TreeMap or HashMap question

Hi,

I noticed that if I use the put method with the string as the parameter for any objectB, I would get that objectB back by using the get function with that string. However, if I use the put method as an objectA as a parameter for any objectB, I would not get back objectB even if objectA all the fields exactly the same. Is there a way to somehow override the checking mechanism like a comparator? Thanks.

[421 byte] By [edisont999a] at [2007-11-27 10:18:18]