Execute external program from Java
- by Saurabh Lalwani
Hi, I am trying to execute a program from the Java code. Here is my code:
public static void main(String argv[]) {
try {
String line;
Process p = Runtime.getRuntime().exec(
"/bin/bash -c ls > OutputFileNames.txt");
BufferedReader input = new BufferedReader(
new InputStreamReader(p.getInputStream()));
while ((line = input.readLine()) != null) {
System.out.println(line);
}
input.close();
} catch (Exception err) {
err.printStackTrace();
}
}
My OS is Mac OS X 10.6.
If I remove the "> OutputFileNames.txt" from the getRuntime().exec() method, all the file names are printed on the console just fine. But I need it to be printed to a file.
Also, if I change the command to:
Process p = Runtime.getRuntime().exec(
"cmd \c dir > OutputFileNames.txt");
and run it on Windows, it runs and prints the results in the file perfectly fine too.
I have read the other posts for executing another application from Java but none seemed to relate to my problem.
I would really appreciate any help I can get.
Thanks,
