Correct way to create another process and execute an external command

ExecuteExternalCommand.java

static List<String> execute(final List<String> args) throws IOException, InterruptedException {
        final List<String> output = new LinkedList<>();
        ProcessBuilder pb = new ProcessBuilder(args);
        pb.redirectErrorStream(true);
        Process process = pb.start();
        BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
        String line;
        while ((line = br.readLine()) != null) {
            output.add(line);
        }
        process.waitFor();
        return output;
}