第二周作业

1.p39 实验2 显示当前时间，并输出上午(0-12)好,下午好(13-17),晚上好(18-23)

<%@ 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><%Calendar y=Calendar.getInstance();//显示当前时间
          int year=y.get(Calendar.YEAR);
          int month=y.get(Calendar.MONTH)+1;
          int date=y.get(Calendar.DAY_OF_MONTH);
          int hour=y.get(Calendar.HOUR_OF_DAY);
          int minute=y.get(Calendar.MINUTE);
          int second=y.get(Calendar.SECOND);%>
    用户在<%= year %>/<%=month %>/<%=date%><br>
    <%=hour %>:<%=minute%>:<%=second%>访问了网页.
    <% if(hour<=12){
      out.print("早上好！");}
     else if(hour>12&&hour<=17){
      out.print("下午好！");}
       else if(hour>17&&hour<=23){
      out.print("晚上好！");}%>
    </h2>
     <br>
  </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>
  <%!
    boolean isRun(int year){
    if(year%4==0&&year%100!=0||year%400==0){
        return true; }
       return false;}  %>
  <head> 
    <title>闰年</title>
  </head>
  <body>
  <!-- 判断2023是不是闰年 -->
  <%
  boolean f=isRun(2023);
  out.print("不是闰年");
   %> 
  </body>
</html>

3.表达式+程序段 循环输出5条hr,长度分别为100px-500px
<hr width="<%=i%>"

<%@ 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>
  <%--表达式+程序段 循环输出5条hr,长度分别为100px-500px --%>
  <% 
  for(int i=1;i<=5;i++){ %>
  <hr width="<%=i*100%>px">
  <%  }%>
  </body>
</html>

 

posted @ 2022-03-13 12:53  赵佳慧  阅读(21)  评论(0)  编辑  收藏  举报