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Hash Code and Equals method Contract in java
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This video tutorial describes contract between equals and hash code method.
if two objects are equal by equals method then hash code must be same
Two diffrent object may have same hash code
Always override hash code when you overrides equals . Not doing so will prevent from functioning properly in all hash based collections hash map, hash set.
Also,explains why necessary to override equals and hashcode both.
if two objects are equal by equals method then hash code must be same
Two diffrent object may have same hash code
Always override hash code when you overrides equals . Not doing so will prevent from functioning properly in all hash based collections hash map, hash set.
Also,explains why necessary to override equals and hashcode both.
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