Is StringUtils.isNumeric() method specification logically correct?

Question

Apache's StringUtils.isNumeric() method specification says:
Checks if the String contains only unicode digits. A decimal point is not a unicode digit and returns false. Null will return false. An empty String ("") will return true.

Is this logically right? Why do they see empty string as numeric?

user_3416897 · Answer

As of Commons Lang 3.5, NumberUtils.isCreatable is the way to do this. See this answer for a more detailed description.

Is StringUtils.isNumeric() method specification logically correct?

6 Answers