netcon.java

外卖管理程序

package Client;

import java.net.*;
import java.io.*;

public class NetCon
{
	public NetCon(String host_ip)throws Exception
	{
			client =new Socket(host_ip,7015);
	}
	public void send(String message)throws Exception
	{
		PrintWriter os=new PrintWriter(new BufferedWriter(new OutputStreamWriter(client.getOutputStream())));
		os.println(message); 
		os.flush();  
	}
	public String receive()throws Exception
	{
		String message = "";
		BufferedReader is=new BufferedReader(new InputStreamReader(client.getInputStream()));
		message = is.readLine();
		return message;
	}
	public void close()
	{
		try{
			if(client.isConnected())
				client.close();
		}catch(Exception e)
		{
			e.printStackTrace();
		}
	}
	
	private Socket client;
}