java 경로 확인

# alternatives --config java
There is 1 program that provides 'java'.
  Selection    Command
-----------------------------------------------
*+ 1           /usr/lib/jvm/jre-1.6.0-sun/bin/java
Enter to keep the current selection[+], or type selection number:

Then try to execute Java:

$ java -version

You should get:

java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) Client VM (build 11.0-b16, mixed mode, sharing)