detecting devices connected to my network

Question

I need Java code to detect current connected devices to my network. I tried the following idea : - for all possible addresses check if this address is connected ( 254 loop ) - to speed up this process I created a thread for each check to make them run in parallel

Is there any way more efficient ??

Answer 1

Well there are lots of ways of detecting networked devices and you give no specifics on the nature of your situation.

The simplest (and most simplistic) approach I can think of would be to ping the broadcast address of your IP network and then consult the system's ARP table. Unfortunately I have no particular strategy for accessing the ARP table from Java to suggest.