用java做脚本,如何实现日期时间的动态显示

求个实现日期时间动态显示(就是会自动1秒1秒地加上去)的代码,用JAVA做脚本,我知道静态显示很简单,可是不知道如何动态显示,顺便再加个星期几吧

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http://www.25175.com/200609/25175/25175_html/2007-06/1884.html
是我没说清楚吗  我想用JAVA语言实现,而不是JS,谢谢
setTimeout 去定时执行某个函数
能给个代码吗?因为我才开始学JSP,而且对JAVA也不是太熟,所以....
你要显示的时间是服务器时间还是用户客户机的时间，有点不一样啊
1.客户机时间（简单）
<body>
<span id="aa1"></span>
<script>
  showTime();
  function showTime(){
    var now = new Date();
    document.getElementById("aa1").innerHTML=now.getHours()+":"+now.getMinutes()+":"+now.getSeconds();
    setTimeout("showTime()",1000);
  }
</script>
</body>
2.服务器时间（也不难）
<%@ page language="java" import="java.util.*" contentType="text/html;charset=GBK" %>
<html>
<body>
<span id="aa1"></span>
<script>
  var now = new Date();
  now.setTime(<%=new Date().getTime()%>);
  showTime();
  function showTime(){
    document.getElementById("aa1").innerHTML=now.getHours()+":"+now.getMinutes()+":"+now.getSeconds();
var c=now.getTime();
c+=1000;
now.setTime(c);
    setTimeout("showTime()",1000);
  }
</script>
</body>
</html>
lz，你要是非要用java不用js，还要每间隔断时间变化一次，那没办法，ajax吧！！
非得用JAVA啊,老师布置的作业,让我们往JSP页面中添加这个功能,但必须是用JAVA
可以用javascript  <div id="divTime">
<script language="javascript">setInterval("divTime.innerHTML=new Date().toLocaleString()+'星期'+'日一二三四五六'.charAt(new Date().getDay())",500)
</script>
</div>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Time</title>
<script>
var xmlHttp;
function createXMLHttpRequest(){
if(window.ActiveXObject){
xmlHttp=new ActiveXObject("Microsoft.XMLHttp");
}else if(window.XMLHttpRequest){
xmlHttp=new XMLHttpRequest();
}
}
function exec(){
createXMLHttpRequest();
xmlHttp.open("GET","/Ajax/servlet/DateUpdateServlet",true);
xmlHttp.onReadyStateChange=handleFun;
xmlHttp.send(null);
}
function handleFun(){
if(xmlHttp.readyState==4){
if(xmlHttp.status==200){
//document.getElementById("div").innerText="";
document.getElementById("div").innerText=xmlHttp.responseTEXT;
}
}
}
function a(){
alert(1);
}
setInterval("exec()",1000);
</script>
</head>
<body>
<div id="div"></div>
</body>
</html>
package com.myself;import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;public class DateUpdateServlet extends HttpServlet { /**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss E");
String time = sdf.format(date);
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.write(time);
out.flush();
out.close();
} public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request,response);
}
}
还有一中方式：
<%@ page language="java" contentType="text/html; charset=utf-8" import="java.util.Date,java.text.SimpleDateFormat"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss E");
out.println(sdf.format(date));
response.setHeader("refresh","1;URL=date.jsp");
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
</body>
</html>
第一种是ajax
哈哈，谁叫你手动刷新的，response.setHeader("refresh","1;URL=date.jsp"); 的意思不明白吗？？
楼主说话有点颠三倒四，什么是用java作脚本？
是JAVA的applet吧？不过这个东西已经太老了现在好像很少人用做脚本的
用java做那个大材小用了  还是建议你用JS WEB的用JS做这些很方便