Java hundred percent gain to machine IP address and Mac code

ImportOrg.slf4j.Logger;Importorg.slf4j.LoggerFactory;Importjava.net.InetAddress;ImportJava.net.NetworkInterface;Importjava.net.SocketException;Importjava.util.ArrayList;Importjava.util.Enumeration;Importjava.util.List; Public classIputil {Private Static FinalLogger Logger = Loggerfactory.getlogger (iputil.class); PrivateIputil () {}/*** This method describes: Get the IP address of the server*/     Public Staticstring Getlocalip () {string SIP= ""; InetAddress IP=NULL; Try {            BooleanBfindip =false; Enumeration<NetworkInterface> netinterfaces =networkinterface.getnetworkinterfaces ();  while(Netinterfaces.hasmoreelements ()) {if(BFINDIP) { Break; } networkinterface ni=(NetworkInterface) netinterfaces. Nextelement (); Enumeration<InetAddress> ips =ni.getinetaddresses ();  while(Ips.hasmoreelements ()) {IP=(inetaddress) ips.nextelement (); if(!ip.isloopbackaddress ()&&ip.gethostaddress (). Matches ("(\\d{1,3}\\.) {3}\\d{1,3} ") ) {Bfindip=true;  Break; }                }            }        } Catch(Exception e) {logger.error ("Error obtaining IP address of server: {}", E.getmessage ()); }        if(NULL!=IP) {SIP=ip.gethostaddress (); }        returnSIP; }    /*** This method describes: Get the IP address of the server (multi-NIC)*/     Public StaticList<string>getlocalips () {inetaddress IP=NULL; List<String> IPList =NewArraylist<string>(); Try{Enumeration<NetworkInterface> netinterfaces =networkinterface.getnetworkinterfaces ();  while(Netinterfaces.hasmoreelements ()) {NetworkInterface ni=(NetworkInterface) netinterfaces. Nextelement (); Enumeration<InetAddress> ips =ni.getinetaddresses ();  while(Ips.hasmoreelements ()) {IP=ips.nextelement (); if(!ip.isloopbackaddress ()&&ip.gethostaddress (). Matches ("(\\d{1,3}\\.) {3}\\d{1,3} ") {Iplist.add (ip.gethostaddress ()); }                }            }        } Catch(Exception e) {logger.error ("Error getting the IP address of the server (multiple NIC): {}", E.getmessage ()); }        returnIPList; }    /*** This method describes: get the MAC address of the server*/     Public Staticstring Getmacid () {string MacId= ""; InetAddress IP=NULL; NetworkInterface ni=NULL; Try {            BooleanBfindip =false; Enumeration<NetworkInterface> netinterfaces =networkinterface.getnetworkinterfaces ();  while(Netinterfaces.hasmoreelements ()) {if(BFINDIP) { Break; } ni=netinterfaces. nextelement (); //----------specific situations, consider using Ni.getname to judge//Traverse all IPsenumeration<inetaddress> ips =ni.getinetaddresses ();  while(Ips.hasmoreelements ()) {IP=ips.nextelement (); if(!ip.isloopbackaddress ()//Non-127.0.0.1&&ip.gethostaddress (). Matches ("(\\d{1,3}\\.) {3}\\d{1,3} ") ) {Bfindip=true;  Break; }                }            }        } Catch(Exception e) {logger.error ("Error getting server's MAC address: {}", E.getmessage ()); }        if(NULL!=IP) {            Try{macId=getmacfrombytes (Ni.gethardwareaddress ()); } Catch(SocketException e) {logger.error ("Error getting server's MAC address: {}", E.getmessage ()); }        }        returnmacId; }    /*** This method describes: Get the server's MAC address (multi-NIC)*/     Public StaticList<string>Getmacids () {inetaddress IP=NULL; NetworkInterface ni=NULL; List<String> maclist =NewArraylist<string>(); Try{Enumeration<NetworkInterface> netinterfaces =networkinterface.getnetworkinterfaces ();  while(Netinterfaces.hasmoreelements ()) {NI=netinterfaces. nextelement (); //----------specific situations, consider using Ni.getname to judge//Traverse all IPsenumeration<inetaddress> ips =ni.getinetaddresses ();  while(Ips.hasmoreelements ()) {IP=ips.nextelement (); if(!ip.isloopbackaddress ()//Non-127.0.0.1&&ip.gethostaddress (). Matches ("(\\d{1,3}\\.) {3}\\d{1,3} ") {maclist.add (Getmacfrombytes (Ni.gethardwareaddress ())); }                }            }        } Catch(Exception e) {logger.error ("Error getting server's MAC address (multiple NIC): {}", E.getmessage ()); }        returnmaclist; }    Private StaticString Getmacfrombytes (byte[] bytes) {StringBuffer mac=NewStringBuffer (); byteCurrentbyte; BooleanFirst =false;  for(byteb:bytes) {            if(first) {Mac.append ("-"); } currentbyte= (byte) ((b & c) >> 4);            Mac.append (integer.tohexstring (currentbyte)); Currentbyte= (byte) (B & 15);            Mac.append (integer.tohexstring (currentbyte)); First=true; }        returnmac.tostring (). toUpperCase (); }     Public Static voidMain (string[] args) {String localip=Iputil.getlocalip (); List<String> localips =iputil.getlocalips (); String macId=iputil.getmacid (); List<String> Macids =Iputil.getmacids ();        System.out.println (Localip);        System.out.println (localips);        System.out.println (MACID);    System.out.println (Macids); }}

Java hundred percent gain to machine IP address and Mac code