In Linux how to make environment variable for java and how to install jdk.......

Answer 1

sudo apt-get update
java -version
sudo apt-get install default-jre
sudo apt-get install default-jdk

sudo apt-get install openjdk-7-jre
sudo apt-get install openjdk-7-jdk

$echo JAVA_HOME

https://www.digitalocean.com/community/tutorials/how-to-install-java-on-ubuntu-with-apt-get

Answer 2

I get it