Runtime.exec() not working properly

[Kousik Majumder]

Hi all,

I am facing a typical behabiour when trying to run

 String cmd=  "C:/europ/batch\batch.bat _W _d 123";
Runtime.getRuntime().exec(cmd)

I have written the above code in a jsp file. Running the jsp file it is not executing the batch file.
But if I put the below code after above code in jsp the batch is executed.

  String str = null;
				System.out.println("<OUTPUT>");
				InputStream outStr = proc.getInputStream();
				BufferedReader br = new BufferedReader(new InputStreamReader(outStr));
				while((str = br.readLine()) != null)
				{
					System.out.println(str);
				}
				System.out.println("/<OUTPUT>");  

Also I have checked that the batch is executing while run from command promt.
Also can somebody confirm me whether the code written after Runtime.exec() will be executed after the exec finished its work or not?

Please help.

[Ulf Dittmer]

So you've learned that you need to handle the I/O streams when using Runtime.exec ... for further information, read this article.

As to the second part of the question, that's easy to test, no?