JFrame.java: Implement WindowConstants.

JFrame.java: Implement WindowConstants.

2004-04-21  Mark Wielaard  <mark@klomp.org>

	* javax/awt/JFrame.java: Implement WindowConstants. Remove final
	static fields defined in interface.
	* javax/awt/JDialog.java: Likewise.
	(JDialog): Make constructors public.
	(getDefaultCloseOperation): Make public.
	(processWindowEvent): Call System.exit(0) when EXIT_ON_CLOSE set.
	(setDefaultCloseOperation): Make public. Check argument. Add API doc.
	* javax/swing/JViewport.java (JViewport): Make constructor public.

From-SVN: r80945