将浮点值1000000.1解析为Java中的String

Question

In my web application I have a version field that take float input values. But when using values like 1000000.1 (or larger) for the version it displays like 1.0E7. i tried several methods in Float wrapper class. but result still the same.

Thanks

Answer 1

Your problem is not in parsing but in formatting of your values. The value is correct and it is represented in java correctly. If you wish to change the format user either String.format() that provides C style formatting or java.text.NumberFormat.

Answer 2

System.out.printf("%f", Float.parseFloat("1.0E7")); outputs 10000000.000000

See http://ideone.com/3o6dO

Note that 1.0E7 is 1000000.0, not 1000000.1.

Answer 3

它可能与您的输出格式有关，因为1.0E7 == 10000000

Answer 4

我认为您正在寻找的是String.format(locale, msg, args)方法。

Answer 5

Use String.valueOf(floatNumber)
Suggest use double instead of float