Dang Duy Hoang

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since Nov 17, 2016
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Recent posts by Dang Duy Hoang

I am reading "Item 9: Always override hashCode when you override equals" in Effective Java book.
I creat entity Person:



class Main have:



My problem that can't get object so I put into map before.

Could anybody help me to solve.
Thanks!
7 years ago