Count number of vowels in string in java

• In java, we can get total number of vowels in string and also get total count of each vowel in given string by using for loop and switch like below:

Program to get number of vowels in string:

package Sample;

public class FindVowels {

public static void main(String[] args) {

String str = "keeplearning";

int count = 0;

for (int i = 0; i < str.length(); i++) {

if (str.charAt(i) == 'a' || str.charAt(i) == 'e' || str.charAt(i) == 'i' || str.charAt(i) == 'o' || str.charAt(i) == 'u') {

count++;

}

}

System.out.println("Number of vowels in string=" + count);

int aCount = 0;

int eCount = 0;

int iCount = 0;

int oCount = 0;

int uCount = 0;

for (int i = 0; i < str.length(); i++) {

char c = str.charAt(i);

switch (c) {

case 'a':

aCount++;

break;

case 'e':

eCount++;

break;

case 'i':

iCount++;

break;

case 'o':

oCount++;

break;

case 'u':

uCount++;

break;

}

}

System.out.println("Number of vowel a count in string=" + aCount);

System.out.println("Number of vowel e count in string=" + eCount);

System.out.println("Number of vowel i count in string=" + iCount);

System.out.println("Number of vowel o count in string=" + oCount);

System.out.println("Number of vowel u count in string=" + uCount);

}

}

Output:

get number of vowels in string

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