从JTable解析的双打的总和 [英] Sum of Doubles that where parsed from a JTable

问题描述

如何获得的双重数值从 JTable 解析的？

How to get the sum of Doubles that where parsed from a JTable?

我正在建立一个客户端/服务器应用程序，我被困在一个小问题。

I'm Building a Client/Server Application, and I'm Stuck on a Little issue.

我想得到值的总和在 JTable 中的列中，此列包含 String 对象，其中＃，## 格式，所以当我尝试用一​​个循环解析它们加倍，我得到这个错误：

I want get the sum of values of a column in a JTable, this column contains String objects with #,## format, so when I try to parse them into doubles with a loop I get this error:

java.lang.NumberFormatException: For input string: "0,55"

这里是$ c> JTable image：

Here is the JTable image:

这里是我到目前为止尝试的代码：

And here is the code that I tried so far:

    private void jButton10ActionPerformed(java.awt.event.ActionEvent evt)    {                                          

    Double summl = 0.0;

    for(int i = 0; i < jTable1.getRowCount(); i++){
        summl=summl+Double.parseDouble(jTable1.getValueAt(i,5).toString());
    }
     System.out.println("summl = "+summl);
   }  

推荐答案

我认为问题是数字中的逗号。您应该尝试使用 NumberFormat class。

I think the problem is with the comma in the number. You should try to parse the numbers using NumberFormat class.

EG：

public static void main(String[] args) {
        NumberFormat nf = NumberFormat.getInstance(Locale.FRENCH); //Set the proper locale here

        try {
            Double myDouble = (Double)nf.parse("0,55");
            System.out.println(myDouble);
        } catch (ParseException e) {
            e.printStackTrace();
        }

    }

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