Replace Space to Hyphen

Question

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

String replaceText = \"AT AT\";
replaceText.replace(\' \', \'-\');

Answer 1

Strings are immutable.

You need to save the value returned by replace(). If you want to replace more than one occurrence, use replaceAll().

String replaceText = "AT AT";
replaceText = replaceText.replaceAll(" ", "-");

As @Mark Peters points out in the comments, replace(Char, Char) is sufficient (and faster) for replacing all occurrences.

String replaceText = "AT AT";
replaceText = replaceText.replace(' ', '-');

---

In case this fact bothers you: immutability is a Good Thing.