<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="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 a = ""; for (int i = 1; i <=10; i++) { for (int j = 1; j <=10-i; j++) { //输出空格 a+= "  "; } for(int b = 1; b<=2*i-1;b++) { //输出星号 a+="*"; } a+="<br>" ; } %> <%=a %> </body> </html>
原文：http://www.cnblogs.com/zzyu/p/5613281.html