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> hgfddKJHSGSDJGFHSDG<br> <% Calendar c=Calendar.getInstance(); int year=c.get(Calendar.YEAR); int month=c.get(Calendar.MONTH)+1; int date=c.get(Calendar.DATE); int hour=c.get(Calendar.HOUR); int minute=c.get(Calendar.MINUTE); int second=c.get(Calendar.SECOND); String str=""; if(hour>=0&&hour<=12){str="上午好";} else if(hour>=13&&hour<=17){str="下午好";} else if(hour>=18&&hour<=23){str="晚上好";} %> 现在日期为<%=year %>-<%=month %>-<%=date %> <br> 现在时间为 <%=hour %>:<%=minute %>:<%=second %><br> <%=str %>! </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"%> <%! public static boolean year(int y){ if(y%4==0&&y%100!=0||y%400==0){return true;} else {return false;} } %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% boolean n=year(2023); out.print(n); %> </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> </head> <body> <% for(int i=1;i<=5;i++){ %> <hr width="<%=i*100%>px"> <% }%> </body> </html>
4.在第一题上加Java注释,第二题加html注释,第三题加jsp注释
<%@ 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> hgfddKJHSGSDJGFHSDG<br> <% //java注释 Calendar c=Calendar.getInstance(); int year=c.get(Calendar.YEAR); int month=c.get(Calendar.MONTH)+1; int date=c.get(Calendar.DATE); int hour=c.get(Calendar.HOUR); int minute=c.get(Calendar.MINUTE); int second=c.get(Calendar.SECOND); String str=""; if(hour>=0&&hour<=12){str="上午好";} else if(hour>=13&&hour<=17){str="下午好";} else if(hour>=18&&hour<=23){str="晚上好";} %> 现在日期为<%=year %>-<%=month %>-<%=date %> <br> 现在时间为 <%=hour %>:<%=minute %>:<%=second %><br> <%=str %>! </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%! public static boolean year(int y){ if(y%4==0&&y%100!=0||y%400==0){return true;} else {return false;} } %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <!-- html注释 --> <% boolean n=year(2023); out.print(n); %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <%--jsp注释 --%> <% for(int i=1;i<=5;i++){ %> <hr width="<%=i*100%>px"> <% }%> </body> </html>
