Extract digits from string - StringUtils Java

Question

I have a String and I want to extract the (only) sequence of digits in the string.

Example: helloThisIsA1234Sample. I want the 1234

It\'s a given that the s

Answer 1

Extending the best answer for finding floating point numbers

       String str="2.53GHz";
       String decimal_values= str.replaceAll("[^0-9\\.]", "");
       System.out.println(decimal_values);