I want to use geometry fields in postgresql or postgis extension(like point,line,polygon,...).
I know that I must use usertype interface.
But geometry types dont exist in java.sql.Types,and I dont know which type must be use in "sqlTypes()".
Furthermore I dont now how I can implement "nullSafeGet()".
I've looked everywhere but cant find an explanantion or example. Any help is appreciated.

Thanks

Look at the Caveat Emptor example application (follow the link from home page).