replace all + with -

Question

I am trying to replace a + character into a hyphen I have in my string.

String str = \"word+word\";
str.replaceAll(\'+ \', \'-\');
         


        

Answer 1

The replaceAll function takes a regular expression as its first argument. It so happens that + is a special character in regular expression language. Try replacing + with \\+. This will escape the plus sign, thus making the code to treat it like a normal character.

Also, the replaceAll method yields a string, so that will not work. Try doing:

String str = "word+word";
str = str.replaceAll("\\+ ", "-");