Core Spring Data
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via javarevisited.blogspot.in
Published: Mar 04 2013 / 20:43

How to retrieve key from value on HashMap in Java
Getting key from value in HashMap is not easy, because HashMap allows null values, multiple key pointing to same value. Bidirectional Map provided by Guava is good alternative in such situation but if you had to do it with Java, you may follow one of these examples.
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