The following problem was originally reported in 4634068.
There are a number of classes that do not respect the
implied contract for equals and hashCode. See, for example,
Joshua Bloch's book "Effective Java", items 7-8.
equals(java.awt.DisplayMode) but doesn't redefine
Problems found by applying automatic tools to JDK
libraries. However, manual inspectation of the classes
reveals the same problems.
-- iag@sfbay 2002-02-06