Editing Library (computing) (section)

===Class===

A class library contains [[Class (computer science)|classes]] that can be used to create [[object (computer science)|objects]]. In [[Java (programming language)|Java]], for example, classes are contained in [[jar (file format)|JAR files]] and objects are created at runtime from the classes. However, in [[Smalltalk]], a class library is the starting point for a [[system image]] that includes the entire state of the environment, classes and all instantiated objects. Most class libraries are stored in a [[package repository]] (such as Maven Central for Java). Client code explicitly specifies dependencies to external libraries in build configuration files (such as a Maven Pom in Java).