An operator is asked to verify the exact location of the default JRE binary. The following commands were run:
$ which java /usr/bin/java
$ ls -l /usr/bin/java
lrwxrwxrwx 1 root other 23 Jan 27 2006 /usr/bin/java -> ../jre1.5.0_06/bin/java
Based on the command outputs above, what is the path to the java executable file?（）