The Apache Commons Collections are the components of the Apache Commons which are derived from Java API and provides component architecture for the Java language. Commons-Collections seek to build upon the JDK classes by providing new interfaces, implementations and utilities. This app covers most of the topics required for a basic understanding of Apache Commons Collections and to get a feel of how it works.

This app has been prepared for beginners to help them understand the basic to advanced concepts related to Apache Commons Collections.

Before you start practicing various types of examples given in this reference, we assume that you are already aware about computer programs and computer programming languages.