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To install the default Web Browser Plugin on your system, run:

apt-get install icedtea-plugin

Note: The Java Web Browser Plugin technology will be deprecated starting with Java 9 Oracle announcement

JRE

To install the default JRE (Java Runtime Environment) on your system, run:

apt-get install default-jre

JDK

To install the default JDK (Java Development Kit) on your system, run:

apt-get install default-jdk

자바 그리고 데비안

Debian provides several Java implementations. Each of them have a development environment (JDK) and a runtime (known as JRE, or Java Virtual Machines JVM). Here's a list of Java environment. Just run aptitude search "?provides(java-runtime)" on your system to list available packages).

The default JRE/JDK installed in Debian isn't the same for all architecture. Check the dependency of the package default-jdk (or run apt-cache depends default-jdk on a system).

Origin	Spec.	Packages	Plugin	Free	Comments
OpenJDK	v8	JRE:openjdk-8-jre JDK:openjdk-8-jdk	icedtea-8-plugin	yes	Default Java for stretch on ports where it is available. Also available on jessie-backports (but no plugin).
OpenJDK	v7	JRE:openjdk-7-jre JDK:openjdk-7-jdk	icedtea-7-plugin	yes	Default Java for jessie and wheezy on ports where it is available.
OpenJDK	v6	JRE:openjdk-6-jre JDK:openjdk-6-jdk	icedtea-6-plugin	yes	Also available on wheezy.
GNU's GCJ	v5	JRE:gcj-jre JDK:gcj-jdk	no	yes	Default Java on ports where OpenJDK is not available.
Sun Java				no	No longer available in Debian due to license reasons. Debian, however, provides an helper to generate Debian packages from upstream tarballs. WARNING: there is no way to get automatic security updates. Remember to manually check for updates and generate and install the updated pacakges!

자바 가상 패키지 이름 이해

There are several virtual packages used in Debian for Java. These cover runtime compatibility and come in two flavours; headless (omits graphical interfaces) and normal. A dependency on javaX-runtime means that the package can work with any runtime which implements version X. Runtimes should provide all virtual packages which they support, so openjdk 6 provides java2-runtime, java5-runtime and java6-runtime.

java1-runtime, java2-runtime, java5-runtime, java6-runtime
java1-runtime-headless, java2-runtime-headless, java5-runtime-headless, java6-runtime-headless

Switching

Most java-related executables, multiple of which can be installed at any time, are managed by the 'alternatives' system. Instead of managing each alternative separately, you can update them all in one go with 'update-java-alternatives' from java-common

개발자 - 데비안에서 자바 패키징 작업

일반정보 그리고 조정

Java/Packaging - Tools for packaging Java apps and libraries in Debian
Java/Goals
Java/Rebuilds
Packaging Community
- Debian Java Packaging Project @ Alioth
- Debian Java List
- #debian-java
- Teams/JavaPackaging pre-unstable/experimental repository
Java/DevJam -> Developer Java Meeting
Java/JavaVcs - general guidelines for using version control systems
Java/JavaSvn - how to use SVN to package Java stuff
Java/JavaGit - how to use GIT to package Java stuff
Java/QATools - ideas and tools for QA in our Java World
Java/ConfigurationStandard - WIP/RFC about the handling of common configuration options for Java applications

Work on specific application packages

Java/RequestedPackages - Apps people want to see packaged and which are in the process of being packaged.
http://www.debian.org/devel/wnpp/requested
http://www.debian.org/devel/wnpp/being_packaged

TODO(wiki consolidation): maybe everything should be moved from here to Java/RequestedPackages?

사용자 문서

Debian Java FAQ outside of this wiki
JavaFAQ - in this wiki, only one question so far
Java in the Webbrowser:
- Mozilla (Java section - obsolete, install one of the plugin packages from the table above).
- TestJava