dim2016

Доброго времени суток!

Пробую из  Java кода запустить selenium grid, командные строки открываются  и сразу моментально закрываются,подскажите в чём может быть проблема?

C:\Selenium_driver\selenium-server-standalone-3.141.59.jar  в переменные среды добавил,может в переменных средах проблемы?

Пример кода для запуска командных строк:

import java.io.IOException;
import java.io.OutputStream;

    public class WindowsCmdUtility {
        public static void main(String args[]) throws InterruptedException{
            WindowsCmdUtility testScript = new WindowsCmdUtility();
            execDOSCmdForHub();
            Thread.sleep(4000);
            execDOSCmdForNode("5555");
            Thread.sleep(4000);
            execDOSCmdForNode("5556");
            Thread.sleep(5000);
            // 	execDOSCmdToEndJavaProcesses();
        }
        public static void execDOSCmdToEndJavaProcesses() {
            try {
                // Execute command
                String command = "cmd /c start taskkill /f /im java.exe";
                Process child = Runtime.getRuntime().exec(command);
                // Get output stream to write from it
                OutputStream out = child.getOutputStream();
                out.write("cd C:/ /r/n".getBytes());
                out.flush();
                out.write("dir /r/n".getBytes());
                out.close();
            } catch (IOException e) {
            }
        }
        public static void execDOSCmdForHub() {
            try {
                // Execute command
                String command = "cmd /c start java -jar \"e:\\A Selenium Thorough\\selenium-server\\selenium-server-standalone-3.141.59.jar\" -role hub";
                Process child = Runtime.getRuntime().exec(command);
                child.waitFor();
                // Get output stream to write from it
                OutputStream out = child.getOutputStream();
                out.write("cd C:/ /r/n".getBytes());
                out.flush();
                out.write("dir /r/n".getBytes());
                out.close();
            } catch (IOException e) {
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        public static void execDOSCmdForNode(String nodePort) {
            try {
                // Execute command
                String command = "cmd /c start java -jar \"e:\\A Selenium Thorough\\selenium-server\\selenium-server-standalone-3.141.59.jar\" -role node -port "+nodePort+" -hub http://localhost:4444/grid/register";
                Process child = Runtime.getRuntime().exec(command);
                child.waitFor();
                // Get output stream to write from it
                OutputStream out = child.getOutputStream();
                out.write("cd C:/ /r/n".getBytes());
                out.flush();
                out.write("dir /r/n".getBytes());
                out.close();
            } catch (IOException e) {
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }