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Before installing be sure on what's your plan and your 1 - Java Environment.
Run the following commands in order to install or update the Oracle Java. The idea is applicable to others JVM.
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sudo add-apt-repository ppa:webupd8team/java sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886 sudo apt-get update sudo apt-get install oracle-java8-installer |
The installer takes a while since it needs to download the latest Java installer from the Oracle site.
Then check your 1 - Java Environment. A jinfo should exist populated with your appropriate commands, tools or libraries including a unique priority number.
The Install your new JVM through the update-alternatives mechanism.
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export J2SDKDIR=/usr/lib/jvm/default-java export J2REDIR=/usr/lib/jvm/default-java/jre export PATH=$PATH:/usr/lib/jvm/default-java/bin:/usr/lib/jvm/default-java/db/bin:/usr/lib/jvm/default-java/jre/bin:$PATH export JAVA_HOME=/usr/lib/jvm/default-java export DERBY_HOME=/usr/lib/jvm/default-java/db |
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setenv J2SDKDIR /usr/lib/jvm/default-java setenv J2REDIR /usr/lib/jvm/default-java/jre setenv PATH ${PATH}:/usr/lib/jvm/default-java/bin:/usr/lib/jvm/default-java/db/bin:/usr/lib/jvm/default-java/jre/bin:${PATH} setenv JAVA_HOME /usr/lib/jvm/default-java setenv DERBY_HOME /usr/lib/jvm/default-java/db |
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The installer fetches the latest Java binary via wget.
Most of the time, the download fails because either the firewall blocks it or because the cacher doesn't allow it.
Since Java updates are not very frequent, we can turn off the firewall while installing, but the cacher can at least be configured for a permanent bypass.
Create /etc/apt/apt.conf.d/03java-bypass with the following contents:
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This will ensure that downloads from download.oracle.com initiated by pre/post-install scripts do not go through the cacher.
The ideal solution would be to make them cached but that needs a regex hack for apt-cacher-ng (to stop it from rejecting this site as a cacheable source) which I was not able to develop yet.
A workaround has been found for this problem:
According to this http://askubuntu.com/a/503992
One can add the following pattern in the acng.conf file.
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PfilePattern = .*(\.d?deb|\.rpm|\.drpm|\.dsc|\.tar(\.gz|\.bz2|\.lzma|\.xz)(\.gpg|\?AuthParam=.*)?|\.diff(\.gz|\.bz2|\.lzma|\.xz)|\.jigdo|\.template|changelog|copyright|\.udeb|\.debdelta|\.diff/.*\.gz|(Devel)?ReleaseAnnouncement(\?.*)?|[a-f0-9]+-(susedata|updateinfo|primary|deltainfo).xml.gz|fonts/(final/)?[a-z]+32.exe(\?download.*)?|/dists/.*/installer-[^/]+/[0-9][^/]+/images/.*)$ |
However the trick is to help acng to send a HTTP cookie with each and every request so the following pattern is also necessary in acng.conf:
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RequestAppendix: Cookie: oraclelicense=a |
Auto accept license
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echo oracle-java9-installer shared/accepted-oracle-license-v1-1 select true | sudo /usr/bin/debconf-set-selections |
or
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echo oracle-java8-installer shared/accepted-oracle-licence-v1-1 boolean true | sudo /usr/bin/debconf-set-selections |
Architecture
If your host architecture differs from LTSP chroot, you won't be able to install Java this way. Chrooting will make the chroot report the host's architecture to the installer, which causes it to download the wrong binary. Generally, chroots should be kept the same architecture as host, but if they must be different, one can still install Java this way if live-boot from the correct architecture media is done and chroot is entered from it.
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Plugin
In some cases, the presence of IcedTea Java Browser plugin (OpenJRE implementation) will prevent Oracle Java plugin from working or even being installed.
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Note: Oracle Java will not work in Google Chrome (since Google changed the plugin implementation system from previous standard) until Oracle issues an updated plugin.As we see in the the Java Environment Tutorial the jinfo file is able to register the plugin support. However we do not use this mechanism.
