OpenJDK 8 Documentation

Package Description

Contains classes related to developing beans -- components based on the JavaBeans™ architecture.


Provides classes and interfaces relating to bean context.

Provides for system input and output through data streams, serialization and the file system.


Provides classes that are fundamental to the design of the Java programming language.


Provides library support for the Java programming language annotation facility.


Provides services that allow Java programming language agents to instrument programs running on the JVM.


The java.lang.invoke package contains dynamic language support provided directly by the Java core class libraries and virtual machine.

Provides the management interfaces for monitoring and management of the Java virtual machine and other components in the Java runtime.


Provides reference-object classes, which support a limited degree of interaction with the garbage collector.


Provides classes and interfaces for obtaining reflective information about classes and objects.


Provides classes for performing arbitrary-precision integer arithmetic (BigInteger) and arbitrary-precision decimal arithmetic (BigDecimal).

Provides the classes for implementing networking applications.


Defines buffers, which are containers for data, and provides an overview of the other NIO packages.


Defines channels, which represent connections to entities that are capable of performing I/O operations, such as files and sockets; defines selectors, for multiplexed, non-blocking I/O operations.


Service-provider classes for the java.nio.channels package.


Defines charsets, decoders, and encoders, for translating between bytes and Unicode characters.


Service-provider classes for the java.nio.charset package.


Defines interfaces and classes for the Java virtual machine to access files, file attributes, and file systems.


Interfaces and classes providing access to file and file system attributes.


Service-provider classes for the java.nio.file package.

Provides the classes and interfaces for the security framework.

The classes and interfaces in this package have been superseded by classes in the package.

Provides classes and interfaces for parsing and managing certificates, certificate revocation lists (CRLs), and certification paths.

Provides interfaces for generating RSA (Rivest, Shamir and Adleman AsymmetricCipher algorithm) keys as defined in the RSA Laboratory Technical Note PKCS#1, and DSA (Digital Signature Algorithm) keys as defined in NIST's FIPS-186.

Provides classes and interfaces for key specifications and algorithm parameter specifications.


Provides classes and interfaces for handling text, dates, numbers, and messages in a manner independent of natural languages.


Service provider classes for the classes in the java.text package.


The main API for dates, times, instants, and durations.


Generic API for calendar systems other than the default ISO.


Provides classes to print and parse dates and times.


Access to date and time using fields and units, and date time adjusters.

Support for time-zones and their rules.


Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).


Utility classes commonly useful in concurrent programming.


A small toolkit of classes that support lock-free thread-safe programming on single variables.


Interfaces and classes providing a framework for locking and waiting for conditions that is distinct from built-in synchronization and monitors.


Functional interfaces provide target types for lambda expressions and method references.


Provides classes for reading and writing the JAR (Java ARchive) file format, which is based on the standard ZIP file format with an optional manifest file.


Provides the classes and interfaces of the JavaTM 2 platform's core logging facilities.


This package allows applications to store and retrieve user and system preference and configuration data.


Classes for matching character sequences against patterns specified by regular expressions.


Service provider classes for the classes in the java.util package.

Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections.

Provides classes for reading and writing the standard ZIP and GZIP file formats.


Facilities for declaring annotation processors and for allowing annotation processors to communicate with an annotation processing tool environment.


Provides the classes and interfaces for cryptographic operations.


Provides interfaces for Diffie-Hellman keys as defined in RSA Laboratories' PKCS #3.


Provides classes and interfaces for key specifications and algorithm parameter specifications.


The main package of the Java Image I/O API.


A package of the Java Image I/O API dealing with synchronous notification of events during the reading and writing of images.


A package of the Java Image I/O API dealing with reading and writing metadata.


Package containing the public classes used by the built-in BMP plug-in.


Classes supporting the built-in JPEG plug-in.


A package of the Java Image I/O API containing the plug-in interfaces for readers, writers, transcoders, and streams, and a runtime registry.

A package of the Java Image I/O API dealing with low-level I/O from files and streams.


Classes and hierarchies of packages used to model the Java programming language.


Interfaces used to model elements of the Java programming language.


Interfaces used to model Java programming language types.


Utilities to assist in the processing of program elements and types.

Provides the core classes for the Java Management Extensions.

Provides the classes which implement advanced dynamic loading.

Provides the definition of the ModelMBean classes.

Provides the definition of the monitor classes.

Provides the open data types and Open MBean descriptor classes.

Provides the definition of the Relation Service.

Interfaces for remote access to JMX MBean servers.

The RMI connector is a connector for the JMX Remote API that uses RMI to transmit client requests to a remote MBean server.

Provides the definition of the Timer MBean.


Provides the classes and interfaces for accessing naming services.

Extends the javax.naming package to provide functionality for accessing directory services.


Provides support for event notification when accessing naming and directory services.


Provides support for LDAPv3 extended operations and controls.


Provides classes for networking applications.

Provides classes for the secure socket package.


Provides the principal classes and interfaces for the JavaTM Print Service API.


Provides classes and interfaces that describe the types of JavaTM Print Service attributes and how they can be collected into attribute sets.


Package javax.print.attribute.standard contains classes for specific printing attributes.


Package javax.print.event contains event classes and listener interfaces.


The scripting API consists of interfaces and classes that define Java TM Scripting Engines and provides a framework for their use in Java applications.

This package provides a framework for authentication and authorization.

This package provides the classes necessary for services to interact with applications in order to retrieve information (authentication data including usernames or passwords, for example) or to display information (error and warning messages, for example).

This package contains utility classes related to the Kerberos network authentication protocol.

This package provides a pluggable authentication framework.

This package provides the interface to be used for implementing pluggable authentication modules.

This package contains the classes that should be used to store X500 Principal and X500 Private Credentials in a Subject.

Provides classes for public key certificates.

Contains class and interfaces for supporting SASL.


Provides interfaces and classes for I/O, sequencing, and synthesis of MIDI (Musical Instrument Digital Interface) data.


Supplies interfaces for service providers to implement when offering new MIDI devices, MIDI file readers and writers, or sound bank readers.


Provides interfaces and classes for capture, processing, and playback of sampled audio data.


Supplies abstract classes for service providers to subclass when offering new audio devices, sound file readers and writers, or audio format converters.

Provides interfaces for tools which can be invoked from a program, for example, compilers.

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
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