우분투]Java(jdk)의 버전이 여러개일때 선택해서 사용하기

# update-alternatives --config java
There are 2 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                     Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/java-7-oracle/jre/bin/java   64        auto mode
  1            /usr/lib/jvm/java-6-sun/jre/bin/java      63        manual mode
  2            /usr/lib/jvm/java-7-oracle/jre/bin/java   64        manual mode

Press enter to keep the current choice[*], or type selection number: 1
update-alternatives: using /usr/lib/jvm/java-6-sun/jre/bin/java to provide /usr/bin/java (java) in manual mode.


*표가 선택된 것이다..

참 쉽다.