Ruels for correct implementation of hashCode() method : 1] if
two object returning true with equals() method , then they
should return same int with hashCode() method . 2] But the vice
versa is not true . I mean two object may have same hash code
but not returning true with equals() method . Is this right ???
Joined: Aug 08, 2003 Originally posted by rathi ji: Is this
right ??? Joined: Sep 24, 2003 I mean two object may have same
hash code but not returning true with equals() method . Not only
is it right, it is impossible for it to be wrong. That is, if I
created Integer.MAX_VALUE + 1 unique (equals returns false)
instances your class, I am guaranteed a hash code collision. In
practice, it is quite simple to create a hash code collision. I
wrote a small application once to demonstrate that generating
random 5 character Strings results in a collision about 3 times
per second on my development machine. I wrote it because some
twit was trying to use a String as a switch argument and claimed
that "it works" if y