<%@ page language="java" import="java.util.*"
contentType="text/html; charset=utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%!
String print1()
{
String s = "";
for (int i = 1; i <= 9; i++) {
for (int j = 1; j <= i; i++) {
s += i + "*" + j + "=" + (i * j);
}
s += "<br/>";
}
return s;
}
%>
<%=print1() %>
</body>
</html>
你写成I++ 改为j++
找出原因了,第二个循环里变量出错了