public class Sample { public static void main(String[] args) { var string = "123"; var result = string.chars() .map(c -> c - '1' + 'A') .collect(StringBuilder::new, (sb, c) -> sb.append((char)c), StringBuilder::append) .toString(); System.…

import java.util.Scanner; public class Sample { public static void main(String[] args) { var sc = new Scanner(System.in); sc.useDelimiter(""); while(sc.hasNext()) { var c = sc.next(); System.out.print(c); } } }