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
