| Package | Description | 
|---|---|
| org.apache.commons.lang3 | Provides highly reusable static utility methods, chiefly concerned with adding value to the  java.langclasses. | 
| org.apache.commons.lang3.builder | Assists in creating consistent  equals(Object),toString(),hashCode(), andcompareTo(Object)methods. | 
| org.apache.commons.lang3.concurrent | Provides support classes for multi-threaded programming. | 
| org.apache.commons.lang3.event | Provides some useful event-based utilities. | 
| org.apache.commons.lang3.exception | Provides functionality for Exceptions. | 
| org.apache.commons.lang3.math | Extends  java.mathfor business mathematical classes. | 
| org.apache.commons.lang3.mutable | Provides typed mutable wrappers to primitive values and Object. | 
| org.apache.commons.lang3.reflect | Accumulates common high-level uses of the  java.lang.reflectAPIs. | 
| org.apache.commons.lang3.text |  Provides classes for handling and manipulating text, partly as an extension to  java.text. | 
| org.apache.commons.lang3.text.translate |  An API for creating text translation routines from a set of smaller building blocks. | 
| org.apache.commons.lang3.time | Provides classes and methods to work with dates and durations. | 
| org.apache.commons.lang3.tuple | Tuple classes, starting with a Pair class in version 3.0. | 
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