Get host name for IP using SQL

Hi All

Kindly, I need a function to return host name with input parameter IP address for any PC in the local network,

I did the following with user SYS and it's executed without errors but returning null, please help

Note: if i change the statement from (PING or NBTSTAT) to DIR it's working and returning DIR command output

1- create Java source named Host:

create or replace and compile java source named "Host" asimport java.io.*;public class Host {  public static void executeCommand(String command) {    try {      String[] finalCommand;      if (isWindows()) {        finalCommand = new String[4];        // Use the appropriate path for your windows version.        //finalCommand[0] = "C:\\winnt\\system32\\cmd.exe";    // Windows NT/2000        finalCommand[0] = "C:\\windows\\system32\\cmd.exe";    // Windows XP/2003        //finalCommand[0] = "C:\\windows\\syswow64\\cmd.exe";  // Windows 64-bit        finalCommand[1] = "/y";        finalCommand[2] = "/c";        finalCommand[3] = command;      }      else {        finalCommand = new String[3];        finalCommand[0] = "/bin/sh";        finalCommand[1] = "-c";        finalCommand[2] = command;      }      final Process pr = Runtime.getRuntime().exec(finalCommand);      pr.waitFor();      new Thread(new Runnable(){        public void run() {          BufferedReader br_in =