Get int from String, also containing letters, in Java
integer, java
Solution
Replace all non-digit with blank: the remaining string contains only digits.
Integer.parseInt(s.replaceAll("[\\D]", ""))
This will also remove non-digits inbetween digits, so `"x1x1x"` becomes `11`.
If you need to confirm that the string consists of a sequence of digits (at least one) possibly followed a letter, then use this:
s.matches("[\\d]+[A-Za-z]?")
Problem
How can I get the int value from a string such as `423e` - i.e. a string that contains a number but also maybe a letter? `Integer.parseInt()` fails since the string must be entirely a number.