03. Count Uppercase Words

package Lekciq;

import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.function.Predicate;
import java.util.stream.Collectors;

public class CountUppercaseWords {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);


        // Read input line
        String input = scanner.nextLine();

        // Define a predicate to check if a word starts with an uppercase letter
        Predicate<String> startsWithUppercase = word -> !word.isEmpty() && Character.isUpperCase(word.charAt(0));

        // Split the input into words and filter using the predicate
        List<String> uppercaseWords = Arrays.stream(input.split("\\s+"))
                .filter(startsWithUppercase)
                .collect(Collectors.toList());

        // Print the count of words that start with an uppercase letter
        System.out.println(uppercaseWords.size());

        // Print each word that starts with an uppercase letter
        uppercaseWords.forEach(System.out::println);
    }
}