Installing Java on Ubuntu

Installing Java on Ubuntu

#Step 1 Download the latest zipped JDK from Oracle's website , most probably you will get it downloaded into Downloads directory

#Step 2 Extract the zipped jdk file in the Downloads directory, follow below commands

cd ~/Downloads
tar -xzf jdk-8u121-linux-x64.tar.gz

#Step 3 Move the extracted jdk directory inside /usr/local directory, follow below command

sudo mv ~/Downloads/jdk1.8.0_121 /usr/local/

#Step 4 Update the alternatives, follow below commands

sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/jdk1.8.0_121/bin/java" 1

sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/local/jdk1.8.0_121/bin/javac" 1

#Step 5 Next create the JAVA_HOME variable and add the path of Java executables to PATH variable, 
        to do that open the .bashrc file and add following three lines at the end of .bashrc file
        
export JAVA_HOME="/usr/local/jdk1.8.0_121"
set PATH="$JAVA_HOME/bin:$PATH"
export PATH        


Yup thats it !!!