update-alternatives --install /usr/bin/java java /usr/lib/jvm/java/bin/java  3000

update-alternatives --install /usr/bin/jps jps /usr/lib/jvm/java/bin/jps  3000

update-alternatives --install /usr/bin/jstack jstack /usr/lib/jvm/java/bin/jstack  3000

update-alternatives --config java