java 流应用

先监听一个端口:

nc -l -p 12345

java 代码:

package test;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;;

public class Hello{
	

	public static void main(String[] args) {
		
		
		try {
			Socket socket = new Socket(InetAddress.getByName("localhost"), 12345);
			PrintWriter out = new PrintWriter(
						new BufferedWriter(
								new OutputStreamWriter(
										socket.getOutputStream())));
			out.println("hello");
			out.flush();
			BufferedReader in = new BufferedReader(
					new InputStreamReader(
							socket.getInputStream()));
			String line;
			line = in.readLine();
			System.out.println(line);
			out.close();
			socket.close();
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}