Java AWT Reference
by John Zukowski


Unconfirmed error reports are from readers.  They have not yet been 
approved or disproved by the author or editor and represent solely the
opinion of the reader.


This page was updated September 28, 1998.


UNCONFIRMED errorsand comments from readers:


{25} getClipRect() is NOT abstract


{48} is Empty : a rectangle is empty if *either* its width or height
is less than or equal to 0


{219} In window and frame, a few methods have been specified as
synchronized while they were not (or the reverse) window::addNotify,
synchronized Frame::set[Tiltle | IconImage ]

It would be worth telling that window::pack() starts with calling
addNotify to make sure all the components of the container have a peer
(that their size can be known : they are valid).


{229} I believe there is an error in an example on page 229 of this
book.  In the example at the bottom of the page, which addresses
handling WINDOW_CLOSING events under the 1.1 delegation model, the
last line of the example shows the invocation:

super.processEvent(e)

I believe it should be: 

super.processWindowEvent(e)


{257, 259, 560} Errata on class BorderLayout: the method public
Dimension maximumLayoutsize(Container target) is said to be abstract.
Javadoc 1.1 does not:

"
maximumLayoutSize 

  public Dimension maximumLayoutSize(Container target)
     Returns the maximum dimensions for this layout given the
  components in the specified target container.
     Parameters: 
          target - the component which needs to be laid out 
     See Also: 
          Container, minimumLayoutSize, preferredLayoutSize 
"

In my opinion, it should do the same as preferred or minimumLayoutSize
but with calling getMaximumSize on its components.


{281} It says "The north region contains a panel with a single Label
in it" and then explains why a panel was used instead of adding the
label directly to the Applet.  But, the source code at the top of
p.281 does add the Label directly to the applet.


{369} CheckboxMenuItem Methods lists two identical constructors for
CheckboxMenuItem(String label) and explains in the text for one that it 
creates a unlabled checkbox, and explains in the text for the other that it
does create a labled checkbox.  Its my guess that the first constructor is
a typo and should actually read 'public CheckboxMenuItem()' rather than
'public CheckboxMenuItem(String label)'


{378} The line that starts with (is.getSelectedObjecteds ... has one
too many )s.  It should be "0));".

(I think this is true, but since I don't know Java, I'm waiting for
confirmation before I move it up. -efm)