Possible Duplicate:
Wrong output using replaceall
If I have string:
String test = "replace()thisquotes";
test = test.replaceAll("()", "");
the test result is still: test = "replace()thisquotes"
so () is not replaced.
Any ideas?
-
I would like to have: replacethisquotesolidev– olidev2011-05-26 08:20:43 +00:00Commented May 26, 2011 at 8:20
Add a comment
|
6 Answers
You don't need regex, so use:
test.replace("()", "")
Comments
As others have pointed out, you probably want to use String.replace in this case as you don't need regular expressions.
For reference however, when using String.replaceAll, the first argument (which is interpreted as a regular expression) needs to be quoted, preferably by using Pattern.quote:
String test = "replace()thisquotes";
test = test.replaceAll(Pattern.quote("()"), "");
// ^^^^^^^^^^^^^
System.out.println(test); // prints "replacethisquotes"
1 Comment
user102008
"the first argument ... needs to be quoted" in addition, the second argument also needs to be quoted for replacement stuff
The first argument of replaceAll function is a regular expression. "(" character is a special character in regular expressions. Use this :
public class Main {
public static void main(String[] args) {
String test = "replace()thisquotes";
test = test.replaceAll("\\(\\)", "");
System.out.println(test);
}
}
Comments
You have to escape () as these are characters reserved for regular exressions:
String test = "replace()thisquotes";
test = test.replaceAll("\\(\\)", "");
Comments
test = test.replaceAll("\\(\\)", "").
Java replace all uses regular expressions so in your example "()" is an empty group, use escape character '\".
Comments
You have to quote your String first because parenthesis are special characters in regular expressions. Have a look at Pattern.qutoe(String s).
test = test.replaceAll(Pattern.quote("()"), "");
Comments
