fork(4) download
copy 
  1. <%@ page language="java" contentType="text/html; charset=utf-8"
  2. 	import="java.io.*" import="java.util.*" import="java.text.*"%>
  3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://w...content-available-to-author-only...3.org/TR/html4/loose.dtd">
  4. <html>
  5. <head>
  6. <title>Insert title here</title>
  7. <link rel='stylesheet' type='text/css' href='round.css'>
  8. </head>
  9. <body>
  10. 	<FORM METHOD=post action="GoodsAndRates.jsp">
  11. 		Курс <INPUT TYPE=TEXT NAME="rate"> <INPUT TYPE=SUBMIT
  12. 			value="Пересчитать">
  13. 	</FORM>
  14. 	<%
  15. 	    request.setCharacterEncoding("UTF-8");
  16.  
  17. 	    final NumberFormat nf = NumberFormat.getInstance();
  18. 	    nf.setMaximumFractionDigits(2);
  19. 	    nf.setMinimumFractionDigits(2);
  20.  
  21. 	    try {
  22. 			String rateParameter = request.getParameter("rate"); // как не дожидаться этого параметра? и продолжать работу
  23. 			Double rate = Double.parseDouble(rateParameter);
  24.  
  25. 			Scanner sc = null;
  26. 			String real_filename = pageContext.getServletContext()
  27. 				.getRealPath("/goods.txt");
  28. 			try {
  29. 			    sc = new Scanner(new File(real_filename));
  30. 			} catch (Exception e) {
  31. 			    e.printStackTrace();
  32. 			}
  33. 			Map<String, Double> goods = new TreeMap<String, Double>();
  34.  
  35. 			while (sc.hasNext()) {
  36. 			    String line = sc.nextLine();
  37. 			    String[] goodsData = line.split("=");
  38. 			    goods.put(goodsData[0], Double.parseDouble(goodsData[1])
  39. 				    * rate);
  40. 			}
  41. 	%>
  42. 	<b>Список товаров</b>
  43. 	<br>
  44. 	<table cellpadding=3 cellspacing=3 bgcolor=9AFF92>
  45. 		<tr bgcolor=3CE022>
  46. 			<th>Товар</th>
  47. 			<th>Цена(бел. руб.)</th>
  48. 		</tr>
  49. 		<tr>
  50. 			<td>
  51. 				<%
  52. 				    //iterating over keys only
  53. 						for (String key : goods.keySet()) {
  54. 						    out.println(key + "<br>");
  55. 						}
  56. 				%>
  57.  
  58. 			<td>
  59. 				<%
  60. 				    //iterating over values only
  61. 						for (Double value : goods.values()) {
  62. 						    out.println(nf.format(value) + "<br>");
  63. 						}
  64. 				%>
  65.  
  66. 	</table>
  67. 	<%
  68. 	    } catch (NumberFormatException nfe) {
  69. 			out.println(nfe.toString());
  70. 	    } catch (NullPointerException npe) {
  71. 			out.println(npe.toString());
  72. 	    } catch (Exception e) {
  73. 			out.println(e.toString());
  74. 	    }
  75. 	%>
  76.  
  77. </body>
  78. </html>
Not running #stdin #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/gQNqo
language:
Java (HotSpot 12)
created:
14 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!