Parsing currency strings in Java

Suppose I provide a string similar to "$123456,56.25" or "123'456.67" or something similar (with numbers and decimal points and some separators, or 'or other unpredictable things) I need to write a method that accepts parameters like the above and returns a string, such as "12345656.25" or "123456.67"

Could you please come up with the most effective and readable code to achieve this goal?

Note: I know to traverse each index and check whether its returnrs is character IsDigit (charatinedx) or if (charatinedx = = '.') I am looking for a more optimized solution in terms of efficiency and readability

thank you.

Solution

String newStr = oldStr.replaceAll("[^\\d.]+","")

String newStr = oldStr.replaceAll("[^\\d.]+","")

This will delete any characters that are not numbers or periods