cd Downloads && tar xvzf ~/Downloads/jre-7u17-linux-x64.tar.gz

su -p 

mkdir -p -v /opt/java/64

mv -v ~/Downloads/jre1.7.0_17 /opt/java/64


update-alternatives --install "/usr/bin/java" "java" "/opt/java/64/jre1.7.0_17/bin/java" 1


update-alternatives --set java /opt/java/64/jre1.7.0_17/bin/java

mkdir -v ~/.mozilla/plugins

rm -v ~/.mozilla/plugins/libnpjp2.so

ln -s /opt/java/64/jre1.7.0_17/lib/amd64/libnpjp2.so ~/.mozilla/plugins/