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 3000update-alternatives –config java爱的力量大到可以使人忘记一切,却又小到连一粒嫉妒的沙石也不能容纳