I am having regex expression problem. need helps from regex experts! It's fairly simple but I can't get it to work.
I know if I want to check the starting of a text, I should use ^ and ending of the text, I should use $
I want to replace [quote]
to <a>quote</a>
.
This doesn't seems to work..
String test = "this is a [quote]"
test.replaceAll("^\\[", "<a>");
test.replaceAll("\\]$", "</a>");
I want the string to become "this is a <a>quote</a>"
..
If you want to replace [
and ]
with pair, you need to replace them in one time.
String test = "this [test] is a [quote]";
String result = test.replaceAll("\\[([^\\]]+)\\]", "<a>$1</a>");
^
implies that you are looking for something at the beginning of the string. However [
does not appear at the beginning of the string, so you will not have a match. Just do:
test.replaceAll("\\[", "<a>");
test.replaceAll("\\]", "</a>");
Also, you cannot modify a String in-place. you'll have to assign the output to something. You can do:
test = test.replaceAll("\\[", "<a>").replaceAll("\\]", "</a>");
That is if you still want to use the variable test
.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.