# 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>

<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><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<=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"%>
<%!int i = 0;
int j = 0;%>
<!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;
}  %>
<html>
<!-- HTML注释 -->
<title>My JSP 'index.jsp' starting page</title>
<body>
<%
boolean f=isRun(2023);
out.print(f);
%>
</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>
<title>My JSP 'index.jsp' starting page</title>
<body>
<%--jsp注释 --%>>
<%
for(int i=1;i<=5;i++){ %>
<hr width="<%=i*100%>px">
<% }%>
</body>
</html>

posted @ 2022-03-29 15:21  董澳  阅读(8)  评论(0编辑  收藏  举报