long currentTime = System.currentTimeMillis();
boolean isPinged = InetAddress.getByName(servername).isReachable(2000); // 2 seconds
currentTime = System.currentTimeMillis() - currentTime;
if(isPinged) {
    System.out.println("pinged successfully in "+ currentTime+ "millisecond");
} else {
    System.out.println("PIng failed.");
}

long start = System.currentTimeMillis();
long ping;




String[] command = { "cmd.exe", "/C", "ping 192.168.1.101" };
commandProcess = Runtime.getRuntime().exec(command);
BufferedReader buffy = new BufferedReader(new InputStreamReader(commandProcess.getInputStream()));
String readline;
while((readline = buffy.readLine())!=null){
System.out.println(readline);
if(readline.contains("reply")){
 long ping = System.currentTimeMillis();
 System.out.println("Pinged in:"+ ping);
 }
}
 long end = System.currentTimeMillis();
 String done = "Completed in times:" +start + ping +end;

String pingCmd = "ping " + ip;
    try {
        Runtime r = Runtime.getRuntime();
        Process p = r.exec(pingCmd);
        BufferedReader in = new BufferedReader(new
        InputStreamReader(p.getInputStream()));
        String inputLine;
        while ((inputLine = in.readLine()) != null) {
          System.out.println(inputLine);
            pingResult += inputLine;


        }
        in.close();

    } catch (IOException e) {
        System.out.println(e);
    }
}

public static void main(String[] args) {

    String ip = "google.com";
    runSystemCommand("ping " + ip);