How to setup java on freebsd?

I have both Java JRE and Java JDK on a FreeBSD 7.2 box (running PFSense) from http://www.freebsdfoundation.org/downloads/java.shtml

find / -name gives 开发者_StackOverflowme output like:
/usr/local/diablo-jre1.6.0/bin/java
/usr/local/diablo-jdk1.6.0/bin/java
/usr/local/diablo-jdk1.6.0/jre/bin/java

so I make a link to /usr/local/bin like so:

 ln /usr/local/diablo-jre1.6.0/bin/java /usr/local/bin/java

and now I get

# rehash
# java
Error: could not find libjava.so
Error: could not find Java 2 Runtime Environment.

SOOOOOO, I'm wondering if there is some tool I can use to turn on a particular java vm similar to Ubuntus' /etc/jvm?

The /usr/local/diablo-jre1.6.0/bin/java application probably locates libjava.so relative to the location of the java application itself. By creating a hard link to java and executing it via that hard link, you've probably broken that mechanism.

Suggestions:

• Put /usr/local/diablo-jre1.6.0/bin on your search path.
• Create an alias for java instead of a link.
• Replace the hard link with a symbolic link; i.e. use ln -s to create it.

The FreeBSD packages should have installed a wrapper-script in /usr/local/bin/java that knows about the different installed JVMs, and their JAVA_HOMEs etc. Did you by chance accidentally download the tarball instead of the package?

What does pkg_info | grep jdk yield?

If this is in a jail, you may need to move /proc temporarily so it doesn't try to use it to find out where the Java libraries are. Got bitten by this one!