build me a simple computer program

I was thinking, how about making a game where the computer plays noughts and crosses with a user? Could print a board like this: O | | X -------------- | O | X -------------- X | | O Each square on the board would be an object Class Square; properties would be location, and whether it's blank, has an X, or has an O The board would be another object. Class Board; The board will contain an ArrayList of 9 squares The board will have methods to tell if any of the squares form a line (ie if a player has won) The third object would contain the main() function, which would run the game. The program logic would be: Ask the user who goes first if the user goes first, ask for the user's move, then print the board if the machine goes first, make a programced move, then print the board Next, for each move, with user and machinealternating turns, ask for or make a move, check if anyone's won, if not go on to the next move