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

You're almost there. You just need quantifier:

str = str.replaceAll("^0+", "");

It replaces 1 or more occurrences of 0 (that is what + quantifier is for. Similarly, we have * quantifier, which means 0 or more), at the beginning of the string (that's given by caret - ^), with empty string.