1.
<body>
<%
Calendar c=Calendar.getInstance();
int h=c.get(Calendar.HOUR);
int m=c.get(Calendar.MINUTE);
int s=c.get(Calendar.SECOND);
String a="";//java注释
if(h>=0&&h<=12){
a="上午好";
}
if(h>=13&&h<=17){
a="下午好";
}
if(h>=18&&h<=23){
a="晚上好";
}
%>
<tr align="center"><td>现在时间是：<%=h %>:<%=m %>:<%=s %>--<%=a %></td></tr>
</body>
2.
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import = "java.util.*" %>
<%@ page import = "java.text.*" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%!
public String year(int theYear) {
return "不是";
}
%>
<!-- 显示是否为闰年 -->
<h2>
2023 <%= year(2023) %> 闰年
</h2>
</body>
</html>
3.
<%@ page import="java.util.Date" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<body>
<h2>
</h2>
</body>
<%--jsp注释--%>
<%
for (int i = 100; i <= 500; i = i+100) {
%>
<hr width="<%=i%>" color="red">
<%
}
%>
</html>
