第二周作业 

<%@page import="com.sun.xml.internal.txw2.Document"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head> 
     <title>My JSP 'index.jsp' starting page</title>
    </head>
    <body>
    
     <%
    //java注释
     Date d=new Date();
     int hour=d.getHours(); //获取小时
     int minute=d.getMinutes();//获取分钟
     int second=d.getSeconds();//获取秒
   out.print("当前时间："+hour+":"+minute+":"+second+"<br><br>");
    if(hour>=0&&hour<=12){
    out.print("早上好");
   }else if(hour>=13&&hour<=17){
    out.print("下午好");
  }else if(hour>=18&&hour<=23){
    out.print("晚上好");
     }
     %>
   </body>
</html>

2.使用声明方法,在页面调用该方法,判断2023是不是闰年

 

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
     
  </head>
  <!--HTML注释语句-->
  <body>
      <h1>判断闰年</h1>
    <%!
    String panduan(int a){
        if((a%4==0&&a%100!=0)||a%400==0){
            return "闰年";
        }else{
            return "平年";
        }
    }
     %>
     <%
     int a=2023;
     out.print("2023为"+panduan(a));
      %>
  </body>
</html>

 

3.表达式+程序段 循环输出5条hr,长度分别为100px-500px

 
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 2 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 3 <html>
 4 <head>
 5 <title>My JSP 'index.jsp' starting page</title>
 6 </head>
 7
 8 <body>
 9 <%--jsp注释 --%>
10     <%
11         for (int i = 1; i <= 5; i++) {
12     %>
13     <hr width="<%=i * 100%>px" size="<%=i%>" color="blue">
14     <%
15         }
16     %>
17     <br />
18
19
20 </body>
21 </html>

 

posted on 2022-03-13 19:55  庞博  阅读(16)  评论(0)  编辑  收藏  举报

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