Servlet中Response的flushBuffer()具有什么功能呢？

flushBuffer()功能

flushBuffer()的功能:
     将Buffer中的内容写到客户端浏览器
      如果不运行flushBuffer
	   当程序运行到最后的右大括号的时候
        Tomcat才会将Response的Buffer的东西
          一次性发给客户端

 
package com.java265;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ServletHello1 extends HttpServlet {
    protected void doGet(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        String m = request.getParameter("name");
        PrintWriter pw = response.getWriter();
        for (int i = 0; i < 10; i++) {
            pw.println("输出信息至客户端 " + m);   
            // pw.flush();
            response.flushBuffer();
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        } 
        pw.println("运行完毕!");
    }
}