Program to check vowel is present in a given String or not

	

    

    	


    
package com.demo;

public class ContainsVowelsOrNot {

	public static void main(String[] args) {

		//first string
		String str = "Java";
		System.out.println("Vowels is present : "+isVowelsPresent(str));
		//second string
		str = "bcd";
        	System.out.println("Vowels is present : "+isVowelsPresent(str));
	}

	private static boolean isVowelsPresent(String str) {
		
		if(str == null) {
        	throw new IllegalArgumentException();
        }
        
        return str.toLowerCase().matches(".*[aeiou].*");
	}