Catching exceptions in external programs

[Jason]

Hi,

I've written a java program which launches a seperate .exe file using
Runtime.getRuntime().exec("<path to executable>"). This executable
tends to be buggy so I'd like to catch exceptions it creates
(exceptions, memory errors, etc... not just stuff it writes to stderr)
and then write these to a log file.
Is this possible?

Thanks in advance,

Jason

 

[Steve W. Jackson]

:Hi,
:
:I've written a java program which launches a seperate .exe file using
:Runtime.getRuntime().exec("<path to executable>"). This executable
:tends to be buggy so I'd like to catch exceptions it creates
exceptions, memory errors, etc... not just stuff it writes to stderr)
:and then write these to a log file.
:Is this possible?
:
:Thanks in advance,
:
:Jason

In pure Java? Extremely unlikely.

= Steve =

 

[John C. Bollinger]

I've written a java program which launches a seperate .exe file using
Runtime.getRuntime().exec("<path to executable>"). This executable
tends to be buggy so I'd like to catch exceptions it creates
(exceptions, memory errors, etc... not just stuff it writes to stderr)
and then write these to a log file.
Is this possible?

Not in pure Java, as such. If the external program were another Java
program, then you could run it by invoking its main class'
main(String[]) method, and then you could catch whichever exceptions and
errors you wanted in the normal Java way, but you would have to put up
with the buggy program running in the same VM as the launcher.
Alternatively, you could start it in another VM and connect to that via
the debugging interface.

But if the external program is a native one, then you need to use native
facilities to do what you want. You could access these through JNI, if
you really need a Java facade over the top.


John Bollinger
(e-mail address removed)