Java HashSet - How does HashSet use hashCode and equals?

A brief introduction to why we need to have methods hashCode() and equals(Object o) in our class if when we want use the Java HashSet (or HashMap) library.

[saadmalikofficial]

Simply the Best and concise Explaination, loved it. Thank you

[somxai]

Thank you this save of lot of my time after stuck for a half week

[Proman.Offbeat.Traveller]

Cool and very innovative way to show the example

[shakeelmuhammed]

I have trouble remembering this sometimes, the physical models really helped with that. Thank you very much!

[ariesaqua]

Thank you, was able to understand difference clearly.

[tobito__]

Thank you for the creative explanation!

[shiyasmohammed]

Really helpful. Made it look really clear.👍

[engalibadouin]

colleen lewis you very Really helpful thank you

[YFProd]

Wow best explanation so far ! thank you