HOWTO install the rjb gem on Ubuntu and Mac OS X

Here’s how to install the Ruby Java Bridge (rjb) gem on Ubuntu Linux and Mac OS X:

# aptitude install openjdk-6-jre-headless openjdk-6-jdk
# JAVA_HOME=/usr/lib/jvm/java-6-openjdk gem install rjb

# JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Home gem install rjb

Note: rjb 1.3.2 requires the Java for Mac OS X 10.6 Update 3 Developer Package. If you don’t want to download it, you can use 1.3.1:

JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Home gem install rjb -v=1.3.1

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8 Comments

Raza says:

September 29, 2010 at 1:04 am

Thanks saved my time.
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loomer says:

March 27, 2011 at 9:38 pm

Thank you. I was fighting this for an hour.
Exoria says:

May 10, 2011 at 2:11 am

Thanks a lot
Chthonic says:

September 21, 2011 at 11:12 am

In spite of doing this, I still get the error “JAVA_HOME is not set”.
paul says:

September 21, 2011 at 11:20 am

What shell are you using? If you’re using csh/tcsh, you may have to use setenv instead.
jeet says:

December 18, 2012 at 3:26 am

Thank yoou so much..that saved a lot of time
Brice says:

July 30, 2018 at 4:27 am

Thanks a lot, I used on High Sierra:

# JAVA_HOME=/System/Library/Frameworks/JavaVM.framework gem install rjb