仅在Java字符串中删除括号

Question

In my java string eg:hello(world) is there. I want to remove the paranthesis alone the result should be helloworld .

I tryied the regexpression like this

String strFunction = Hello(world);

strFunction.replaceAll("\\)\\(\\s+", "");

But it is notworking,please help it out

Answer 1

Strings are immutable, so you need to re-assign the result back to the original string. Also, there is some issue with your regex. Currently it will try to replace those brackets if they occur back to back.

You need to use a character class:

strFunction = strFunction.replaceAll("[)(]", "");

Answer 2

strFunction = strFunction.replaceAll("[(\\s)]", "");

• Assign the result back to your string reference.
• Use a character class [] . (Note: you don't need to escape () in there.)

Answer 3

它消除所有括号，无论它们是否平衡。

String replaced = "(4+5)+6".replaceAll("[()]", "");