Section 9.1. Common Java SE API Libraries

Part II: Platform

Java Platform, SE

Development Basics

Basic Input and Output

Java Collections Framework

Generics Framework

Concurrency

Memory Management

The Java Scripting API

Third-Party Tools

UML Basics

Chapter 9. Java Platform, SE

The Java Platform, Standard Edition includes the Java Runtime Environment (JRE) and its encompassing Java Development Kit (JDK) (see Chapter 10), the Java Programming Language, Java Virtual Machines (JVMs), tools/utilities, and the Java SE API libraries; see Figure 9-1.

Figure 9-1. Java Platform, SE

9.1. Common Java SE API Libraries

Java SE API 6 standard libraries are provided within packages of which there are more than 200 available. Each package is made up of classes and/or interfaces. An abbreviated list of commonly used packages is represented here.

9.1.1. Language and Utility Libraries

java.lang

Language support; system/math methods, fundamental types, strings, threads, and exceptions

java.lang.annotation

Annotation framework; metadata library support

java.lang.instrument

Program instrumentation; agent services to instrument JVM programs

java.lang.management

Java Management Extensions API; JVM monitoring and management

java.lang.ref

Reference-object classes; interaction support with the GC

java.lang.reflect

Reflective information about classes and objects

java.util

Utilities; collections, event model, date/time, and international support

java.util.concurrent

Concurrency utilities; executors, queues, timing, and synchronizers

java.util.concurrent.atomic

Atomic toolkit; lock-free thread-safe programming on single variables

java.util.concurrent.locks

Locking framework; locks and conditions

java.util.jar

Java Archive file format; reading and writing

java.util.logging

Logging; failures, errors, performance issues, and bugs

java.util.prefs

User and system preferences; retrieval and storage

java.util.regex

Regular expressions; char sequences matched to patterns

java.util.zip

ZIP and GZIP file formats; reading and writing

9.1.2. Base Libraries

java.applet

Applet Framework; embeddable window and control methods

java.beans.beancontext

Bean context; containers for beans, run environments

java.beans

Beans; components based on JavaBeans™, long-term persistence

java.io

Input/Output; through data streams, the filesystem, and serialization

java.math

Mathematics; extra large integer and decimal arithmetic

java.net

Networking; TCP, UDP, sockets, and addresses

java.nio.channels

Channels for I/O; selectors for non-blocking I/O

java.nio.charset

Characters sets; translation between bytes and Unicode

java.nio

High performance I/O; buffers, memory mapped files

java.text

Text utilities; text, dates, numbers, and messages

javax.annotation

Annotation types; library support

javax.management

JMX API; application configuration, statistics, and state changes

javax.net.ssl

Secured sockets layer; error detection, data encryption/ authentication

javax.net

Networking; socket factories

javax.tools

Program invoked tool interfaces; compilers, file managers

9.1.3. Integration Libraries

java.sql

Standard Query Language; access and processing data source information

javax.jws.soap

Java web services; SOAP bindings and message parameters

javax.jws

Java web services; supporting annotation types

javax.naming.directory

Directory services; Java Naming and Directory Interface (JNDI) operations for directory-stored objects

javax.naming.event

Event services; JNDI event notification operations

javax.naming.ldap

Lightweight Directory Access Protocol v3; operations and controls

javax.naming

Naming services; JNDI

javax.script

Scripting language support; integration, bindings, and invocations

javax.sql.rowset.serial

Serializable mappings; between SQL types and data types

javax.sql.rowset

Java Database Connectivity (JDBC) Rowset; standard interfaces

javax.sql

Standard Query Language; database APIs and server-side capabilities

javax.transactions.xa

XA Interface; transaction and resource manager contracts for JTA

9.1.4. User Interface Libraries: Miscellaneous

javax.accessibility

Accessibility technology; assistive support for UI components

javax.imageio

Java image I/O; image file content description (metadata, thumbnails)

javax.print

Print services; formatting and job submissions

javax.print.attribute

Java Print Services; attributes and attribute sets collecting

javax.print.attribute.standard

Standard attributes; widely used attributes and values

javax.print.event

Printing events; services and print job monitoring

javax.sound.midi

Sound; I/O, sequencing, and synthesis of MIDI Types 0 and 1

javax.sound.sampled

Sound; sampled audio data (AIFF, AU, and WAV formats)

9.1.5. User Interface Libraries: Abstract Window Toolkit (AWT) API

java.awt

Abstract Window Toolkit; user interfaces, graphics, and images

java.awt.color

AWT color spaces; International Color Consortium Profile Format Specs

java.awt.datatransfer

AWT data transfers; between/within applications, clipboard support

java.awt.dnd

AWT drag and drop; direct GUI manipulation gestures

java.awt.event

AWT event listeners/adapters for events fired by AWT components

java.awt.font

AWT fonts; Type 1, Open Type fonts; True Type fonts

java.awt.geom

AWT geometry manipulation; two-dimensional support

java.awt.im

AWT input method framework; text input, languages, and handwriting

java.awt.image

AWT image streaming framework; image creation and modification

java.awt.image.renderable

AWT rendering-independent images; production

java.awt.print

AWT printing API; doc type specs, controls page setup/ formats

9.1.6. User Interface Libraries: Swing API

javax.swing

Swing API; pure Java components (buttons, split panes, tables, etc.)

