File is a file in IFS.
Here is a more complete piece of code. The Java program reads a text file
from a directory and places is on a queue (MQ).
There is nothing to do with stdin, and sometimes it works.
This runs on a OS400 5.4 , JVM 1.4.

FileInputStream fstream = new FileInputStream(file);

if (fstream.available() > Integer.MAX_VALUE)
   System.out.println("File '" + file + "' is too big.");
int buffersize = fstream.available();
byte[] contents = new byte[buffersize];;

long n =, 0, buffersize);
fstream = null;
if (n != buffersize)
  System.out.println("Error in reading file '" + file + "'");
message = new String(contents);

from: David Gibbs <david@xxxxxxxxxxxx>
subject: Re: strange Java error message

Shalom Carmel wrote:
> FileInputStream fstream = new FileInputStream(file);
> The program is submitted to batch.
> I am getting occasional error messages
> Read from stdin not allowed in batch
> <snip>
> This never happens when the code is executed interactively.

The error seems pretty self explanatory to me ... stdin (which appears
to be basic keyboard input in this context) is only available when a
program is run interactively.  When you run in batch, stdin isn't

What's the value of 'file'?


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