package socket;
import java.net.InetAddress;
public class ShowIP {
public static void main(String[] args) {
try{
if(args.length>0){
String hostName=args[0];
InetAddress[] addr = InetAddress.getAllByName(hostName); //得到该主机的所有地址
//打印输出到控制台
for(InetAddress address : addr){
System.out.println(address.getHostAddress());
}
}else{
System.out.println(InetAddress.getLocalHost().getHostAddress());
}
}catch(Exception e){
e.printStackTrace();
}
}
//控制台输出192.168.234.103，是本机的IP地址
}