String's split returning unexpected value

Question

System.out.println(Arrays.toString("1.1.1".split(".")));

This prints out an empty array. What gives? To me, it should print out "[1, 1, 1]". Instead, it prints out "[]". It doesn't make sense to me.

The split method takes a regular expression, so guess what "." matches? — azurefrog, Jun 25 '15 at 21:45

score 3 · Answer 1 · answered Jun 25 '15 at 21:45

3

. is wildcard character in regex.

use - split("\\.")

answered Jun 25 '15 at 21:45

Raman Shrivastava

2

Ya I just figured this out by searching, so I am deleting this question – Hank Jun 25 '15 at 21:46
1

@Hank don't do that. Other people might be interested in the question. – Jashaszun Jun 25 '15 at 21:46
Nevermind, I can't delete it so I guess it shall stay. – Hank Jun 25 '15 at 21:46
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@Hank You cannot delete a question with an upvoted answer, actually. – azurefrog Jun 25 '15 at 21:46
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@Hank, please try to search for an answer before posting a question next time. I usually google *site:stackoverflow.com java * – aioobe Jun 25 '15 at 21:48

1 Answers1