(Java) 아래 코딩에서 아이피주소와 포트번호를 입력받을 때 디폴트설정관련 문제입니다..

import java.io.*;
import java.net.*;
import java.util.Scanner;
 
class TCP_Client_Java {
	public static void main(String argv[]) throws Exception
	{
		Scanner input = new Scanner(System.in);
		String sentence;
		String modifiedSentence;
		String ip;
		int port;
		ip = input.nextLine();
		port = input.nextInt();
		System.out.print("Input Character : ");
		BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
		Socket clientSocket = new Socket(ip,port);
		DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());
		BufferedReader inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
		sentence = inFromUser.readLine();
		outToServer.writeBytes(sentence +'\n');
		modifiedSentence = inFromServer.readLine();
		System.out.println("From Server : " + modifiedSentence);
		clientSocket.close();
	}
}