第二次作业
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)
<body>
<%
Date date = new Date();/* 获取方法 */
int hour = date.getHours();
int minute = date.getMinutes();
int second = date.getSeconds();
out.print("当前时间：" + hour + ":" + minute + ":" + second + "<br>");//获取时间
if (hour >= 0 && hour <= 12) {
out.print("早上好");
} else if (hour >= 13 && hour <= 17) {
out.print("中午好");
} else if (hour >= 18 && hour <= 23) {
out.print("晚上好");
}
%>
</body>
2. 使用声明方法,在页面调用该方法,判断2023是不是闰年
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<!-- 判断润年 -->
<body>
<%!String y(int year) {
if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
return "该年是闰年";
} else {
return "该年不是闰年";
}
}%>
<%
String year = y(2023);
out.print(year);
%>
</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>
<%for(int i=1;i<=5;i++){ %>
<hr width="<%=i*100%>">
<%
} %>
</body>
</html>
