ubuntu指定默认jdk

将我要添加的jdk加入java菜单选项

update-alternatives --install /usr/bin/java java /usr/lib/jvm/java/jdk1.6.0_12/bin/java 300
update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java/jdk1.6.0_12/bin/javac 300

修改默认JDK

sudo 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-6-openjdk/jre/bin/java   1061      auto mode
  1            /usr/lib/jvm/java-6-openjdk/jre/bin/java   1061      manual mode
  2            /usr/lib/jvm/java-6-sun/jre/bin/java       63        manual mode


Press enter to keep the current choice[*], or type selection number: 2    

 

 

选择java-6-sun后，再输入java -version，就会显示Sun的JDK信息了