The installer is looking for Java, does it really need it to work correctly ?
Java is not needed for OpenOffice.org to work correctly. However there will be some features which will not be available without it. For example, with 1.1 you will not be able to use the XSLT functionality, JDBC, applets, form generators, and Java Application Programming Interfaces (APIs) for 3rd party modules, if no Java is installed.