Solved

why would the output to the screen be different than output that is captured?

Posted on 2006-11-15
5
179 Views
Last Modified: 2012-05-05
i am using a 3rd party java app, so i dont know the internal workings of it.  i was trying to launch the app from a webservice powered by .NET, but for some reason, it doesnt work (although the app runs fine when launched manually).  one thing i noticed eventually, is that when you try to capture the out put (for instance using "> soemthing.txt" in DOS, the output that is captured is completely different than the output that the java app prints to the screen.  any ideas on how that could be possible?
0
Comment
Question by:trip008vk
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 92

Expert Comment

by:objects
ID: 17951244
is the java app displaying output from stdout?
0
 

Author Comment

by:trip008vk
ID: 17951285
i'm not sure.  in know nothing about the internal workings of it.  when i run it from the dos prompt, it prints out several lines to the command window.  when i redirect the output to a text file, it only writes one line (and this line is different form all the others!)
0
 
LVL 92

Expert Comment

by:objects
ID: 17951315
thats very strange, no idea why that would be happening.
0
 
LVL 6

Accepted Solution

by:
SamsonChung earned 125 total points
ID: 17956667
the output of the Java prog is sending to stderr.

what you want is the file redirected one.

not the one on your screen.

0
 
LVL 6

Expert Comment

by:SamsonChung
ID: 17956674
or, the author/designer of the program is smart enough to handle '> something.txt' in command line java.

try sending that to a linux system and see if the results are similar



0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
map related example 6 59
How to execute a Python program and gather return output in Java 2 49
runtime exception 2 50
Java syntax, or is it Selenium 6 37
For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
Viewers will learn one way to get user input in Java. Introduce the Scanner object: Declare the variable that stores the user input: An example prompting the user for input: Methods you need to invoke in order to properly get  user input:
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.

740 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question