Why does this Java regular expression work inconsistently to remove street numbers from US street addresses?

Question

I'm trying to cross out a street number from a mailing address.

I have a regex in Java:

address.replace("^\\s*[0-9]+\\s+","");

It works at this address:

301 West 23rd Street

doing this:

West 23rd Street

But when I apply it to this address, the address does not change:

70-50 69th Place

Instead, it should be:

69th Place

Any ideas?

Answer 1

Your regular expression does not match this string. Here is a regular expression explanation

^ Start of string. Matches successfully.
\\ s * Zero or more whitespace. Matches the empty string.
[0-9] + One or more digits. Matches "70".
\\ s + One or more whitespace. Fails to match.

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address = address.replace("^\\s*[0-9-]+\\s+", "");

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Answer 2

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Answer 3

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Answer 4

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