In many cases, it is desirable to immediately release a
Statements's database and JDBC resources instead of waiting for
this to happen when it is automatically closed; the close
method provides this immediate release.
Execute a SQL INSERT, UPDATE or DELETE statement and signal the driver
with the given flag about whether the auto-generated keys produced by this
Statement object should be made available for retrieval.
getMoreResults moves to this Statements next result, deals with any
current ResultSet objects according to the instructions specified by the
given flag, and returns true is the next result is a ResultSet object.