Operations on arrays, primitive arrays (like int[]) and primitive wrapper arrays (like Integer[]).

Operations on bit-mapped fields.

Operations on boolean primitives and Boolean objects.

Character encoding names required of every implementation of the Java platform.

A contiguous range of characters, optionally negated.

A set of characters.

Operations on CharSets.

Operations on char primitives and Character objects.

Operates on classes without using reflection.

Represents a range of Number objects.

Provides extra functionality for Java Number classes.

Operations on Object.

Class used as a null placeholder where null has another meaning.

Operations for random Strings.

Assists with the serialization process and performs additional functionality based on serialization.

Escapes and unescapes Strings for Java, Java Script, HTML, XML, and SQL.

Operations on String that are null safe.

Helpers for java.lang.System.

Assists in validating arguments.

Operations on Strings that contain words.

Thrown when an object is an instance of an unexpected type (a class or interface).

Thrown to indicate an incomplete argument to a method.

Thrown to indicate that a block of code has not been implemented.

Thrown to indicate that an argument was null and should not have been.

Exception thrown when the Serialization process fails.

Thrown when it is impossible or undesirable to consume or throw a checked exception.