Пример шаблони

import java.util.Scanner;

public class Demo {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String name = scanner.nextLine(); //име
        String lastName = scanner.nextLine(); //фамилия
        int age = Integer.parseInt(scanner.nextLine()); //възраст
        //печатам: "I am <name> <lastName> on <age> years old."
        //шаблони
        //%d -> int
        //%f -> double
        //%s -> String
        System.out.printf("I am %s %s on %d years old.", name, lastName, age);

    }
}