Disable Java
To prevent OpenOffice from using Java:
In OpenOffice-Enterprise/Java
set Disable OpenOffice Java use to enabled
This setting can be testing by running OpenOffice and trying the menu item File -> Wizards -> Letter. OpenOffice should respond with an error message titled "JRE required".
When disabling Java, you may also wish to hide the user configuration dialog for Java located in OpenOffice under Tools -> Options -> OpenOffice -> Java. For instructions, see Hide configuration options.