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.

Obi Ezechukwu‘s blog High-Octane Java recently featured the post Compact Equals, which compares an implementation of a Java class’s overridden equals method in traditional form versus one ...

and it also requires a little bit of knowledge of the equals method. And by the way, just to give you an idea of the HashMap method -- uh, the hashCode method -- every time you create, um, an object ...