Example: Remove Vowels using replaceAll in Java

// Remove Vowels using replaceAll
import java.util.Scanner;

// Main class containing the entry point of the program
public class Main {
    public static void main(String[] args) {
        // Step 1: Define the input string
        String originalString = "Programming Is Fun";
        System.out.println("Original String: " + originalString);

        // Step 2: Define the regular expression for vowels and replace
        // "[aeiouAEIOU]" matches any single lowercase or uppercase vowel.
        // The replaceAll method substitutes all matched characters with an empty string "".
        String stringWithoutVowels = originalString.replaceAll("[aeiouAEIOU]", "");

        // Step 3: Print the result
        System.out.println("String without Vowels: " + stringWithoutVowels);

        // Example with user input
        Scanner scanner = new Scanner(System.in);
        System.out.print("\nEnter another string: ");
        String userInput = scanner.nextLine();
        String processedInput = userInput.replaceAll("[aeiouAEIOU]", "");
        System.out.println("Processed String: " + processedInput);
        scanner.close();
    }
}