response的write输出问题

package response;

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 ResponseDemo2 extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
test1(response);
}

private void test1(HttpServletResponse response) throws IOException {
response.setCharacterEncoding("UTF-8");//设置response所要查询的码表（在封装到response对象中的时候会先查询一个码表，在这里可以设置）
response.setHeader("Content-type", "text/html;charset = UTF-8");//控制浏览器使用的码表
String data = "中国";
PrintWriter out =response.getWriter();
out.write(data);
}

private void test2(HttpServletResponse response) throws IOException {
response.setCharacterEncoding("UTF-8");//设置response所要查询的码表（在封装到response对象中的时候会先查询一个码表，在这里可以设置）
response.setContentType("text/html;charset = UTF-8");//这一行代码同下一行相同（这不是一个万能的代码，只是一个常用的代码）。
response.setHeader("Content-type", "text/html;charset = UTF-8");//控制浏览器使用的码表（其实呢这句话已经设置了response需要调用的码表类型）
String data = "中国";
PrintWriter out =response.getWriter();//write流只适合写字符串
out.write(data);
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

doGet(request,response);
}

}