Name: mc57594 Date: 07/12/99


Documentation for javax.swing.JFrame.setDefaultCloseOperation() claims that there's a value WindowConstants.EXIT_ON_CLOSE. However, javax.swing.WindowConstants.EXIT_ON_CLOSE does not exist.

===============================================
The web site is wrong:
http://java.sun.com/products/jdk/1.2/docs/api/javax/swing/JFrame.html#setDefaultCloseOperation(int)

If you download the docs:
file://docs/jdk1.2.1/docs/api/javax/swing/JFrame.html#setDefaultCloseOperation(int)
there is no mention of EXIT_ON_CLOSE for that method.

---------------------------
setDefaultCloseOperation

public void setDefaultCloseOperation(int operation)

      Sets the operation which will happen by default when the user initiates a "close" on this frame. The
      possible choices are defined in the WindowConstants interface:

            DO_NOTHING_ON_CLOSE - do not do anything - require the program to handle the operation in
            the windowClosing method of a registered WindowListener object.
            HIDE_ON_CLOSE - automatically hide the frame after invoking any registered WindowListener
            objects
            DISPOSE_ON_CLOSE - automatically hide and dispose the frame after invoking any registered
            WindowListener objects

      The value is set to HIDE_ON_CLOSE by default.
----------------------------------

[Chamness]
===============================================

(Review ID: 85456)
======================================================================

Name: skT88420 Date: 09/14/99


It is referenced in the 1.2.2 docs
 (http://www.javasoft.com/products/jdk/1.2/docs/api/javax/swing/JFrame.html#setDefaultCloseOperation(int))
 that the JFrame.setDefaultCloseOperation()
 can utilize the WindowsConstants.EXIT_ON_CLOSE constant - which, if it did
 call a System.exit() like function, would get programmers around the AWT bug
 (bug 4030718) that keeps the JVM alive even after all non-daemon threads
 have died, requiring a Ctrl-C to exit. But there is no
 WindowsConstants.EXIT_ON_CLOSE constant in the JDK 1.2.2. Not in the docs,
 and not in the source code.
(Review ID: 95232)
======================================================================

Name: skT88420 Date: 10/12/99


According to the documentation ( "$DOCPATH/api/javax/swing/JFrame.html#setDefaultCloseOperation(int)" )
there should be four constants for diffent actions , and the one that I would need in this case is
EXIT_ON_CLOSE . But when I tried to compile a source that contained a line like :
setDefaultCloseOperation ( WindowConstants.EXIT_ON_CLOSE ) ;
I got an error stating that there was no such constant .
According to JFrame's docs there shoulb be one , but according to
WindowConstants docs there isn't . And obviously not according to the compiler either .
I think I've used this in earlier releases , but there are ways to handle closing without it .
(Review ID: 96415)
======================================================================