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Groups > comp.lang.java.programmer > #9148

Ping from JAVA to IP Address

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Hi every one

I'm tiring to ping to External IP address (e.x : www.google.com) but I
keep get false every time.
I write function to do the ping. I can ping to local IP address fine,
but when I try to ping any external IP (e.x. www.google.com) it wont
work I keep get false.
this is my code
============ start ===============
package netscan;

import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;

public class NetPing
{
    boolean reach = false;
    public boolean pinging()
    {
        try
        {
            InetAddress address =
InetAddress.getByName("www.google.com");
            reach =address.isReachable(60000);
            System.out.println(String.valueOf(reach));

        }
        catch(UnknownHostException uhe)
        {
            System.out.println(uhe.toString());
        }
        catch(IOException io)
        {
            System.out.println(io.toString());
        }
        catch(Exception e)
        {
            System.out.println(e.toString());
        }

        return reach;
    }

}
============ end ===============

Best
Salim

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Thread

Ping from JAVA to IP Address sahm <sahm007@gmail.com> - 2011-10-24 11:01 -0700
  Re: Ping from JAVA to IP Address Robert Klemme <shortcutter@googlemail.com> - 2011-10-24 20:26 +0200
    Re: Ping from JAVA to IP Address markspace <-@.> - 2011-10-24 14:52 -0700
      Re: Ping from JAVA to IP Address sahm <sahm007@gmail.com> - 2011-10-24 22:31 -0700
        Re: Ping from JAVA to IP Address sahm <sahm007@gmail.com> - 2011-10-25 01:56 -0700
          Re: Ping from JAVA to IP Address Screamin Lord Byron <scre@min.dot> - 2011-10-25 11:57 +0200
          Re: Ping from JAVA to IP Address markspace <-@.> - 2011-10-25 08:12 -0700
            Re: Ping from JAVA to IP Address Screamin Lord Byron <scre@min.dot> - 2011-10-25 22:13 +0200
              Re: Ping from JAVA to IP Address markspace <-@.> - 2011-10-25 16:02 -0700
                Re: Ping from JAVA to IP Address Screamin Lord Byron <scre@min.dot> - 2011-10-26 13:16 +0200
              Re: Ping from JAVA to IP Address Arne Vajhøj <arne@vajhoej.dk> - 2011-11-06 15:29 -0500
                Re: Ping from JAVA to IP Address glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2011-12-07 08:59 +0000
  Re: Ping from JAVA to IP Address Roedy Green <see_website@mindprod.com.invalid> - 2011-10-25 21:28 -0700
  Re: Ping from JAVA to IP Address Arne Vajhøj <arne@vajhoej.dk> - 2011-11-06 15:36 -0500

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