Iam not able to run a simple batch file from within java

Question

This is how my code looks like.
It does'nt give me any error but I dont see the output from batch file which is suposed to be a simple redirection of dir command...
package mypackage1;
import java.io.File;
public class RunBatch
public RunBatch()
try{
Runtime rt = Runtime.getRuntime();
String cmd = "generate_invoice";
String path = "C:\\application\\Maps\\Reports";
File file = new File(path);
String[] envp = {""};
String[] args = {"C:\\application\\Maps\\Reports\\generate_invoice.bat"};
System.out.println("************ executing batch ");
Process proc = rt.exec(args);
System.out.println("************ batch executed ");
}catch(Exception e)
e.printStackTrace();
* @param args
public static void main(String[] args)
RunBatch runBatch = new RunBatch();
}

Answer 1

Runtime.exec() only can run executable files. Batch file is not an executable - it is a script executed by command interpreter (cmd.exe). So, you should execute "c:\windows\system32\cmd.exe /c C:\application\Maps\Reports\generate_invoice.bat".
Denis
http://www.excelsior-usa.com/jet.html
JVM with AOT compilation