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IO Streams as parameters.

Qunfeng Wang
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Joined: Jan 28, 2005
Posts: 430
I wonder if it's a bad practice to use IO Streams as parameters, and how to walk around this.

Because it will raise a problem: where to close the stream? after the invoking or when the invoked method finished?


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Rajkamal Pillai
Ranch Hand

Joined: Mar 02, 2005
Posts: 443
    
    1

Hi,

I am not able to think of any performance related constraints regarding passing streams as parameters. IMHO, it is the responsibility of the block of code taht opened the resource connection/stream to take care of closing it, handling all exceptions thrown in the appropriate fashion during any operations performed on the same.

Thanks,
Raj.
Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19649
    
  18

Raj Kamal wrote:IMHO, it is the responsibility of the block of code taht opened the resource connection/stream to take care of closing it

I couldn't agree more. The called method that takes an InputStream doesn't know if it is still needed afterwards; perhaps it has a mark that allows the calling method to go back in the InputStream and do some more reading. If the called method closes it then the calling method will have a problem.


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