从文件中读取浮点数 [英] Read float numbers from file

问题描述

如何从文件中读取浮点数？

How to read float numbers from file?

  0.00000E+00  2.12863E-01
  1.00000E-02  2.16248E-01
  2.00000E-02  2.19634E-01

在文件中2第一列数字之前和数字之间的空格。我有错误：

in the file 2 spaces before the first column of numbers and between numbers. I have errors instantly:

s = new Scanner(new File("P0"));
while (s.hasNext()) {
    float x = s.nextFloat();
    float y = s.nextFloat();

    System.out.println("x = " + x + ", y = " + y);
}

推荐答案

所以，我理解我的错误。我需要使用

So, I understand my mistake. I need to use

s.useLocale(Locale.US);

因为Scanner互换。作为小数分隔符，在我的语言环境中（默认）它是，。另请注意，根据

because that Scanner interpets "." as decimal separator, in my locale (default) it is ",". Also note that both 1.1 and 3 (integer) are recognized by nextDouble

//可识别1.1和3（整数）阅读 - 双数字 - 来自混合文件？rq = 1title =此链接>此链接

//according to this link

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