Commons Lang 2.4 API

Packages

org.apache.commons.lang	Provides highly reusable static utility methods, chiefly concerned with adding value to java.lang and other standard core classes.
org.apache.commons.lang.builder	Assists in creating consistent equals(Object), toString(), hashCode(), and compareTo(Object) methods.
org.apache.commons.lang.enum	Deprecated and replaced by org.apache.commons.lang.enums and will be removed in version 3.0.
org.apache.commons.lang.enums	Provides an implementation of the C style enum in the Java world.
org.apache.commons.lang.exception	Provides JDK 1.4 style Nested Exception functionality for those on prior Java versions.
org.apache.commons.lang.math	Extends java.math for business mathematical classes.
org.apache.commons.lang.mutable	Provides typed mutable wrappers to primitive values and Object.
org.apache.commons.lang.text	Provides classes for handling and manipulating text, partly as an extension to java.text.
org.apache.commons.lang.time	Provides classes and methods to work with dates and durations.