Install JDK in Ubuntu

sudo mv ***/jdk /usr/lib/jvm/jdk1.7.0
ln /usr/lib/jvm/jdk1.7.0 /usr/lib/jvm/jdk


PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/lib/jvm/jdk/bin"
CLASSPATH=".:/usr/lib/jvm/jdk/lib"
JAVA_HOME="/usr/lib/jvm/jdk/jre"

. /etc/environment