$ wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie;" http://download.oracle.com/otn-pub/java/jdk/7u65-b17/jdk-7u65-linux-x64.tar.gz
$ sudo update-alternatives --get-selections | grep ^java
java manual /usr/lib/jvm/java-8-oracle/jre/bin/java
javac manual /usr/lib/jvm/java-8-oracle/bin/javac