Refresh Your Java - Before Java Interview
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Consider a scenario where we have a huge database
table with (say 1 million records),
and the requirement
is to display those records in your application UI, how could
we
do this.
The challenge in this is
that Querying DB tables with huge set of records it will take
more
time to iterate the records from DB and more over
we get OutOfMemory error if
we load
such a huge ResultSet into JVM memory.
To avoid these kind
of issues, better set the ResultSet
FetchSize to
appropriate number
so that your JDBC Statement would
fetch only that number of records.
rs.setFetchSize(fetchSize);
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