Java code get IP address

 Public classIptool { Public Static voidMain (string[] args) {Iptool Iptool=NewIptool ();    System.out.println (Iptool.getlocalip ()); }    /*** * To determine whether the previous operation is Windows. *      * @returntrue---is the Windows operation system*/    Private  BooleanIswindowsos () {BooleanIswindowsos =false; String Osname= System.getproperty ("Os.name"); if(Osname.tolowercase (). IndexOf ("Windows") >-1) {Iswindowsos=true; }        returnIswindowsos; }    /*** * Access to the IP address of the machine, and the automatic division of Windows or Linux operating system * * *@returnString*/     Publicstring Getlocalip () {string SIP= ""; InetAddress IP=NULL; Try {            //if the Windows operating system            if(Iswindowsos ()) {IP=Inetaddress.getlocalhost (); }            //if the Linux operating system            Else {                BooleanBfindip =false; Enumeration<NetworkInterface> netinterfaces = (enumeration<networkinterface>) NetworkInterface. getnetworkinterfaces ();  while(Netinterfaces.hasmoreelements ()) {if(BFINDIP) { Break; } networkinterface ni=(NetworkInterface) netinterfaces. Nextelement (); //----------specific situation, you can consider using Ni.getname to judge//all over the IPenumeration<inetaddress> ips =ni.getinetaddresses ();  while(Ips.hasmoreelements ()) {IP=(inetaddress) ips.nextelement (); if(Ip.issitelocaladdress () &&!ip.isloopbackaddress ()//127. The Lookback address is the beginning.&& ip.gethostaddress (). IndexOf (":") = =-1) {Bfindip=true;  Break; }                    }                }            }        } Catch(Exception e) {e.printstacktrace (); }        if(NULL!=IP) {SIP=ip.gethostaddress (); }        returnSIP; }}

Java code get IP address