<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>My first JSP</title>
</head>
<body>
我的第一个项目 设计1-100所有偶数<br>
<%
int sum = 0;
for(int a = 1;a < 100;a++){
if(a % 2 == 0){
sum += a;
}
}out.println(sum);
%>
</body>
</html>