Java IP address convert to int
public class Main { public static void main(String[] argv) throws Exception { String ip = "127.0.0.1"; System.out.println(ip2int(ip)); }/* w ww. ja va2 s. co m*/ public static long ip2int(String ip) { ip = ip.replace(".", ","); String[] items = ip.split(","); return Integer.valueOf(items[0]) << 24 | Integer.valueOf(items[1]) << 16 | Integer.valueOf(items[2]) << 8 | Integer.valueOf(items[3]); } }