Java collection framework provides you with the complete architecture of objects. Java frameworks group of objects includes – classes, interfaces, and algorithm.

Copying objects is a common Java programming operation that has one serious trap. Here's how to avoid copying from an object reference and only copy the instance and values you want.

Reference objects aren't just useful when memory is at a premium; they can also be used to provide slick caching abilities to any application.

What is the contract between equals() and hashcode()? Learn how these methods work together when comparing objects in Java.