Question

Anyone could you please help me to list the name of all computers connected to the LAN with JAVA?

Answer 1

One way you could solve this without using outside system calls would be to try every single possible IP address.

Iterate over addresses, sending data to each one using something like this…

for (int i =0; i<100; i++) {
    String ip = "192.168.1." + i
    InetAddress address = InetAddress.getByAddress(ip); 
}

Any responses you get would indicate an active IP. You will be a limited by your subnet in this approach, however.