[Q#19066582][A#19066796] How to find vowels in a string in java program

https://stackoverflow.com/q/19066582

What is the java coding to find out vowels in a string? How to use OR operator in java? because the symbol " || " is not taken while i executing the java program.

Answer

https://stackoverflow.com/a/19066796

try the below code The program iterats over the given string and check if each character is an vowel

The symbol '||' can be used as OR, below program is an example Note: it will match only lower case vowels

APIzation

public class Test {

    public static void main(String[] args) {    
        String str ="This is a test";
        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')) {
                System.out.println(" The String contains " + str.charAt(i));
            }
        }
    }
    }

package com.stackoverflow.api;

public class Human19066796 {

  /**
   * Get lower case vowels from string
   * @param str Input string
   * @return Array of vowels
   */
  public static char[] getVowelsFromString(String str) {
    char[] vowels = new char[str.length()];

    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')
      ) {
        vowels[vowels.length + 1] = str.charAt(i);
      }
    }

    return vowels;
  }
}

package com.stackoverflow.api;

/**
 * How to find vowels in a string in java program
 *
 * @author APIzator
 * @see <a href="https://stackoverflow.com/a/19066796">https://stackoverflow.com/a/19066796</a>
 */
public class APIzator19066796 {

  public static void findVowel(String str) {
    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')
      ) {
        System.out.println(" The String contains " + str.charAt(i));
      }
    }
  }
}