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>