Forgive me if I missed these comments the first time around, but I noticed two small things.
1) In general we are not using the procedures in ProcedureTest but rather adding methods to the new test (NullSQLText)
stmt.execute("create procedure za() language java external name " +
" parameter style java");
2) We don't need to support JCC so the references to TestUtil.isJCCFramework() can be removed.