* Disclaimer - this text represents the contents of the README.html file included in Java SE 5.0u20. As these contents are dated, some links may no longer be valid.
Thank you for downloading this release of the JavaTM2 Platform Standard Edition Development Kit (JDKTM). The JDK is a development environment for building applications, applets, and components using the Java programming language.
The JDK includes tools useful for developing and testing programs written in the Java programming language and running on the Java platform. These tools are designed to be used from the command line. Except for the appletviewer, these tools do not provide a graphical user interface.
System requirements, installation instructions and troubleshooting tips are located on the Java Software web site at:
Development Tools
(In the bin
subdirectory.) Tools and utilities that will help you develop, execute, debug, and document programs written in the Java programming language.
Runtime Environment
(In the jre
subdirectory.) An implementation of the J2SE runtime environment for use by the JDK. The runtime environment includes a Java virtual machine, class libraries, and other files that support the execution of programs written in the Java programming language.
Additional Libraries
(In the lib
subdirectory.) Additional class libraries and support files required by the development tools.
Demo Applets and Applications
(In the demo
subdirectory.) Examples, with source code, of programming for the Java platform. These include examples that use Swing and other Java Foundation Classes, and the Java Platform Debugger Architecture.
Source Code
(In src.zip
.) Java programming language source files for all classes that make up the Java 2 core API (that is, sources files for the java.*, javax.* and some org.* packages, but not for com.sun.* packages). This source code is provided for informational purposes only, to help developers learn and use the Java programming language. These files do not include platform-specific implementation code and cannot be used to rebuild the class libraries. To extract these file, use any common zip utility. Or, you may use the Jar utility in the JDK's bin
directory:
jar xvf src.zip
The J2SE Runtime Environment
The J2SE Runtime Environment is available as a separately downloadable product.
The J2SE Runtime Environment allows you to run applications written in the Java programming language. Like the JDK, it contains the Java virtual machine, classes comprising the Java 2 Platform API, and supporting files. Unlike the JDK, it does not contain development tools such as compilers and debuggers.
You can freely redistribute the J2SE Runtime Environment with your application, according to the terms of the Runtime Environment's license. Once you have developed your application using the JDK, you can ship it with the Runtime Environment so your end-users will have a Java platform on which to run your software.
NOTE - The license for this software does not allow the redistribution of beta and other pre-release versions. |
Subject to the terms and conditions of the Software License Agreement and the obligations, restrictions, and exceptions set forth below, You may reproduce and distribute the Software (and also portions of Software identified below as Redistributable), provided that:
The term "vendors" used here refers to licensees, developers, and independent software vendors (ISVs) who license and distribute the J2SE Development Kit with their programs.
Vendors must follow the terms of the J2SE Development Kit Binary Code License agreement.
The following section contains a list of the files and directories that may optionally be omitted from redistributions of the JDK. All files not in these lists of optional files must be included in redistributions of the JDK.
The following files may be optionally excluded from redistributions. These files are located in the jdk1.5.0_<version> directory, where <version> is the update version number. Solaris and Linux filenames and separators are shown. Windows executables have the ".exe" suffix. Corresponding files with _g
in name can also be excluded.
