How-to installa Java 8 on Debian system.
For Java 7 check this tutorial
System up-to-date
Keep the system up-to-date by running:
# apt-get update # apt-get upgrade
Download JAVA 8
Always get the latest JAVA version from here and make sure you tune the URLs/Paths in the commands as well. I’ll try to keep the article up-to-date but just don’t relay on that 🙂
for 64bit system, use the following command to download JAVA JDK8
# wget --no-cookies \ --no-check-certificate \ --header "Cookie: oraclelicense=accept-securebackup-cookie" \ "http://download.oracle.com/otn-pub/java/jdk/8u5-b13/jdk-8u5-linux-x64.tar.gz" \ -O /tmp/jdk-8-linux-x64.tar.gz
for 32bit system use the following instead:
# wget --no-cookies \ --no-check-certificate \ --header "Cookie: oraclelicense=accept-securebackup-cookie" \ "http://download.oracle.com/otn-pub/java/jdk/8u5-b13/jdk-8u5-linux-i586.tar.gz" \ -O /tmp/jdk-8-linux-i586.tar.gz
Installing JAVA 8
Unpack the downloaded JAVA 8 archive in /opt
mkdir /opt/java-oracle
for 64bit system, use:
# tar -zxf /tmp/jdk-8-linux-x64.tar.gz -C /opt/java-oracle
for 32bit system, use:
# tar -zxf /tmp/jdk-8-linux-i586.tar.gz -C /opt/java-oracle
Setting-up JAVA 8
Set-up Oracle’s JAVA 8 to be used on the system by using higher priority with update-alternatives
# JHome=/opt/java-oracle/jdk1.8.0_05
# update-alternatives --install /usr/bin/java java ${JHome%*/}/bin/java 20000
# update-alternatives --install /usr/bin/javac javac ${JHome%*/}/bin/javac 20000
re-check ${JHome} is set to the correct directory
Verify or set Oracle’s JAVA 8 to be used as a default JAVA on the system
# update-alternatives --config java
check JAVA version using
# java -version
Enabling browser JAVA 8 plugin
to enable JAVA plugin in chrome/chromium, do
# mkdir /opt/google/chrome/plugins # ln -sf /opt/java-oracle/jdk1.8.0_05/jre/lib/amd64/libnpjp2.so /opt/google/chrome/plugins/
to achieve the same in firefox run
# test ! -d /usr/lib/firefox-addons/plugins && mkdir -p /usr/lib/firefox-addons/plugins # ln -sf /opt/java-oracle/jdk1.8.0_05/jre/lib/amd64/libnpjp2.so /usr/lib/firefox-addons/plugins/libnpjp2.so
