FUNCTIONS

13. Write a Java method that checks whether all the characters in a given string are vowels (a, e,i,o,u) or not. Return true if each character in the string is a vowel, otherwise return false

            class VowelCharacters
            {
               static boolean checkVowelCharacters(String str)
                 { 
                      str=str.toLowerCase();
                     for( char ch :str.toCharArray())
                       {
                          if( ch!='a' &&   ch!='e' &&   ch!='i' &&    ch!='o' &&    ch!='u')
                            {
                                return false;
                             }
                        }
                       return true;
              }
            
            public static void main(String st[])
             {
                 String str1="aeiou";
                 String str2="hello";
            
                     System.out.println(" Is "+ str1 + " Vowel: \n" + checkVowelCharacters(str1));
                    System.out.println(" Is "+ str2 + " Vowel: \n" +checkVowelCharacters(str2));
            }
            }
        

OUTPUT

            Is aeiou Vowel:
            true
             Is hello Vowel:
            false