Length of the String without using length() method [closed]

Question

How can I find the length of a String without using the length() method of String class?

Answer 1

• str.toCharArray().length should work.

• Or how about:

  str.lastIndexOf("")

  Probably even runs in constant time :)

• Another one

  Matcher m = Pattern.compile("$").matcher(str);
  m.find();
  int length = m.end();
  

• One of the dumbest solutions: str.split("").length - 1

• Is this cheating: new StringBuilder(str).length()? :-)