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In the Java specification, it is considered good practice to override .equals() and .hashCode() both together. In the context of HashMap, explain why implementing only one of the two instead of both can cause problems. You must consider both cases.
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Java Software Developer

Interviewed at IMC Trading

4.1★
Apr 18, 2015

In the Java specification, it is considered good practice to override .equals() and .hashCode() both together. In the context of HashMap, explain why implementing only one of the two instead of both can cause problems. You must consider both cases.

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