Re: Alternative to System.runFinalizersOnExit()?

Twisted wrote:


     // WRONG:
     final OutputStream out = new BufferedOutputStream(
         new FileOutputStream(file)
     );
     try {
         ...
         out.flush();
     } finally {
         out.close();
     }

     // STILL WRONG (and daft):
     OutputStream out = null
     try {
         out = new BufferedOutputStream(
             new FileOutputStream(file)
         );
         ...
         out.flush();
     } finally {
         if (out == null) {
             out.close();
         }
     }

What if construction of the BufferedInputStream failed due to lack of
memory, or some other reason? Leak. Therefore:

     final OutputStream rawOut = new FileOutputStream(file);
     try {
         OutputStream out = new BufferedOutputStream(rawOut);
         ...
         out.flush(); // Also important, buffered or not.
     } finally {
         rawOut.close();
     }

It's a narrow window, but it could mean the difference between dying
under load or just suffering.

Tom Hawtin