Java’s equals() and hashcode() are two methods that work together to verify if two objects have the same value. You can use them to make object comparisons easy and efficient in your Java programs.

A good resource on using EqualsBuilder and HashCodeBuilder in conjunction with Hibernate for equals() and hashCode() is available in Write Simpler equals and hashCode Java Methods Using ...

Transcript - How a Java HashMap internal implementation works One of the most common Java interview questions, and it is an advanced Java interview question, is: How does a Java HashMap work?They're ...