| java.applet | Provides the classes necessary to create an applet and the classes an applet uses to communicate with its applet context. |
| java.awt | Contains all of the classes for creating user interfaces and for painting graphics and images. |
| java.awt.color | Provides classes for color spaces. |
| java.awt.datatransfer | Provides interfaces and classes for transferring data between and within applications. |
| java.awt.dnd | Drag and Drop is a direct manipulation gesture found in many Graphical User Interface systems that provides a mechanism to transfer information between two entities logically associated with presentation elements in the GUI. |
| java.awt.dnd.peer | Provides for interfacing with the underlying window system in order to access its platform-dependent drag-and-drop facilities. |
| java.awt.event | Provides interfaces and classes for dealing with different types of events fired by AWT components. |
| java.awt.font | Provides classes and interface relating to fonts. |
| java.awt.geom | Provides the Java 2D classes for defining and performing operations on objects related to two-dimensional geometry. |
| java.awt.im | Provides classes and interfaces for the input method framework. |
| java.awt.im.spi | Provides interfaces that enable the development of input methods that can be used with any Java runtime environment. |
| java.awt.image | Provides classes for creating and modifying images. |
| java.awt.image.renderable | Provides classes and interfaces for producing rendering-independent images. |
| java.awt.peer | Provides for interfacing with the underlying window system. |
| java.awt.print | Provides classes and interfaces for a general printing API. |
| java.beans | Contains classes related to developing beans -- components based on the JavaBeans TM architecture. |
| java.beans.beancontext | Provides classes and interfaces relating to bean context. |
| java.io | Provides for system input and output through data streams, serialization and the file system. |
| java.lang | |
| java.lang.annotation | Core classes including wrappers for primitive types, classes, packages and class loaders, representations of the system, processes, threads and the core exception hierarchy. |
| java.lang.instrument | Provides services that allow Java programming language agents to instrument programs running on the JVM. |
| java.lang.management | Provides the management interface for monitoring and management of the Java virtual machine as well as the operating system on which the Java virtual machine is running. |
| java.lang.ref | Provides reference-object classes, which support a limited degree of interaction with the garbage collector. |
| java.lang.reflect | |
| java.math | |
| java.net | Provides the classes for implementing networking applications. |
| java.nio | Defines buffers, which are containers for data, and provides an overview of the other NIO packages. |
| java.nio.channels | 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. |
| java.nio.channels.spi | Service-provider classes for the java.nio.channels package. |
| java.nio.charset | Defines charsets, decoders, and encoders, for translating between bytes and Unicode characters. |
| java.nio.charset.spi | Service-provider classes for the java.nio.charset package. |
| java.rmi | Provides the RMI package. |
| java.rmi.activation | Provides support for RMI Object Activation. |
| java.rmi.dgc | Provides classes and interface for RMI distributed garbage-collection (DGC). |
| java.rmi.registry | Provides a class and two interfaces for the RMI registry. |
| java.rmi.server | Provides classes and interfaces for supporting the server side of RMI. |
| java.security | Provides the classes and interfaces for the security framework. |
| java.security.acl | The classes and interfaces in this package have been superseded by classes in the java.security package. |
| java.security.cert | Provides classes and interfaces for parsing and managing certificates, certificate revocation lists (CRLs), and certification paths. |
| java.security.interfaces | 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. |
| java.security.spec | Provides classes and interfaces for key specifications and algorithm parameter specifications. |
| java.sql | Provides the API for accessing and processing data stored in a data source (usually a relational database) using the Java TM programming language. |
| java.text | Provides classes and interfaces for handling text, dates, numbers, and messages in a manner independent of natural languages. |
| java.text.spi | Service provider classes for the classes in the java.text package. |
| java.util | 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). |
| java.util.concurrent | |
| java.util.concurrent.atomic | |
| java.util.concurrent.locks | |
| java.util.jar | 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. |
| java.util.logging | Provides the classes and interfaces of the Java TM 2 platform's core logging facilities. |
| java.util.prefs | This package allows applications to store and retrieve user and system preference and configuration data. |
| java.util.regex | Classes for matching character sequences against patterns specified by regular expressions. |
| java.util.spi | Service provider classes for the classes in the java.util package. |
| java.util.zip | Provides classes for reading and writing the standard ZIP and GZIP file formats. |
| javax.accessibility | Defines a contract between user-interface components and an assistive technology that provides access to those components. |
| javax.activation | The JavaBeans(TM) Activation Framework is used by the JavaMail(TM) API to manage MIME data. |
| javax.annotation | |
| javax.annotation.processing | |
| javax.annotation.security | |
| javax.crypto | Provides the classes and interfaces for cryptographic operations. |
| javax.crypto.interfaces | Provides interfaces for Diffie-Hellman keys as defined in RSA Laboratories' PKCS #3. |
| javax.crypto.spec | Provides classes and interfaces for key specifications and algorithm parameter specifications. |
| javax.imageio | The main package of the Java Image I/O API. |
| javax.imageio.event | A package of the Java Image I/O API dealing with synchronous notification of events during the reading and writing of images. |
| javax.imageio.metadata | A package of the Java Image I/O API dealing with reading and writing metadata. |
| javax.imageio.plugins.bmp | Package containing the public classes used by the built-in BMP plug-in. |
| javax.imageio.plugins.jpeg | Classes supporting the built-in JPEG plug-in. |
| javax.imageio.spi | A package of the Java Image I/O API containing the plug-in interfaces for readers, writers, transcoders, and streams, and a runtime registry. |
| javax.imageio.stream | A package of the Java Image I/O API dealing with low-level I/O from files and streams. |
| javax.jws | |
| javax.jws.soap | |
| javax.lang.model | |
| javax.lang.model.element | |
| javax.lang.model.type | |
| javax.lang.model.util | |
| javax.management | Provides the core classes for the Java Management Extensions. The Java Management Extensions (JMX TM ) API is a standard API for management and monitoring. |
| javax.management.j2ee | Provides the J2EE Management Enterprise Bean component (MEJB) interfaces. |
| javax.management.j2ee.statistics | Provides the standard interfaces for accessing performance data from J2EE managed objects Package Specification JSR 77, J2EE Management Related Documentation For overviews, tutorials, examples, guides, and tool documentation, please see: J2EE Tools |