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The following must be considered when using the
ResultSet
interface:
Before reading any values, you must call
next()
. This returns true if there is a
result, but more importantly, it prepares the row for
processing.
You must close a ResultSet
by calling
close()
once you have finished using it.
Once you make another query with the
Statement
used to create a
ResultSet
, the currently open
ResultSet
instance is closed
automatically.