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.

If you are fortunate enough to be using JDK 7, the newly available Objects class is the obvious (at least to me) choice for implementing the “common” Java object ...

The HashMap tutorial also includes some useful code snippets that help developers understand what's going on with a Java HashMap under the covers. For example, the following code used in the tutorial ...

author of Sybex’s wildly popular Java 11 Oracle Certified Professional certification books, that means “less dealing with hashCode/equals and less for the code coverage [testing] tool to be ...