remove-openjdk-and-install-oracle-jdk on ubuntu

In this blog post, I will show you how to remove openjdk and install oracle jdk on ubuntu.

Step-1: Download oracle JDK

Download from here

Step-2: Remove existing openjdk

sudo apt-get purge openjdk-\*

Step-3: Create directory for java installation

sudo mkdir -p /usr/local/java

Step-4: Copy & unzip to the install directory

sudo cp -r jdk-8u21-linux-x64.tar.gz /usr/local/java/

sudo tar xvzf jdk-8u21-linux-x64.tar.gz

Step-5: Setup path in bashrc

JAVA_HOME=/usr/local/java/jdk1.8.0_21
PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
export JAVA_HOME
export PATH

Step-6: Update alternatives for run time

sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/java/jdk1.8.0_21/bin/java" 1
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/local/java/jdk1.8.0_21/bin/javac" 1
sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/local/java/jdk1.8.0_21/bin/javaws" 1

Step-7: Update alternatives for jdk

sudo update-alternatives --set java /usr/local/java/jdk1.8.0_21/bin/java
sudo update-alternatives --set javac /usr/local/java/jdk1.8.0_21/bin/javac
sudo update-alternatives --set javaws /usr/local/java/jdk1.8.0_21/bin/javaws

Step-8: Refresh profile

source /etc/profile