第二次课
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%!public int continueSum(int start,int end){
int sum=0;
for(int i=start;i<=end;i++)
sum=sum + i;
return sum;
}%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>123</title>
</head>
<body>
<script type="text/javascript">
var userTime = new Date();
var hour = userTime.getHours();
var minute = userTime.getMinutes();
document.write("浏览器时间:"+hour + ":" + minute);
</script>
<%
Date d = new Date();
int hour = d.getHours();
int minute = d.getMinutes();
out.print("服务器时间:"+hour + ":" + minute);
if (hour >= 0 && hour <= 12) {
out.print("上午好");
} else if (hour >= 13 && hour <= 17) {
out.print("下午好");
} else {
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
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>123</title>
</head>
<body>
<%! public void run(int year){
if((year%4==0&&year%100!=0)||(year%400==0)){
System.out.print(year+"是闰年");
}
else{
System.out.print(year+"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
<hr width="<%=i%>"
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>123</title>
</head>
<body>
<%for(int i=1;i<=5;i++){ %>
<hr width="<%=i*100%>">
<%
} %>
</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
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%!public int continueSum(int start, int end) {
int sum = 0;
for (int i = start; i <= end; i++)
sum = sum + i;
return sum;
}%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>123</title>
</head>
<body>
<script type="text/javascript">
var userTime = new Date();
var hour = userTime.getHours();
var minute = userTime.getMinutes();
document.write("浏览器时间:"+hour + ":" + minute);
</script>
<%
/*
Date d = new Date();
int hour = d.getHours();
int minute = d.getMinutes();
out.print("服务器时间:"+hour + ":" + minute);
if (hour >= 0 && hour <= 12) {
out.print("上午好");
} else if (hour >= 13 && hour <= 17) {
out.print("下午好");
} else {
out.print("晚上好");
}
*/
%>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>123</title>
</head>
<!-- HTML注释 -->
<body>
<%! public void run(int year){
if((year%4==0&&year%100!=0)||(year%400==0)){
System.out.print(year+"是闰年");
}
else{
System.out.print(year+"不是闰年");
}
} %>
<% int year=2023;
run(year);
%>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>123</title>
</head>
<body>
<%-- jsp的注释 --%>
<%for(int i=1;i<=5;i++){ %>
<hr width="<%=i*100%>">
<%
} %>
</body>
</html>
