RMI
- Remote Method Invocation information and resources.
- http://java.sun.com/javase/technologies/core/basic/rmi/

JFC
- Java Foundation Classes information and resources.
- http://java.sun.com/javase/technologies/desktop/

JDBC
- Java DataBase Connectivity information and resources.
- http://java.sun.com/javase/technologies/database/

The Java Virtual Machine Specification
- Documentation for Java "bytecode" class file format.
- http://java.sun.com/docs/books/jvms/

Java 2 Platform - Sun Community Source Licensing
- Sun's source code for their implementations of the Java 2 Platform, Standard Edition, available free of charge.
- http://www.sun.com/software/communitysource/j2se/java2/index.xml

Embedded Java
- Application environment home.
- http://java.sun.com/javase/embedded/

The Java Language Specification
- Sun's formal specification of the Java language (all versions). Online HTML, HTML in ZIP archive, and PDF formats.
- http://java.sun.com/docs/books/jls/

Java 1.4.2 API
- Complete on-line documentation for version 1.4.2 of Java
- http://java.sun.com/j2se/1.4.2/docs/api/

Official Java Programming Documentation: Quick Reference Guide
- Quick access to the official programming documentation for JDK 1.0-1.3, Sun Java tools, and related Java APIs.
- http://www.apl.jhu.edu/~hall/java/Documentation.html

JavaHelp
- Downloads, user's guide, FAQ, help authoring tools, and mailing list.
- http://java.sun.com/products/javahelp/index.html

Java Communications API
- Documentation, user's guide, FAQ, and implementation download.
- http://java.sun.com/products/javacomm/index.html

JTAPI
- Java Telephony API is used for controlling telephone calls from the Java programming language.
- http://java.sun.com/products/jtapi/

Java Look and Feel Design Guidelines
- Focuses on design issues and human-computer interaction in the context of the Java look and feel. Also attempts to provide a common vocabulary for designers, developers, and other professionals.
- http://java.sun.com/products/jlf/ed1/guidelines.html

The JAIN APIs
- White papers, FAQs, specifications for this set of next generation telecom products and services.
- http://java.sun.com/products/jain/

Javadoc
- Includes tool documentation, specification, announcement mailing list, and custom doclets.
- http://java.sun.com/j2se/javadoc/

Java Class Libraries Posters
- Poster from Sun giving an overall view of the classes in the Java 2 Platform (Enterprise Edition and Standard Edition).
- http://java.sun.com/docs/books/poster/

JavaBeans
- Java component architecture.
- http://java.sun.com/products/javabeans/

Glossary of Java Related Terms
- Glossary with Java applet search facility. A non-Java version is also available.
- http://java.sun.com/docs/glossary.html

Java 1.3 API
- Complete on-line documentation for version 1.3 of Java.
- http://java.sun.com/j2se/1.3/docs.html

Java Card
- Specifications which enable Java technology to run on smart cards and other devices with limited memory.
- http://java.sun.com/products/javacard/

Java Plug-in
- Formerly "Java Activator" -- replaces browser virtual machine with more recent runtime environment.
- http://java.sun.com/products/plugin/

Java IDL
- Java CORBA interface
- http://java.sun.com/products/jdk/idl/

Java Media Framework API
- Multimedia extensions for Java.
- http://java.sun.com/products/java-media/jmf/