Java 'equals & hashCode' Contract | Design Principles

Java's "equals & hashcode" Contract![design]

What is the general contract of hashCode?
What is equals contract in Java?
What is the difference between == and equals and hashCode in Java?
Why do we override hashCode and equals?
Can two objects have the same hashCode?

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Chapters:
0:00 Introduction to video
0:37 Information PPT on equals() and hashcode() Contract
2:41 Actual example of class denoting POJO class
3:24 Main class creation and demo of example
6:13 Overriding of equals() method
10:44 Overriding of hashCode() method
14:05 Conclusion of video
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[kavitachavan]

Excellent explanation cleared the concepts really

[kavitachavan]

Equals and hashcode contract 1 must know

[kavitasurve]

Got cleared both theoratically and practically

[martandsurve]

Equals and hashcode contract is must know concept