Answer:
import java.util.Scanner;
public class Acronym {
public static String buildAcronym(String phrase) {
String[] separatedWords = phrase.split(" ");
String acronymAlphabets = "";
for(int i = 0; i < separatedWords.length; ++i) {
if(Character.isUpperCase(separatedWords [i].charAt(0))) {
acronymAlphabets += Character.toUpperCase(separatedWords [i].charAt(0));
}
}
return acronymAlphabets;
}
public static void main(String[] args) {
Scanner userInput = new Scanner(System.in);
System.out.println(buildAcronym(userInput.nextLine()));
}
}
Explanation: