Java Examples: Print out all vowels contained in the string.

Question:

How to read string and print out all vowels contained in the string.

Code:

import java.util.Scanner;
 
public class GetVowels {
  public static void main(String[] args) {
 
    String vowels = "AEIOUaeiou";
    System.out.print("Enter a string: ");
    Scanner in = new Scanner(System.in);
    String str = in.nextLine();
    for(int i=0;i<str.length();i++){
      String onechar = str.substring(i,i+1);
      if( vowels.indexOf(onechar) != -1){
        System.out.print(onechar);
      }
    }
    System.out.println();
  }
}

Output:

$ java GetVowels
Enter a string: abcDEFghi         
aEi