javax.swing.border

Swing specialized borders; customized versus default Look-and-Feel borders

javax.swing.colorchooser

Swing JColorChooser component support; color selection dialog box

javax.swing.event

Swing events; event listeners and event adapters

javax.swing.filechooser

Swing JFileChooser component support; filesystem dialog box

javax.swing.plaf

Swing Pluggable Look-and-Feel; support for basic and Metal Look-and-Feels

javax.swing.plaf.basic

Swing Basic Look-and-Feel; default Look-and-Feel behavior

javax.swing.plaf.metal

Swing Metal Look-and-Feel; Metal/Steel Look-and-Feel

javax.swing.plaf.multi

Swing Multiple Look-and-Feel; combines multiple Look-and-Feels

javax.swing.plaf.synth

Swing Skinnable Look-and-Feel; all painting is delegated

javax.swing.table

Swing JTable component support; tabular data structures

javax.swing.text

Swing text component support; editable and noneditable text components

javax.swing.text.html

Swing HTML text editors; HTML text editor creation support

javax.swing.text.html.parser

Swing HTML parsers; default HTML parser support

javax.swing.text.rtf

Swing Rich-Text-Format text editors; editing support

javax.swing.tree

Swing JTree component support; construction, management, and rendering

javax.swing.undo

Swing undo/redo operations; text component support

9.1.7. Remote Method Invocation (RMI) and CORBA Libraries

java.rmi

Remote Method Invocation; invokes objects on remote JVMs

java.rmi.activation

RMI Object Activation; activates persistent remote object's references

java.rmi.dgc

RMI distributed garbage-collection (DGC); remote object tracking from client

java.rmi.registry

RMI registry; remote object that maps names to remote objects

java.rmi.server

RMI server side; RMI Transport protocol, HTTP tunneling, stubs

javax.rmi

Remote Method Invocation; RMI-IIOP, IIOP, JRMP

javax.rmi.CORBA

CORBA support; portability APIs for RMI-IIOP and ORBs

javax.rmi.ssl

Secured Sockets Layer; RMI client and serversupport

org.omg.CORBA

OMG CORBA; CORBA to Java mapping, ORBs

org.omg.CORBA_2_3

OMG CORBA additions; further JCK test support

9.1.8. Security Libraries

java.security

Security; algorithms, mechanisms, and protocols

java.security.cert

Certifications; parsing, managing CRLS and certification paths

java.security.interfaces

Security interfaces; RSA and DSA key generation

java.security.spec

Specifications; security keys and algorithm parameters

javax.crypto

Cryptographic operations; encryption, keys, MAC generations

javax.crypto.interfaces

Diffie-Hellman keys; defined in RSA Laboratories' PKCS #3

javax.crypto.spec

Specifications; for security key and algorithm parameters

javax.security.auth

Security authentication and authorization; access controls specifications

javax.security.auth.callback

Authentication callback support; services interaction with apps

javax.security.auth.kerberos

Kerberos network authentication protocol; related utility classes

javax.security.auth.login

Login and configuration; pluggable authentication framework

javax.security.auth.x500

X500 Principal and X500 Private Credentials; subject storage

javax.security.sasl

Simple Authentication and Security Layer; SASL authentication

org.ietf.jgss

Java Generic Security Service; authentication, data integrity

9.1.9. Extensible Markup Language (XML) Libraries

javax.xml

Extensible Markup Language (XML); constants

javax.xml.bind

XML runtime bindings; unmarshalling, marshalling, and validation

javax.xml.crypto

XML cryptography; signature generation and data encryption

javax.xml.crypto.dom

XML and DOM; cryptographic implementations

javax.xml.crypto.dsig

XML digital signatures; generating and validating

javax.xml.datatype

XML and Java data types; mappings

javax.xml.namespace

XML namespaces; processing

javax.xml.parsers

XML parsers; SAX and DOM parsers

javax.xml.soap

XML; SOAP messages; creation and building

javax.xml.transform

XML transformation processing; no DOM or SAX dependency

javax.xml.transform.dom

XML transformation processing; DOM-specific API

javax.xml.transform.sax

XML transformation processing; SAX-specific API

javax.xml.transform.stax

XML transformation processing; StAX-specific API

javax.xml.validation

XML validation; verification against XML schema

javax.xml.ws

Java API for XML Web services (JAX-WS); core APIs

javax.xml.ws.handler

JAX-WS message handlers; message context and handler interfaces

javax.xml.ws.handler.soap

JAX-WS; Simple Object Access Protocol (SOAP) message handlers

javax.xml.ws.http

JAX-WS; Hypertext Transfer Protocol (HTTP) bindings

javax.xml.ws.soap

JAX-WS; SOAP bindings

javax.xml.xpath

XPath expressions; evaluation and access

org.w3c.dom

W3C's Document Object Model (DOM); file content and structure access and updates

org.xml.sax

XML.org's Simple API for XML (SAX); file content and structure access and updates