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javajava.util.regexThe package provides various classes to find specific patterns in character sequences.
The package's Pattern class is the compiled representation of the regular expression. This class'smatcher()The method accepts a representation of the input stringCharSequenceThe object of the class, then returns a Matcher object, which matches the given string with the regular expression represented by the current (pattern) object.
import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class MatcherExample { public static void main(String args[]) { //Read string value Scanner sc = new Scanner(System.in); System.out.println("Enter input string"); String input = sc.nextLine(); //Regular expression to find vowels String regex = "[aeiou]"; //Compile the regular expression Pattern pattern = Pattern.compile(regex); //Retrieve the matcher object Matcher matcher = pattern.matcher(input); if(matcher.find()) { System.out.println("Given string contains vowels"); } else { System.out.println("Given string does not contain vowels"); } } }
Output Result
Enter input string RHYTHM Given string does not contain vowels