Here , is the very simple code to get IP address of hosts connected with your system:

import java.net.*;

public class GetAll{

public static void main(String args[]){

try{

InetAddress localhost = InetAddress.getLocalHost();

// this code assumes IPv4 is used

byte[] ip = localhost.getAddress();

for (int i = 1; i <= 254; i++)
{
ip[3] = (byte)i;
InetAddress address = InetAddress.getByAddress(ip);

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