CellarBoss is available both as source code and a pre-built executable jar file from the downloads page and also as source code from Subversion (for those who want the latest bugs fixes)
Prerequisites

• A properly installed Java6 JRE is all that is needed to run CellarBoss.
  CellarBoss has only been tested with the Java6 JRE provided by Sun
  
• For development you will need to install
  • Java6 JDK
    You can get this directly from java.com or (probably) from your favourite package manager (sun-java6-jdk for Ubuntu).
  • Derby java database
    Available from the Apache Derby site or (possibly) from your favourite package manager (sun-java6-javadb for Ubuntu).
  • Jasper Reports
    Available from Jasper Reports
  • Netbeans (recommended)
    I use NetBeans as my development environment so, if you would like to work on the code, it would probably be worth installing that too. There is also a plugin available from the Jasper Reports site that embeds the iReport report designer into NetBeans.

Installing the stand-alone program

• Download the CellarBoss.jar file from the downloads page.
  

Running the stand-alone program

• On most systems you should be able to run the program by double-clicking its icon in your file browser or from the command line with
  java -jar CellarBoss.jar
  On some systems the default application associated with .jar files is an archive manager.
  In this case you need to change the file association for .jar files to 'java -jar'.
  Usually the right-click menu will provide a way to achieve this.

Installing the source code

• Download the CellarBoss_src_n.n.n.zip source code package from the downloads page.
  Extract the files from the archive using your favourite zip tool or from the command line with
  unzip CellarBoss_src_n.n.n.zip
  This will create a directory called CELLARBOSS_n.n.n that is the base of the NetBeans project structure.
• or get the latest code from Subversion
  You should use the following command to just get the latest code ...
  svn co https://cellarboss.svn.sourceforge.net/svnroot/cellarboss/trunk cellarboss
  Leaving off the '/trunk' will download all the branches and tags that represent the different releases of the code. This is probably not what you want, but you are welcome to do so if you wish.