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Message:

Runtime.getRuntime().exec

Posted by sasi on April 26, 2000 at 6:26 PM

Hi,
I was trying to run a batch file from my program, so I did the following:
public static void main (String []args) {
/*
Threadtest t = new Threadtest();
t.start();*/
testrun();
}

public static void testrun () {
BufferedReader br = null;
BufferedReader br2 = null;
Process p = null;
int status = -1;
try {
String osName = System.getProperty("os.name");
if (osName.compareTo("Windows NT") == 0) {
//String []test = "cmd.exe", "/c", "runtest.bat");
p = Runtime.getRuntime().exec("cmd.exe /c runtest.bat ");
}
br = new BufferedReader(new InputStreamReader(p.getErrorStream()));
String s;
while ((s = br.readLine())!= null) {
System.out.println(s);
}
br2 = new BufferedReader(new InputStreamReader(p.getInputStream()));
while ((s = br2.readLine())!= null) {
System.out.println(s);
}
br.close();
br2.close();
}catch (IOException ioex) {ioex.printStackTrace();}
//return 0;
}
Now, this starts the dos prompt, and then the program waits on it.
It only continues after I kill the dos prompt. Is there any way that I can start the process and then forget about it?
I dont want to have any control after spawning off the process.
Could anyone help me with this problem?
Thanks
Sasipriya

• using runtime.exec in a jsp Doug February 20, 2002 at 4:50 PM (0)
• Try this Amit August 27, 2001 at 1:51 PM (0)
• Same problem with JSP Ritu S Parihar May 02, 2001 at 7:12 AM (2)
  • ur answer Manoj September 06, 2001 at 4:21 AM (0)
  • ur answer Manoj September 06, 2001 at 4:20 AM (0)
• Same problem with JSP Ritu S Parihar May 02, 2001 at 7:11 AM (0)
• Same problem with JSP Ritu S Parihar May 02, 2001 at 7:10 AM (0)
• Same problem with JSP Ritu S Parihar May 02, 2001 at 7:09 AM (0)
• use byte buffer instead of char buffer Nathan Cho January 12, 2001 at 8:58 PM (1)
  • java applet problem Muhammad Ali April 25, 2001 at 1:27 AM (0)
• Runtime exec Hien Tran June 12, 2000 at 2:23 PM (13)
  • running a shell script from rm.exec() in java varaprasad May 16, 2001 at 8:32 AM (0)
  • i think this is the absolute solution to run a batch file through java sasipriya April 16, 2001 at 8:02 AM (5)
    • Java Program Does not Exit parag November 29, 2001 at 1:49 AM (0)
    • Its not working sravan kumar October 05, 2001 at 12:56 AM (0)
    • Thanks Sasipriya Amit August 27, 2001 at 1:49 PM (1)
      • unable to run 'javac' command thorugh another java file. Dhananjay December 01, 2001 at 11:03 AM (0)
    • THANKS!!! Doug April 17, 2001 at 5:43 PM (0)
  • runtine hugo denis Oliveros monti March 23, 2001 at 11:27 AM (0)
  • This WORKED David Genrich January 20, 2001 at 11:10 AM (1)
    • Problem in getRuntime() Ashish September 11, 2001 at 8:37 AM (0)
  • Thanks for the example Kavitha Dhevi January 03, 2001 at 2:49 PM (0)
  • spawning Win NT command prompt hangs Srini July 13, 2000 at 3:13 PM (1)
    • cmd hangs parag November 03, 2000 at 9:25 AM (0)