第二次作业

  1. 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"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!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>");
   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<=24){
   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

     

    闰年：能被4整除但不能被100整除或者能被400整除

     

    <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%!
   boolean isRun(int year){
   if(year%4==0&&year%100!=0||year%400==0){
     return true;
      }
     return false;
      }
  %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  <!-- HTML注释 -->
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  <body>
   <%
  boolean x=isRun(2018);
  out.print(x);
    %>
  </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"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  <body>
  <%--jsp注释 --%>
   <%
 for(int i=1;i<=5;i++){  %>
 <hr width="<%=i*100%>px" color="purple">
 <% } %>
  </body>
</html>

     

     

     

     

posted @ 2022-03-09 22:02  njztmx  阅读(25)  评论(0)  编辑  收藏  举报