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Reminder: hashcode is not a key

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Christopher Wong

Posts: 128
Nickname: cwong15
Registered: Sep, 2009

Christopher Wong is a senior software engineer at lifeIMAGE.
Reminder: hashcode is not a key Posted: Aug 3, 2011 10:30 PM
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This post originated from an RSS feed registered with Java Buzz by Christopher Wong.
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I just wanted to share a reminder not to treat Object.hashCode() as a key. This seems very basic, but I have seen experienced developers get tripped up over this method. A number of people seem to think that hashCode can be relied on to return unique integers for each object value, especially for strings. Oops. For example, I saw someone write code that logically works like this: 1

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