B4J Question Help Getting UID for Linux OS

#If java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.Scanner;
import static javax.swing.JOptionPane.showMessageDialog;


    private static String sn = null;
    
    public static final String getLinuxSN() {

        if (sn == null) {
            readDmidecode();
        }
        if (sn == null) {
            readLshal();
        }
        if (sn == null) {
            throw new RuntimeException("Cannot find computer SN");
        }

        return sn;
    }

    private static BufferedReader read(String command) {

        OutputStream os = null;
        InputStream is = null;

        Runtime runtime = Runtime.getRuntime();
        Process process = null;
        try {
            process = runtime.exec(command.split(" "));
        } catch (IOException e) {
            showMessageDialog(null, e);
            throw new RuntimeException(e);
        }

        os = process.getOutputStream();
        is = process.getInputStream();

        try {
            os.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

        return new BufferedReader(new InputStreamReader(is));
    }

    private static void readDmidecode() {

        String line = null;
        String marker = "Serial Number:";
        BufferedReader br = null;

        try {
            br = read("dmidecode -t system");
            while ((line = br.readLine()) != null) {
                if (line.indexOf(marker) != -1) {
                    sn = line.split(marker)[1].trim();
                    break;
                }
            }
        } catch (IOException e) {
            showMessageDialog(null, e);
            throw new RuntimeException(e);
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
        }
    }

    private static void readLshal() {

        String line = null;
        String marker = "system.hardware.serial =";
        BufferedReader br = null;

        try {
            br = read("lshal");
            while ((line = br.readLine()) != null) {
                if (line.indexOf(marker) != -1) {
                    showMessageDialog(null, line);
                    sn = line.split(marker)[1].replaceAll("\\(string\\)|(\\')", "").trim();
                    break;
                }
            }
        } catch (IOException e) {
            showMessageDialog(null, e);
            throw new RuntimeException(e);
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    showMessageDialog(null, e);
                    throw new RuntimeException(e);
                }
            }
        }
    }
    

    /**
     * Method for get Linux Machine MotherBoard Serial Number
     * @return
     */
    public static String GetLinuxMotherBoard_serialNumber() {
        String command = "dmidecode -s baseboard-serial-number";
        String sNum = null;
        try {   
            Process SerNumProcess = Runtime.getRuntime().exec(command);
            BufferedReader sNumReader = new BufferedReader(new InputStreamReader(SerNumProcess.getInputStream()));
            sNum = sNumReader.readLine().trim();
            SerNumProcess.waitFor();
            sNumReader.close();
        }
        catch (Exception ex) {
            showMessageDialog(null, ex.getMessage());
            System.err.println("Linux Motherboard Exp : "+ex.getMessage());
            sNum ="error";
        }
        return sNum;
    }
        

#End If