regex to strip leading zeros treated as string

Question

I have numbers like this that need leading zero\'s removed.

Here is what I need:

00000004334300343 -> 4334300343

000

Answer 1

If you know input strings are all containing digits then you can do:

String s = "00000004334300343";
System.out.println(Long.valueOf(s));
// 4334300343

Code Demo

By converting to Long it will automatically strip off all leading zeroes.