Java 8 program that counts the number of vowels and consonants in a given string

In this short article, we will write a Java 8 program to counts the number of vowels and consonants in a given string.
We will use Java 8 lambda expression and stream API to write this program.

Java 8 program counts the number of vowels and consonants in a given string

package com.java.tutorials.programs; import java.util.Arrays; import java.util.HashSet; import java.util.Set; /**  *   * @author https://www.sourcecodeexamples.net/  *  */ public class Java8Program { private static final Set < Character > allVowels = new HashSet(Arrays.asList('a', 'e', 'i', 'o', 'u')); public static void main(String[] args) { String str = "sourcecodeexamples"; long vowels = str.chars() .filter(c - > allVowels.contains((char) c)) .count(); long consonants = str.chars() .filter(c - > !allVowels.contains((char) c)) .filter(ch - > (ch >= 'a' && ch <= 'z')) .count(); System.out.println("vowels count => " + vowels); System.out.println("consonants => " + consonants); } }
Output:
vowels count => 8 consonants => 10

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