Does HashMap provide a one to one correspondence?

Posted by Roman on Stack Overflow See other posts from Stack Overflow or by Roman
Published on 2010-03-23T15:04:17Z Indexed on 2010/03/23 15:13 UTC
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I found the following statement:

Map is an object that stores key/volume pairs. Given a key, you can find its value. Keys must be unique, but values may be duplicated.

For example I have just one key/value pair (3,4). And now I put a new pair (3,5). It will remove the old pair. Right? But if I put (2,4) instead of (3,4) I will add a new pair of key/value to the HashMap. Right?

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