ProcessBuilder redirected to standard output

Question

I would like to redirect a java process output towards the standard output of the parent java process.

Using the ProcessBuilder class as follows:

public          


        

Answer 1

You did miss a key piece, you actually need to start your process and wait for your output. I believe this will work,

processBuilder.redirectOutput(ProcessBuilder.Redirect.INHERIT);
// Start the process.
try {
  Process p = processBuilder.start();
  // wait for termination.
  p.waitFor();
} catch (IOException e) {
  e.printStackTrace();
} catch (InterruptedException e) {
  e.printStackTrace();
}

Answer 2

Try ProcessBuilder.inheritIO() to use the same I/O as the current Java process. Plus you can daisy chain the methods:

ProcessBuilder pb = new ProcessBuilder("cmd")
    .inheritIO()
    .directory(new File("C:"));
pb.start();