Use string methods to find and count vowels in a string?

Question

I have this problem for homework (I\'m being honest, not trying to hide it at least) And I\'m having problems figuring out how to do it.

Given the following declarat

Answer 1

This could/should be a one-liner

System.out.println("the count of all vowels: " + (phrase.length() - phrase.replaceAll("a|e|i|o|u", "").length()));

and its String only methods