spring - Void means(V is capital) -

getjdbctemplate().query(getfilecontentsql, new rowmapper<void>() {     public void maprow(resultset rs, int rownum) throws sqlexception {         oraclelobhandler lobhandler = new oraclelobhandler();         inputstream inputstream = lobhandler.getblobasbinarystream(rs, "file_content");         exlimporter importer = new exlbomimporter(inputstream);         importer.process();     } }, fileid); 

please tell me void ? note : v capital.

form javadoc:

the void class uninstantiable placeholder class hold reference class object representing java keyword void.