@@ -0,0 +1,276 @@
+package ru.alexandr;%0A%0A/**%0A * Calculate class.%0A * @author Alexandr Golubev (deed27@narod.ru)%0A * @since 24.11.2016%0A */%0A%0Apublic class Calculate %7B%0A%09/**%0A%09 * Main.%0A%09 * @param args - args.%0A%09 */%0A    public static void main(String%5B%5D args) %7B%0A%09System.out.println(%22Hello world!%22);%0A    %7D%0A%7D

add structure