OsdeInfo: Open Java JDK JRE

http://openjdk.java.net/
http://www.java.com/en/download/linux_manual.jsp?locale=en&host=www.java.com:80
http://www.java.com/en/download/help/5000010500.xml#rpm

Open Java JDK JRE

Java Open Java Open JDK & JRE 1.6 and openjdk plugin are free libre open source replacements for Sun Java Java SE J2SE JDK JRE 6 !

(Note : Java Open Java Open JDK & JRE 1.6 and openjdk plugin 1.7 are also known as IcedTea !)

CentOS /OEL/RHEL Install

If you need open java to work inside firefox as a plugin then you must install the open java iced tea plugin from the CentOS Test repository
(which should also install the openjdk as a dependancy)

check centos-test is in your repo list

$ yum repolist
Loaded plugins: fastestmirror, priorities
repo id                                        repo name                                                 status
addons                                         CentOS-5 - Addons                                         enabled:     0
base                                           CentOS-5 - Base                                           enabled: 2,535
c5-test                                        CentOS-test                                               enabled:   714
extras                                         CentOS-5 - Extras                                         enabled:   325
updates                                        CentOS-5 - Updates                                        enabled:   263

OEL OpenJava OpenJDK remove

If you are using Oracle Enterprise Linux you will need to remove the Oracle Enterprise Linux openjava openjdk

# yum remove java-1.6.0-openjdk

CentOS /OEL/RHEL Install

Install openjava from the CentOS testing repository

# yum install java-1.6.0-openjdk-plugin

firefox about : plugins

If you dont need java to work in firefox you can just install open java on its own directly from the CentOS, OEL or RHEL repos

# yum install java-1.6.0-openjdk

you may need to remove any old javas such as gcj but this will break openoffice.org if you are using it

# yum remove java-1.4.2-gcj-compat

to prevent yum update rpm clashes conflicts you may need to add some exclude java-1.6.0-openjdk in your yum .repo files

[base]
name=CentOS-$releasever - Base
exclude=java-1.6.0-openjdk

[updates]
name=CentOS-$releasever - Updates
exclude=java-1.6.0-openjdk

Manual Install Open Java Open JDK Plugin

If your browser (FireFox) is installed in this directory:

/usr/lib/mozilla-1.4/

and if the Java is installed at this directory:

/usr/java/jre1.6.0

Then type at the terminal to go to the browser plug-in directory:

# cd /usr/lib/mozilla-1.4/plugins

and create a symbolic link to the Java Plug-in for the Mozilla browser.

# ln -s /usr/java/jre1.6.0/plugin/i386/ns7/libjavaplugin_oji.so .

Ed/X/Ubuntu Install

install open java

# aptitude install default-jdk

Test Java Plugin

Run firefox and navigate to http://www.java.com/en/download/installed.jsp?detect=jre&try=1

firefox sun java test page

note : do not update to sun java if you want to keep using the open java jdk

REFERRERS
FireFoxExtensions
ProgrammingLanguages