RE: [Jython-users] arguments

[Updike, C. <Cla...@jh...>]

One piece of advice regarding that article--the author's code for
the GoodWinRedirect class contains the following snippet:


// kick them off
errorGobbler.start();
outputGobbler.start();
                                    
// any error???
int exitVal = proc.waitFor();
System.out.println("ExitValue: " + exitVal);


I was having intermittent failures using this code until I joined
the "gobbler" threads before exiting the method:


// kick them off
errorGobbler.start();
outputGobbler.start();
                                    
// any error???
int exitVal = proc.waitFor();
System.out.println("ExitValue: " + exitVal);

//ADD THIS:
// make sure all the stream output has been processed before proceeding
errorGobbler.join();
outputGobbler.join();


I'm guessing that in some cases the gobbler threads hadn't finished
their processing before the method was exiting and the buffers were
empty as a result.

-Clark 

On Thu, 20 Nov 2003, mike wrote:

<snip>
and JavaWorld has written a very good article about its traps (and how to
avoid them...  *grin*):

    http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html