JSP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> </head> <body> This is my JSP page. <br> <% Calendar c = Calendar.getInstance(); //获取时间 int hour = c.get(Calendar.HOUR); int minute = c.get(Calendar.MINUTE); int second = c.get(Calendar.SECOND); out.print("时间为"+hour+":"+minute+":"+second+"<br>"); if(hour>=0 && hour<=12){ //判断时间 out.print("上午好"); }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"%> <!-- 声明方法 --> <%! boolean leapyear(int year){ if(year%4==0 && year%100!=0 || year%400==0){ return true; }else{ return false; } } %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> This is my 判断闰年 page. <br> <!-- 调用方法判断 --> <% if(leapyear(2023)){ out.print("2023年是闰年"); }else{ out.print("2023年不是闰年"); } %> </body> </html>
3.表达式+程序段 循环输出5条hr,长度分别为100px-500px
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> This is my JSP hr page. <br> <%--使用循环 输出--%> <% int i=0; for(i=1;i<6;i++){ %> <hr width="<%=i*100%>px"> <% out.print("<dr>"); %> <% } %> </body> </html>