How to Fix: Overriding the java equals() method - not working?

To override the java equals() method, you need to implement both the equals() and hashCode() methods in your class. The equals() method checks for equality between two objects, while the hashCode() method returns a hash code value that can be used in data structures such as HashMap or HashSet. If you don't implement these methods, Java will use its default implementations, which may not work as expected.

🔍 Why This Happens

• [Cause]

🛠️ Step-by-Step Verified Fixes

public boolean equals(Book other) { return this.title.equals(other.title) && this.author.equals(other.author); }

import java.util.Objects; public boolean equals(Book other) { return Objects.equals(this.title, other.title) && Objects.equals(this.author, other.author); }