package com.test;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.Socket;

public class ClientTcpTest {

	private String ip;
	private int port;
	private String sendMsg;
	private String receiveMsg;
	BufferedReader file;

	public ClientTcpTest(String ip, int port) throws IOException {

		this.ip = ip;
		this.port = port;
		Socket clientSocket = null;

		try {
			clientSocket = new Socket(ip, port);
		} catch (IOException e) {
			e.printStackTrace();
			System.exit(0);
		}
		OutputStream os = clientSocket.getOutputStream(); // out Socket
		InputStream is = clientSocket.getInputStream(); // in Socket
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(os));
		BufferedReader br = new BufferedReader(new InputStreamReader(is));

		sendMsg = "55232;2002;sswa;1111;15::::;8::::::\n";   //\n 꼭 입력할 것.
		bw.write(sendMsg);
		bw.flush();
		receiveMsg = br.readLine();
		System.out.println("SERVER Reply : " + receiveMsg);

		bw.close();
		br.close();
		clientSocket.close();

	}

	public static void main(String[] args) throws IOException {
		
		//사전에 명령프롬프트에서 telnet ip port 로 연결이 되는지 확인한다. 
		ClientTcpTest clientTcpTest = new ClientTcpTest("127.0.0.1",21);   
	}

}

select instance from v$thread;