Execute DOS command from Java Code
Hi All
I am developing a Java application where I am launching some external Windows application on click event of a button.
I am able to launch that application, but now I have to keep a check that if once that application is launched on clicking the button, then next time it should not launch. But if user exits that external application, then on clicking the button that application should be launched. I tried several ways but i am not able to keep track of that process which makes that application run. The major problem is that when that application is being launched and running, i don't have anything to read or write to that process's Input Stream or Output Stream. Can any one help me out in this????
ApratimSharma wrote:
You Might not get anything in the inputstream.read but when the external application will exit you will definitely get EOF (int -1). However Important thing here is that inputstream.read is a blocking call so better do it in a separate thread.
Runtime runtime = Runtime.getRuntime();
try {
Process process = runtime.exec("calc");
InputStream inputStream = process.getInputStream();
if (inputStream != null) {
System.out.println("Running");
while (inputStream.read() != -1);
System.out.println("Exited");
} catch (Exception e) {
e.printStackTrace();
}Now that is what I call 'stating the obvious' !
You need to read the 4 sections of [http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html|http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html] and implement ALL the recommendations.
Edited by: sabre150 on Oct 8, 2009 10:00 AM
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I am currently working on a code wherein i need to execute Linux command from Java. Below are some of the query i have.
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**-- Java Version**
java version "1.6.0"
OpenJDK Runtime Environment (build 1.6.0-b09)
OpenJDK Server VM (build 1.6.0-b09, mixed mode)
-- Program Code ----
Where <path> = Path i put myself
package test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.*;
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------Output -------------
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--- Code ---
package test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.*;
public class GetInode{
* @param args
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/usr/bin/stat: cannot stat `"/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt"': No such file or directory
Error :- null
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/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt 12003 24 81a4 453166 10000 1c 360466554 2 0 1 1246638450 1246638450 1246638450 4096
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DSVAS_DOC_WS_EXECUTE_50
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CL_GUI_FRONTEND_SERVICES=>EXECUTE
<b><REMOVED BY MODERATOR></b>
Thanks & Regards
ilesh 24x7
Message was edited by:
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