JAVA get public network IP address and intranet IP address method __java

Package sockettest;


Import Java.io.BufferedReader;
Import java.io.IOException;
Import Java.io.InputStream;
Import Java.io.InputStreamReader;
Import java.net.InetAddress;
Import Java.net.URL;
Import java.net.URLConnection;


public class Ipdemo {
public static void Main (string[] args) {
try {
String ip1 = Getmyip ();
System.out.println ("MyIP:" + ip1);
String ip2 = getmyiplocal ();
System.out.println ("Mylocalip:" + ip2);
catch (IOException E1) {
E1.printstacktrace ();
}
}

private static String Getmyip () throws IOException {
InputStream ins = null;
try {
URL url = new URL ("http://ip.cn");
URLConnection con = url.openconnection ();
INS = Con.getinputstream ();
InputStreamReader Isreader = new InputStreamReader (INS, "Utf-8");
BufferedReader breader = new BufferedReader (Isreader);
StringBuffer webcontent = new StringBuffer ();
String str = NULL;
while (str = Breader.readline ())!= null) {
Webcontent.append (str);
}
int start = Webcontent.indexof ("<code>") +6;
int end = Webcontent.indexof ("</code");
Return webcontent.substring (start, end);
finally {
if (ins!= null) {
Ins.close ();
}
}
}

private static String getmyiplocal () throws IOException {
InetAddress ia = Inetaddress.getlocalhost ();
return ia.gethostaddress ();
}
}