Java tutorial
//package com.java2s; //License from project: Open Source License import java.util.ArrayList; import java.util.HashMap; import java.util.StringTokenizer; public class Main { public static String getIdentifier(HashMap<String, ArrayList<String>> addresses) { String wifi_address = addresses.get("eth0").get(0); //for now we expect there to be only 1 address, the one OLSRd has assigned //need to extract the 3rd and 4th octet of the address StringTokenizer tokens = new StringTokenizer(wifi_address, "."); tokens.nextElement(); tokens.nextElement(); String identifier = tokens.nextToken() + "." + tokens.nextToken(); return identifier; } }