programming-challenges/templates/solution/java/Solution.java

import java.util.Scanner;

public class Solution {
    public static void main(String[] args) {
        String line;
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextLine()) {
            line = scanner.nextLine();
            System.out.println("Hello, " + line + "!");
        }
        scanner.close();
    }
}