Regular expressions

public class ProductDataExample {
	public static void main(String[] args) {
    	String messyProduct = "Headphones *(Wireless)*";
        
        // Complete the regex pattern to exclude lower or upper case letters or spaces
        String regex = "[^____]";
        
        // Remove any character that is not a letter or space
        String cleanedProduct = ____.____(regex, "");
        System.out.println(cleanedProduct);
    }
}