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adding objects to HashMap that have duplicate keys
Joined: Oct 24, 2012
Jan 10, 2013 14:00:16
If I have a
, and I call .put() several times with the same key..for example..
map1.put("Monday", "temp1"); map1.put("Monday", "temp2");
Then the first put() call will return true and the second put() call will return false because the "Monday" key already exists?
Jayesh A Lalwani
Joined: Jan 17, 2008
Jan 10, 2013 14:03:55
put doesn't return a boolean.
returns the previous value. So, first call will return null and second call will return the first object
It is sorta covered in the
JavaRanch Style Guide
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