InetAddress類（獲取主機ip與地址）

public class Address {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        InetAddress ip;
        try {
            ip = InetAddress.getLocalHost();
            String localname = ip.getHostName();
            String localip = ip.getHostAddress();
            System.out.println(localname);
            System.out.println(localip);
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }
    }

}