The write once, run anywhere language is needed for a whole bunch of applications. Installing Java on FreeBSD is very straightforward. You can either choose to install the Open JDK or the Oracle JDK Java Development Kit. The OpenJDK Java Development Kit is the native port of OpenJDK to FreeBSD. The Oracle JDK Java Development Kit is a patchset of the JDK source code released by Oracle. This port builds a native JDK for FreeBSD.
su) or simply prepend sudo to all commands that require root privileges.Installing OpenJDK on FreeBSD
Navigate to the port directory and install Java with the following commands:
cd /usr/ports/java/openjdk6 make install clean; rehash
Installing Oracle JDK on FreeBSD
Navigate to the port directory and install Java with the following commands:
cd /usr/ports/java/jdk16 make install clean; rehash
Please note that with the Oracle JDK Java Development Kit you have to manually fetch the source code and patchset for FreeBSD.
Configure Java on FreeBSD
Once the SDK is installed, it is useful to add its location to the environment. Place the following lines in /etc/profile:
JAVA_HOME=/usr/ports/java/jdk16
export JAVA_HOME
CLASSPATH=.:${JAVA_HOME}jre/lib/rt.jar:\
${JAVA_HOME}jre/lib/javaplugin.jar:\
${JAVA_HOME}jre/lib/sunrsasign.jar
export CLASSPATH
Now you can check that everything runs just fine by typing java into the console.
