Beginner and not understanding whats wrong

"import becker.robots*;































public class GoRoundSquare































{































public static void main(String[] args)































{































// Set up the initial situation































City ny = new City();































Robot karel = new Robot(ny, 0, 2, Direction.WEST);































Wall w1 = new Wall(ny, 1, 1, Direction.WEST);































Wall w2 = new Wall(ny, 2, 1, Direction.WEST);































Wall w3 = new Wall(ny, 2, 1, Direction.SOUTH);































Wall w4 = new Wall(ny, 2, 2, Direction.SOUTH);































Wall w5 = new Wall(ny, 2, 2, Direction.EAST);































Wall w6 = new Wall(ny, 1, 2, Direction.EAST);































Wall w7 = new Wall(ny, 1, 2, Direction.NORTH);































Wall w8 = new Wall(ny, 1, 1, Direction.NORTH);































// Direct the robot to the final situation































karel.move();































karel.move();































karel.turnLeft();































karel.move();































karel.move();































karel.move();































}































}"

that's the exact code im using there and the problem is on line 1 with that error message