ping - IPAddress

[rama krishnan]

How to Ping IPAddress of Multiple Client System

I tried this logic successfully in my local system, but I don't how to Ping others System IPAddress within my System

Please reply Soon

[Sachindra Pratap]

 /*
 

 
 
   import java.io.*;
   import java.net.*;
   public class LookUpReach {
      public boolean lookfunc(String name)
      {
           String name1=name;
           boolean reachable=false;
           try {
                  InetAddress address = InetAddress.getByName(name1);
                  reachable =address.isReachable(3000);
                  
                   //System.out.println("Reach: "+ address.isReachable(3000) );
              
           } 
           catch (UnknownHostException e){
                    System.err.println("Unable to lookup " + name1);
           }
           catch (IOException e){
                    System.err.println("Unable to reach " + name1);
           }
            catch(Exception e1){System.out.println("Exception raised");}
            return reachable;
      }
        
   }   

Make a object of this class , and then through this object call function within this class, in argument giving the ip address you want to ping.
If this ip is reachable it will return true.

[Evelina Vrabie]

Hi,

I read a lot of stuff recently about writing a ping program in java and I stumbled upon many answers. I tried the approach above but it didn't work (the answer is here: http://java.sun.com/j2se/1.5.0/docs/api/java/net/InetAddress.html#isReachable(int) ). I also tried this one: http://java.sun.com/j2se/1.5.0/docs/guide/nio/example/Ping.java but without success. My last try was with exec, which worked but that's not a very nice platform independent solution. What are my options for writing a program similar to the one above that actually work? Should I write a program in C and use it in java or there are some thrd. party libraries known?


Thanks a lot.