带字符串替换的Java正则表达式

Question

I Need help with Java Regular Expressions?

I have a String "TA520" and "TA011" and I want to get the number without the leading digit using regular expressions. So I need the "520" and the "11" without the leading 0 digits. I have the expression aString = aString.replace("TA0* , ""); but this doesn't work. How would I do this with regular expressions in Java? Thank you.

Answer 1

The problem here is that String.replace does not use regular expressions.

You need to use String.replaceAll .

aString.replaceAll("^TA0*", "")

or alternatively, using replaceFirst :

aString.replaceFirst("^TA0*", "")

This strips away the leading "TA" plus any optional leading zeros.