Package org.apache.commons.lang

Provides highly reusable static utility methods, chiefly concerned with adding value to the java.lang classes.

Since:

1.0

Most of these classes are immutable and thus thread-safe. However Charset is not currently guaranteed thread-safe under all circumstances.

Class Summary

Class	Description
ArrayUtils	Operations on arrays, primitive arrays (like int[]) and primitive wrapper arrays (like Integer[]).
BitField	Operations on bit-mapped fields.
BooleanUtils	Operations on boolean primitives and Boolean objects.
CharEncoding	Character encoding names required of every implementation of the Java platform.
CharRange	A contiguous range of characters, optionally negated.
CharSet	A set of characters.
CharSetUtils	Operations on CharSets.
CharUtils	Operations on char primitives and Character objects.
ClassUtils	Operates on classes without using reflection.
LocaleUtils	Operations to assist when working with a Locale.
NumberRange	Deprecated. Use one of the Range classes in org.apache.commons.lang.math.
NumberUtils	Deprecated. Moved to org.apache.commons.lang.math.
ObjectUtils	Operations on Object.
ObjectUtils.Null	Class used as a null placeholder where null has another meaning.
RandomStringUtils	Operations for random Strings.
SerializationUtils	Assists with the serialization process and performs additional functionality based on serialization.
StringEscapeUtils	Escapes and unescapes Strings for Java, Java Script, HTML, XML, and SQL.
StringUtils	Operations on String that are null safe.
SystemUtils	Helpers for java.lang.System.
Validate	This class assists in validating arguments.
WordUtils	Operations on Strings that contain words.

Exception Summary

Exception	Description
IllegalClassException	Thrown when an object is an instance of an unexpected type (a class or interface).
IncompleteArgumentException	Thrown to indicate an incomplete argument to a method.
NotImplementedException	Thrown to indicate that a block of code has not been implemented.
NullArgumentException	Thrown to indicate that an argument was null and should not have been.
SerializationException	Exception thrown when the Serialization process fails.
UnhandledException	Thrown when it is impossible or undesirable to consume or throw a checked exception.