从String创建float(Create float from String)

从String创建float(Create float from String)

我有一个正则表达式\d+(?:[.,]\d+将十进制字符串与点或逗号匹配，如123.123或123,123因此该值有效。

现在我的问题是从String生成一个Float值，该值为123.123或123,123

I have a regex \d+(?:[.,]\d+ that matches decimal strings with either dot or comma, like 123.123 or 123,123 so the value is valid.

Now my problem is to generate a Float value from the String which is either 123.123 or 123,123

最满意答案

您可以使用以下代码。

String val = "123.123 "; float f = Float.parseFloat(val); String val = "123,123 "; // if other char(like comma) come, you can also write a regex to replace those set of char val = val.replace(",",".");// assuming comma is used for decimals float f = Float.parseFloat(val);

You can use the below code.

String val = "123.123 "; float f = Float.parseFloat(val); String val = "123,123 "; // if other char(like comma) come, you can also write a regex to replace those set of char val = val.replace(",",".");// assuming comma is used for decimals float f = Float.parseFloat(val);