method called on the Frame changes the size of the Canvas.
Is this supposed to be like this?

Answer 1

AndrewThompson64 wrote:
- Increase the size to 200x200 and it does not change. Guess why.I can't speak for your results, but it does for me. Again by exactly 10x30 more than the set size.
- Layouts generally honor the preferred size over the size.I thank both you and SomasekharPatil for this advice, but it does not seem to work for me. I called setPreferredSize as well, but I get the exact same result.
- Don't mix Swing with AWT.I don't -- I only use AWT. Ever, actually -- I dislike Swing. :)