Note: This particular post is purely for my notes. So, I suggest you to visit the reference site 🙂
Java jdk installation
- Choose the jdk version from here
I have chosen jdk7 from here
- Accept the License and Download:
# wget --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/7u72-b14/jdk-7u72-linux-i586.tar.gz (OR) Download the tar file manually from here
- Install:
# mkdir /usr/java # tar -xvzf jdk-7u72-linux-i586.tar.gz -C /usr/java/ -
Setting Oracle JDK as the default JVM
# update-alternatives --install /usr/bin/java java /usr/java/jdk1.7.0_72/bin/java 100 # update-alternatives --install /usr/bin/javac javac /usr/java/jdk1.7.0_72/bin/javac 100 # update-alternatives --install /usr/bin/javaws javaws /usr/java/jdk1.7.0_72/bin/javaws 100 -
Verify that java has been successfully configured by running:
# update-alternatives --display java # update-alternatives --display javac # update-alternatives --display javaws -
Check installation:
# java -version -
Set the JAVA_HOME for all the users
#vim /etc/profile JAVA_HOME=/usr/java/jdk1.7.0_72 export PATH=$PATH:$JAVA_HOME/bin #source /etc/profile - Check JAVA_HOME for all the users
#echo $JAVA_HOME Output: /usr/java/jdk1.7.0_72
Java jdk uninstall
- Remove the link:
#update-alternatives --remove "java" "/usr/java/jdk1.7.0_72/bin/java" #update-alternatives --remove "javac" "/usr/java/jdk1.7.0_72/bin/javac" #update-alternatives --remove "javaws" "/usr/java/jdk1.7.0_72/bin/javaws" - Remove the java package
#rm -rf /usr/java/jdk1.7.0_72