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[] ” within the match/Subexpression “ [] Matches all specified characters. Therefore, to match all letters, specify the vowels as shown below-
[aeiouAEIOU]
import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class MatchVowels { public static void main(String args[]) { String regex = "[aeiouAEIOU]"; System.out.println("Enter input string:"); Scanner sc = new Scanner(System.in); String input = sc.nextLine(); //Compile Regular Expression Pattern.compile(regex); //Compile Regular Expression Pattern pattern = Pattern.compile(regex); Matcher matcher = pattern.matcher(input); if(matcher.find()) { System.out.println("The input string contains vowels"); } else { System.out.println("The input string does not contain vowels"); } } }
Output Result
Enter input string: hello how are you welcome The input string contains vowels
import java.util.Scanner; public class Test { public static void main(String args[]) { String regex = "[aeiouAEIOU]"; System.out.println("Enter input string:"); Scanner sc = new Scanner(System.in); String input = sc.nextLine(); boolean result = input.matches(regex); if(result) { System.out.println("The input string contains vowels"); } else { System.out.println("The input string does not contain vowels"); } } }
Output Result
Enter input string: hello how are you welcome The input string does not contain vowels