View Code of Problem 43

import java.util.Scanner;

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

        StringBuilder builder = new StringBuilder();
        for(int i = 0;i<line.length();i++){
            char get = line.charAt(i);
            if(get >= 'A' && get<='z'){
                builder.append(get);
            }
        }
        System.out.println(builder.toString());
    }
}