Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

Chapter 16. java.util and Subpackages

This chapter documents the java.util package, and
each of its subpackages. Those packages are:

java.util

This package defines many important and
commonly used utility classes, the most important of which are the
various Collection, Set,
List, and Map implementations.
In Java 5.0 the collection classes and interfaces have been converted
into generic types.

java.util.concurrent

This package includes utilities for
concurrent programming, including
threadsafe collection classes, threadpool implementations, and
synchronizer utilities.

java.util.concurrent.atomic

This package includes classes that
define atomic operations on primitive values
or object references.

java.util.concurrent.locks

This
package contains low-level lock and condition utilities.

java.util.jar

This package defines classes for reading and writing
JAR (Java ARchive) files. They are
based on the classes of the java.util.zip package.

java.util.logging

This package defines a powerful and flexible
logging API for Java applications.

java.util.prefs

This package allows applications to set and query persistent values
for user-specific
preferences or system-wide
configuration parameters.

java.util.regex

This package defines an API for textual pattern matching using
regular expressions.

java.util.zip

This package defines classes for reading and writing

ZIP files and for compressing and
uncompressing data using the "gzip"
format.