Why is the following code wrong? I copied it from the article that was supposed to teach me. public class Solution //swapped "house" for "solution { public static void main (String[] args) //there is never explained what exactly this line do ... { System.out.println("Amigo is very smart"); // commentary number one } } //commentary number one: since every command has to be written on a new line i did add a line with the print command here and swapped "Robots are friends to humans" with "Amigo is very smart", sounds logical enough to me. What else am i supposed to do? The error says: Be sure that you are displaying the text on the console. The output is too short. Check the case of the letters. Uppercase and lowercase letters are considered different.