As mentioned in the installation overview section, when choosing the download package you have to option to download one with a JRE or one without a JRE. If you have chosen a Win32, Linux or Solaris installer that does not include a JRE or the Generic Unix installer you need to ensure that a compatible Java JDK or JRE installation exists prior to running the installer. Any JRE or JDK 1.2 or later can be used although the recommended version is 1.6.

The installer assumes that JRE or JDK is configured correctly and can be executed by opening a console/shell and typing the following command: