helloserver.java

《Java TCP/IP应用开发详解》的部分源程序,开发环境为ECLIPSE3.1

package section15;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;


public class helloServer {

	
	public static void main(String[] args) throws IOException{ 
		ServerSocket 	serverSocket=null;
		PrintWriter out=null;
		BufferedReader in=null;

	try{
		serverSocket=new ServerSocket(4444);
	}catch(IOException e)
	{
		System.err.println("Could not listen on port:4444");
		System.exit(1);
	}
	Socket clientSocket=null;
	try{
		clientSocket=serverSocket.accept();
		
	}	catch(IOException e)
	{
		System.err.println("Accept failed");
	    System.exit(1);
	}
	out=new PrintWriter(clientSocket.getOutputStream(),true);
	out.println("hello world!");
	out.close();
	clientSocket.close();
	serverSocket.close();
	}
	
}