Re: catching exceptions in a catch block

"Mike Schilling" <>
Mon, 8 Jun 2009 23:44:37 -0700
crazy fo sheezy wrote:

Hi. I have this piece of code here:

try {
} catch (Exception e) {
PrintWriter pw = new PrintWriter(new BufferedWriter(new
FileWriter("c:\ \foo.log")));

The problem I'm having is that the code in the catch block could
an IOException, FileNotFound for example. I want to be able to log
all errors in a log file. So, my first thought was to try to wrap
everything in the catch block within its own try/catch. But then,
since I want to log all errors to a log file, I'll need to
another PrintWriter in the second catch block (see below). If I
going, then I just end up with a bunch nested try/catches with no
in sight.

You have to accept that you can't easily log errors caused by being
unable to write to the log file. Given this, you can write a logging

    public class Log
            private String logFile;

            public void logException(Exception ex)
                         PrintWriter pw = new PrintWriter(new
BufferedWriter(new FileWriter(logFile));
                    catch (Exception ex)
                        ; // what can you do?

and use this class to do all your logging. if you decide to, say,
have another file that collects all first-level logging errors, append
to it in the catch block (and ingore errors writing to it.) What
might work even better is to use a logging framework that handles all
of this for you, say java.util.logging.

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