Java InetAddress.getHostName()/getHostAddress

import java.net.InetAddress;
import java.util.Scanner;

class Blog {
   public static void main(String[] args) throws Exception {
	   new Byul();
   }
}

class Byul {
	Scanner sc;
	
	Byul() {
		sc = new Scanner(System.in);
		while (true) {
			System.out.println("Host 이름을 입력하세요.");		
			try {
				InetAddress ia = InetAddress.getByName(sc.next());
				System.out.println("Computer NAME: " + ia.getHostName());
				System.out.println("Computer IP: " + ia.getHostAddress());
			} catch (Exception e) {
				System.out.println(e.getMessage());
			}
		}
	}
}