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| What happens when the equals method is not overridden?
| What is the default implementation of the Object class equals method?
| What is the relationship between equals and hashcode methods?
| What is an object's identity?
| What should the equals method compare?
| What is an object's state?
| What happens when equals is called on 2 Integer instances having same value?
| What is the purpose of the hashcode method?
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