Every time i try to split the string "hello*world" using s.split("*"); I get a PatternSyntaxException.
I have tried using s.split("\*"); but that gives me another error. Im sure this is something simple.
How do i stop this?
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2 Answers
* is a meta-character in regular expressions used as a wildcard quantifier to match zero of more characters
Try using 2 backslash characters
s.split("\\*");
2 Comments
Rong Nguyen
I think you should include this: Meta-character
<([{\^-=$!|]})?*+.>
Rekin
Or use
Pattern.quote() or the Matcher.quoteReplacement() equivalent.The split method takes a regular expression as the argument, not a normal string. The * has special meaning in regular expressions. If you want to split on a literal *, you have to escape it with a backslash. But the backslash is also an escape character in Java string literals, so you have to escape the backslash too by using two backslashes:
s.split("\\*")
