run bat in child process java

    void runBatch() {
        ProcessBuilder processBuilder = new ProcessBuilder();

        // Run this on Windows, cmd, /c = terminate after this run
        processBuilder.command("cmd.exe", "/c", "what.bat");

        try {

            Process process = processBuilder.start();

            // blocked :(
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));

            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }

            int exitCode = process.waitFor();
            System.out.println("\nExited with error code : " + exitCode);

        } catch (IOException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }