Creating and closing statements

Question

Hi
I am new 2 JDBC and have a few doubts,
I need 2 move forward and backwards in the resultset, i am using the following declaration for that
stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
can i use the same declaration for the resultsets where i only need 2 move forward?
also i use different functions for running different queries, should i create n close statements seperately in each function, or should i create statement once n for all wen im loading the driver and use that in all da functions?
thanks a ton!

Answer 1

You can use it but before using it for second time. you have to make it null.No. No. No. Setting it to null does nothing particularly good for you. it makes the object eligible for garbage collection, which is going to happen anyway as soon as the Statement is reused.
You need to call close() before reusing a Statement (or PreparedStatement).
If your code has any chance of ever being used in a multi-threaded environment (such as a web service), then you should use local Statement objects. There are also a lot of good design reasons for making them local, but for a single-threaded application, you certainly could use a single global Statement.