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BJP4 Exercise 5.24: isAllVowels

Language/Type: Java method basics return Strings
Author: Marty Stepp (on 2016/09/08)

Write a method named isAllVowels that returns whether a String consists entirely of vowels (a, e, i, o, or u, case-insensitively). If every character of the String is a vowel, your method should return true. If any character of the String is a non-vowel, your method should return false. Your method should return true if passed the empty string, since it does not contain any non-vowel characters.

For example, here are some calls to your method and their expected results:

Call Value Returned
isAllVowels("eIEiO") true
isAllVowels("oink") false
Type your solution here:


This is a method problem. Write a Java method as described. Do not write a complete program or class; just the method(s) above.

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