Suppose I'm supplied with a String which is like "$123,456,56.25"
or "123'456.67"
or something similar to this (with digits and a decimal point and some seperator like ,
or '
or something else which is not predictable). I need to write a method which takes an argument like the one above and returns a String like "12345656.25"
or "123456.67"
respectively.
Could you please suggest the most efficient and readable code to achieve this?
Note: I'm aware of going through each indexes and checking for whether its retunrs true
for Character.isDigit(charAtInedx)
or if(charAtInedx == '.')
I'm looking for a more optimized solution both in terms of efficiency and readability
Thanks.
String newStr = oldStr.replaceAll("[^\\d.]+", "")
这将删除任何不是数字或句点的字符
If you want to handle monetary values correctly, you will want to have a look at the NumberFormat class, specifically for your case NumberFormat.parse(String) . The following article also discusses the problems (and solutions) to handling money in Java:
http://www.javapractices.com/topic/TopicAction.do?Id=13
Other related classes include: Currency and of course BigDecimal .
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