Java Utililty Methods IP Address to Byte Array

List of utility methods to do IP Address to Byte Array

  1. HOME
  2. Java
  3. I
  4. IP Address to Byte Array

Description

The list of methods to do IP Address to Byte Array are organized into topic(s).

Method

byte[]ip2bytes(String ip)
ipbytes 
String[] addrs = ip.split("\\.");
if (addrs.length != 4)
    throw new IllegalArgumentException("ip should be a x.x.x.x");
byte[] bytes = new byte[4];
for (int i = 0; i < 4; i++) {
    int a = Integer.parseInt(addrs[i]);
    if (a > 255)
        throw new IllegalArgumentException("not a legal ip address");
...
byte[]ip2bytes(String ipAddr)
ipbytes 
byte[] ret = new byte[4];
try {
    String[] ipArr = ipAddr.split("\\.");
    ret[0] = (byte) (Integer.parseInt(ipArr[0]) & 0xFF);
    ret[1] = (byte) (Integer.parseInt(ipArr[1]) & 0xFF);
    ret[2] = (byte) (Integer.parseInt(ipArr[2]) & 0xFF);
    ret[3] = (byte) (Integer.parseInt(ipArr[3]) & 0xFF);
    return ret;
...
byte[]ipToByte(String ip)
ip To Byte 
String[] spl1 = ip.split("\\.");
byte[] spl2 = new byte[spl1.length];
for (int i = 0; i < spl1.length; i++) {
    spl2[i] = (byte) Integer.parseInt(spl1[i]);
return spl2;
int[]ipToByte(String ip)
ip To Byte 
int[] result = new int[4];
String[] ipPart = ip.split("\\.");
result[0] = Integer.parseInt(ipPart[0]);
result[1] = Integer.parseInt(ipPart[1]);
result[2] = Integer.parseInt(ipPart[2]);
result[3] = Integer.parseInt(ipPart[3]);
return result;
byte[]IpToBytes(String ip)
Ip To Bytes 
String[] ipStr = ip.split("\\.");
byte[] bytes = new byte[ipStr.length];
for (int i = 0; i < ipStr.length; i++) {
    bytes[i] = Integer.valueOf(ipStr[i], 10).byteValue();
return bytes;
byte[]ipToBytesByReg(String ipAddr)
ip To Bytes By Reg 
byte[] ret = new byte[4];
try {
    String[] ipArr = ipAddr.split("\\.");
    ret[0] = (byte) (Integer.parseInt(ipArr[0]) & 0xFF);
    ret[1] = (byte) (Integer.parseInt(ipArr[1]) & 0xFF);
    ret[2] = (byte) (Integer.parseInt(ipArr[2]) & 0xFF);
    ret[3] = (byte) (Integer.parseInt(ipArr[3]) & 0xFF);
    return ret;
...
byte[]ipv4StringToByteArrayUnchecked(String str)
ipv String To Byte Array Unchecked 
byte[] ret = new byte[4];
String[] s = str.split("\\.");
for (int i = 0; i < ret.length; i++) {
    ret[i] = (byte) Integer.parseInt(s[i], 10);
return ret;
byte[]ipv4ToBytes(String ipv4)
ipv To Bytes 
String[] groups = ipv4.split("\\.");
byte[] ret = new byte[4];
for (int i = 0; i < 4; i++) {
    ret[i] = (byte) Integer.parseInt(groups[i]);
return ret;
byte[]ipv4ToBytes(String ipv4)
IPv4 String to bytes. 
if (ipv4 == null || ipv4.isEmpty()) {
    return null;
final String[] segments = ipv4.split("\\.", -1);
if (segments.length != 4) {
    return null;
final byte[] ret = new byte[4];
...
byte[]ipv4ToBinary(String ip)
ipv To Binary 
try {
    return InetAddress.getByName(ip).getAddress();
} catch (Exception e) {
    return new byte[4];