What is the Java code to find consonants in a string?

Answer 1

/**

* Prints all characters in str that are consonants.

*/

public static void printConsonants(final String str) {

System.out.println("Consonants in '" + str + "'");

for (final char ch : str.toCharArray()) {

// Remember that a consonant is any character that is not a vowel.

if (!isVowel(ch)) {

System.out.println(ch);

}

}

}

/**

* Prints all characters in str that are consonants, dismissing duplicates.

*/

public static void printUniqueConsonants(final String str) {

System.out.println("Consonants in '" + str + "'");

// Store consonants in a Set to avoid printing duplicates.

final Set<Character> charSet = new TreeSet<Character>();

for (final char ch : str.toCharArray()) {

// Remember that a consonant is any character that is not a vowel.

if (!isVowel(ch)) {

charSet.add(ch);

}

}

System.out.println(charSet);

}

/**

* Returns true if ch is a vowel.

*/

public static boolean isVowel(final char ch) {

return ch 'u';

}