如何在Java中替换Curly大括号？

Question

I am getting error when try to replace regular expression in java.

for example:

String h = "{hiren:}";

h=h.replaceAll(":}", ":\"\"}");

Please give me solution. Thanks

Answer 1

You need to double-escape some special characters in Pattern s.

String#replaceAll takes regular expressions, hence:

String h = "{hiren:}"; h=h.replaceAll(":\\}", ":\"\"}");

Otherwise, you can use String#replace with no regular expression nor escaping needed.

String h = "{hiren:}"; h=h.replace(":}", ":\"\"}");

It's a commonly mistaken assumption to believe String#replace will not replace all occurrences.