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

Use

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

A few errors in your code :

• replaceAll takes strings, not chars
• the + char must be escaped as the first argument is a regular expression (and \ itself must be escaped in java string literals)
• you must take the return of the function : as String is immutable the function doesn't change it but returns another string