jre/lib/charsets.jar
Character conversion classes
jre/lib/ext/
sunjce_provider.jar
- the SunJCE provider for Java Cryptography APIs
localedata.jar
- contains many of the resources needed for non US English locales
ldapsec.jar
- contains security features supported by the LDAP service provider
dnsns.jar
- for the InetAddress wrapper of JNDI DNS provider
bin/rmid
and jre/bin/rmid
Java RMI Activation System Daemon
bin/rmiregistry
and jre/bin/rmiregistry
Java Remote Object Registry
bin/tnameserv
and jre/bin/tnameserv
Java IDL Name Server
bin/keytool
and jre/bin/keytool
Key and Certificate Management Tool
bin/kinit
and jre/bin/kinit
Used to obtain and cache Kerberos ticket-granting tickets
bin/klist
and jre/bin/klist
Kerberos display entries in credentials cache and keytab
bin/ktab
and jre/bin/ktab
Kerberos key table manager
bin/policytool
and jre/bin/policytool
Policy File Creation and Management Tool
bin/orbd
and jre/bin/orbd
Object Request Broker Daemon
bin/servertool
and jre/bin/servertool
Java IDL Server Tool
bin/javaws
, jre/bin/javaws
, jre/lib/javaws/
and jre/lib/javaws.jar
Java Web Start
src.zip
Archive of source files
The limited set of files from the JDK listed below may be included in vendor redistributions of the J2SE Runtime Environment. They cannot be redistributed separately, and must accompany a JRE distribution. All paths are relative to the top-level directory of the JDK.
jre/lib/cmm/PYCC.pf
Color profile. This file is required only if one wishes to convert between the PYCC color space and another color space.
All .ttf
font files in the jre/lib/fonts
directory.
Note that the LucidaSansRegular.ttf font is already contained in the J2SE Runtime Environment, so there is no need to bring that file over from the JDK.
jre/lib/audio/soundbank.gm
This MIDI soundbank is present in the JDK, but it has been removed from the J2SE Runtime Environment in order to reduce the size of the Runtime Environment's download bundle. However, a soundbank file is necessary for MIDI playback, and therefore the JDK's soundbank.gm
file may be included in redistributions of the Runtime Environment at the vendor's discretion. Several versions of enhanced MIDI soundbanks are available from the Java Sound web site. These alternative soundbanks may be included in redistributions of the J2SE Runtime Environment.
The javac bytecode compiler, consisting of the following files:
bin/javac
[Solaris(TM) Operating System and Linux]
bin/sparcv9/javac
[Solaris Operating System (SPARC(R) Platform Edition)]
bin/amd64/javac
[Solaris Operating System (AMD)]
bin/javac.exe
[Microsoft Windows]
lib/tools.jar
[All platforms]
The Annotation Processing Tool, consisting of the following files:
bin/apt
[Solaris(TM) Operating System and Linux]
bin/sparcv9/apt
[Solaris Operating System (SPARC(R) Platform Edition)]
bin/amd64/apt
[Solaris Operating System (AMD)]
bin/apt.exe
[Microsoft Windows]
jre\bin\server\
On Microsoft Windows platforms, the JDK includes both the Java HotSpot Server VM and Java HotSpot Client VM. However, the J2SE Runtime Environment for Microsoft Windows platforms includes only the Java HotSpot Client VM. Those wishing to use the Java HotSpot Server VM with the J2SE Runtime Environment may copy the JDK's jre\bin\server
folder to a bin\server
directory in the J2SE Runtime Environment. Software vendors may redistribute the Java HotSpot Server VM with their redistributions of the J2SE Runtime Environment.
<java-home>/lib/security/local_policy.jar
<java-home>/lib/security/US_export_policy.jar
<java-home>
is the jre
directory of the JDK or the top-level directory of the J2SE Runtime Environment.
An unlimited strength version of these files indicating no restrictions on cryptographic strengths is available on the JDK web site for those living in eligible countries. Those living in eligible countries may download the unlimited strength version and replace the strong cryptography jar files with the unlimited strength files.
jconsole.jar
jconsole may be redistributed outside the JDK but only with Sun's JRE.
Classes in the packages listed on that web page may be replaced only by classes implementing a more recent version of the API as defined by the appropriate standards body.
In addition to the packages listed in the document at the above URL, which are part of the Java 2 Platform Standard Edition (J2SETM) specification, redistributors of Sun's J2SE Reference Implementation are allowed to override classes whose sole purpose is to implement the functionality provided by public APIs defined in these Endorsed Standards packages. Redistributors may also override classes in the org.w3c.dom.*
packages, or other classes whose sole purpose is to implement these APIs.
<java-home>/lib/security/cacerts
.