Re: different try-finally approach

"Mike Schilling" <>
Tue, 4 Aug 2009 00:33:17 -0700
Bill McCleary wrote:

Lew wrote:

Pitch wrote:

Now, look at this one:

public void copyFiles(String inFile, String outFile)
throws IOException
    FileInputStream inStream = new FileInputStream(inFile);
        copyToFile(inStream, outFile);

private void copyToFile(InputStream inStream, String outFile)
throws IOException
    FileOutputStream outStream = new FileOutputStream(inFile);
        // copying code...

Eh. This approach breaks up the logic so it's harder to see that
input and output streams are tightly coupled. It adds lines of
source code without appreciably improving clarity, perhaps even
going the other way. It puts streams that are at the same logic
level in the algorithm into different subroutine levels in the
It factors the algorithm in a conceptually jarring way.

Except, of course, if the same program downloads files from the web
otherwise obtains them. And then having the copying logic in just
place, to save to a file from an arbitrary input stream, becomes a
big win.

Agreed, though they shouldn't be private methods; they should be
public static methods in a common utility class.

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