What is a compilation error? (ANSWERED)

Question

my code has an output of compilation error and i dont know what that is so i cant fix it. help
https://code.sololearn.com/cWGZdg9BqK9F/?ref=app

Answer 1

Here's a quick working solution to iron out all the compilation errors:

public class Program {
public static void main(String[] args) {
String[ ] letter = { "A","B","C","D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"};
int x = -1;
int y = 0;
while (y<26) {
x++;

System.out.println(letter [y]);
System.out.println(letter [x]);
if (x==25) {
x-=26;
y++;
}
}
}
}

Answer 2

compilation error happens when the compiler cannot understand your instructions or you are trying to do something illegal(from the compilers point of view)