Reader

import java.io.BufferedReader;
import java.io.InputStreamReader;


public class MyClass {

    public static void main(String[] args) throws Exception {
        ProcessBuilder processBuilder = new ProcessBuilder(args);
        processBuilder.redirectOutput(ProcessBuilder.Redirect.PIPE);
        processBuilder.command("/home/sgerard/script/script.pl", args[0]);

        Process process = processBuilder.start();

        int waitFlag = process.waitFor();

        String line;
        BufferedReader brCleanUp = new BufferedReader(new InputStreamReader(process.getErrorStream()));
        while ((line = brCleanUp.readLine()) != null) {
            System.out.println("[Stderr] " + line);
        }
        brCleanUp.close();

        System.exit(process.exitValue());
    }
}