Replace multiple diff characters in String

I'm trying to replace all the special characters in a string with the escaped version.
The special characters for regex are: $ ^ + \ ?

I'm trying to do this so that I can send a string to the function below that is riddled with regex special characters, and get them replaced with the appropriate \ before the special character.
When I try to replace the characters with null (to delete rather than replace) it works great.
But I'd like to keep the characters in there with the \ in front.

      public static String formatter(String name){
            final String[] specialChar={"\\\\","\\^","\\+","\\$","\\?"};      //\\ Needs to be first.
//            StringBuffer sbuff = new StringBuffer(name);
            String tmpString = name;
            for (String sChar : specialChar) {
                  String replaceWith = "\\"+sChar;
              System.out.println("SChar is:"+sChar);
              tmpString = name.replaceAll(sChar,replaceWith);
              System.out.println("tmpString is:"+tmpString);
                  name = tmpString;
        }
            return tmpString;
      }

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