This tutorial only use the Oracle Firefox Java support while Chrome and Chromium do not any more support.
Rather than using the jinfo file to register the plugin support we use the symobic link technics. Do you not forget to update it when upgrading.In the jinfo file we introduced in the Java Environment Tutorial there are some plugin support described:
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#plugin xulrunner-1.9-javaplugin.so /usr/lib/jvm/java-8-oracle/jre/lib/i386/libnpjp2.so
plugin firefox-javaplugin.so /usr/lib/jvm/java-8-oracle/jre/lib/i386/libnpjp2.so
#plugin iceape-javaplugin.so /usr/lib/jvm/java-8-oracle/jre/lib/i386/libnpjp2.so
#plugin iceweasel-javaplugin.so /usr/lib/jvm/java-8-oracle/jre/lib/i386/libnpjp2.so
#plugin mozilla-javaplugin.so /usr/lib/jvm/java-8-oracle/jre/lib/i386/libnpjp2.so
#plugin midbrowser-javaplugin.so /usr/lib/jvm/java-8-oracle/jre/lib/i386/libnpjp2.so
#plugin xulrunner-javaplugin.so /usr/lib/jvm/java-8-oracle/jre/lib/i386/libnpjp2.so |
Only the Firefox Java plugin support is in use.
In the update-alternatives we Install only the Firefox Java plugin :
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#sudo update-alternatives --install /usr/lib/xulrunner-addons/plugins/libjavaplugin.so xulrunner-1.9-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so 1073;
sudo update-alternatives --install /usr/lib/firefox-addons/plugins/firefox-javaplugin.so firefox-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so 1073;
#sudo update-alternatives --install /usr/lib/iceape/plugins/iceape-javaplugin.so iceape-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so 1073;
#sudo update-alternatives --install /usr/lib/iceweasel/plugins/iceweasel-javaplugin.so iceweasel-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so 1073;
#sudo update-alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so mozilla-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so 1073;
#sudo update-alternatives --install /usr/lib/midbrowser/plugins/midbrowser-javaplugin.so midbrowser-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so 1073;
#sudo update-alternatives --install /usr/lib/xulrunner-addons/plugins/libjavaplugin.so xulrunner-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so 1073; |
Once you have installed the Firefox Java plugin support you should see the following link:
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sudo mkdiruser@machine:/usr/lib/firefox-addons/plugins$ ls -pal /usr/lib/firefox-addons/plugins cd /usr/lib/firefox-addons/plugins sudo ln -s / total 8 drwxr-xr-x 2 root root 4096 Jul 13 10:26 . drwxr-xr-x 6 root root 4096 Aug 18 2012 .. lrwxrwxrwx 1 root root 39 Jul 13 10:26 firefox-javaplugin.so -> /etc/alternatives/firefox-javaplugin.so |
Then test your Firefox configuration with Test Java.
In the update-alternatives we Remove only the Firefox Java plugin :
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#sudo update-alternatives --remove xulrunner-1.9-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so;
sudo update-alternatives --remove firefox-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so;
#sudo update-alternatives --remove iceape-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so;
#sudo update-alternatives --remove iceweasel-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so;
#sudo update-alternatives --remove mozilla-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so;
#sudo update-alternatives --remove midbrowser-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so;
#sudo update-alternatives --remove xulrunner-javaplugin.so /usr/lib/jvm/default-java/jre/lib/i386/libnpjp2.so |
Then test your Firefox configuration with Test Java.
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Once you have removed the Firefox Java plugin support no more symlink should exist:
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user@machine:/usr/lib/jvm/tools$ ls -al /usr/lib/firefox-addons/plugins/
total 8
drwxr-xr-x 2 root root 4096 Jul 13 11:07 .
drwxr-xr-x 6 root root 4096 Aug 18 2012 .. |
Reference
http://www.webupd8.org/2015/02/install-oracle-java-9-in-ubuntu-linux.html