HumanPlayer.java

package tictactoe;

import java.util.Scanner;

public class HumanPlayer implements Player {
	private Scanner scanner;
	public char playerchar; 
	public HumanPlayer(Scanner s, char c){
		scanner = s;
		playerchar = c;
	}
	public boolean makemove(ToeBoard tictac){
		int[] move = new int[2];
		boolean win = false;
		do{
			move = tictac.receiveMove(scanner);
		}while(tictac.checkmove(move)== false);
		tictac.updateboard(move, playerchar);
		win = tictac.checkwin(playerchar, move); 
		if(win == true){
				tictac.printBoard();
				System.out.println("\n Congratulations "+playerchar+", you won your game of Tic Tac Toe");
				return true;
				}
		else{
			tictac.printBoard();
			return false;
			}
	}

Player.java

package tictactoe;

public interface Player {
	public boolean makemove(ToeBoard b);
	}

	

RunGame.java

package tictactoe;

import java.util.Scanner;

public class RunGame {
	public static int choosenumberplayers(Scanner scanner){
		 	System.out.print( "Greetings, human, would you like to play against me or another player? Enter 1 for me or 2 for another player \n");
	        String input = scanner.nextLine();
	        int inputint = Integer.parseInt(input);
	        if(inputint == 1 || inputint == 2){
	        	return inputint;
	        }
	        else{
	        	System.out.print("This number is not accepted, please try again \n");
	        	inputint = choosenumberplayers(scanner);
	        	return inputint;
	        }
	        
	        
	}
	public static int ReadPlayer1or2(Scanner scanner){
    	
	    System.out.print( "Greetings, human, would you like to be player one or two? \n");
        String input = scanner.nextLine();
        int inputint = Integer.parseInt(input);
        return inputint;
	}
	public static int ReadDimensions(Scanner scanner){
    	
	    System.out.print( "Choose how many rows and columns you want to play with in your nxn game of tic-tac-toe\n");
        String input = scanner.nextLine();
        int inputint = Integer.parseInt(input);
        return inputint;
}
	public static void main(String[] args){
		
		Scanner scanner = new Scanner(System.in);
		int numberplayers = 0;
		int dimension = 0;
		boolean gamewon = false;
		dimension = ReadDimensions(scanner);
		numberplayers = choosenumberplayers(scanner);
		ToeBoard TB = new ToeBoard(dimension);
		TB.printBoard();
		System.out.println("");
		Player player1 = new HumanPlayer(scanner, 'X');
		Player player2 = new HumanPlayer(scanner, 'O');
		while(!gamewon){
			gamewon = player1.makemove(TB);
			if(gamewon == true){
				break;
			}
			gamewon = player2.makemove(TB);
		}
		
			
	
	}
}

ToeBoard.java

package tictactoe;

import java.awt.List;
import java.util.ArrayList;
import java.util.Scanner;

public class ToeBoard {
	int n; //nxn dimension board
	char[][] XOarray = new char[n][n];
	int numbermoves = 0;
	//initializes TicTacToe Board's dashes in between rows
	private String dashes(int n){
		int numberdashes = n*2;
		String dashline = "";
		for(int i=0; i<numberdashes; i++){
		dashline = dashline+"-";
		}
		return dashline;
	}
	//dash is now computed only once for each instance of the class
	String dash = dashes(n);
	public ToeBoard(int n){
		this.n =  n;
		this.XOarray = new char[n][n];
		this.dash = dashes(n);
		for (int i=0; i<n; i++){
			for(int j=0; j<n; j++){
				XOarray[i][j] = ' ';
				
			}
			
		}
	}
	
	 public ToeBoard(char[][] XOarray) {
         
         this.n = XOarray.length;
         this.dash = dashes(n);
         this.XOarray = new char[n][n];
         for (int i = 0; i < n; i++)
             for (int j = 0; j < n; j++)
                     this.XOarray[i][j] = XOarray[i][j];
     }

	public ToeBoard(ToeBoard A) { this(A.XOarray); }

	public void printBoard(){
		ToeBoard tictac = this;
		System.out.print("\n");
		
		for(int i=0; i<tictac.n; i++){
			
			System.out.print(tictac.XOarray[i][0]);
			for(int j=1; j<tictac.n; j++){
				System.out.print("|"+tictac.XOarray[i][j]);
			}
			if(i<tictac.n-1){
				System.out.print("\n"+tictac.dash+"\n");
			}
		}
	}
	public boolean checkmove(int[] playermove){
		ToeBoard tictac = this;
		int iposition = playermove[0];
		int jposition = playermove[1];
		if(iposition >= tictac.n || jposition >= tictac.n){
			System.out.println("You chose a position that does not exist, please try again");
			return false;
		}
		
		if(tictac.XOarray[iposition][jposition] == ' '){
			return true;
		}
		else{
			System.out.println("This position is already taken, please choose another.");
			return false;
		}
		
	}
	public int[] receiveMove(Scanner scanner){
			
			int[] move = new int[2];
			System.out.print("\nPlease choose the row that you want to place your move in.\n");
	        String input = scanner.nextLine();
	        int inputint = Integer.parseInt(input);
	        //array index starts at 0 so subtract one
	        move[0] = inputint-1;
	        System.out.print("\nPlease choose the column that you want to place your move in.\n");
	        input = scanner.nextLine();
	        inputint = Integer.parseInt(input);
	        //array index starts at 0 so subtract one
	        move[1] = inputint-1;
	        
		return move;
	}
	public void updateboard(int[] playermove, char playerchar){
		ToeBoard tictac = this;
		tictac.XOarray[playermove[0]][playermove[1]] = playerchar;
	}
	public boolean diagwin(char playerchar){
		ToeBoard tictac = this;
		//System.out.print(tictac.n);
		for(int i=0; i<tictac.n; i++){
			//guaranteed if else
			if(tictac.XOarray[i][i] != playerchar){
				return false;
			}
		}
		return true;
		}
	public boolean antidiagwin(char playerchar){
		ToeBoard tictac =this;
		for(int i=0; i<tictac.n; i++){
			if(tictac.XOarray[i][tictac.n-i-1] != playerchar){
				return false;
			}
		}
				return true;
		}
	public boolean verticalwin(char playerchar, int index){
		ToeBoard tictac = this;
		for(int i=0; i<tictac.n; i++){
			//guaranteed if else
			if(tictac.XOarray[i][index] != playerchar){
				return false;
			}
		}
				return true;	
	}
	public boolean horizontalwin(char playerchar, int index){
		ToeBoard tictac = this;
		for(int i=0; i<tictac.n; i++){
			//guaranteed if else
			if(tictac.XOarray[index][i] != playerchar){
				return false;
			}
		}
				return true;
			
		}
	public boolean checkwin(char playerchar, int[] move){
			ToeBoard tictac = this;
			boolean result = false;
		
		
			result = tictac.diagwin(playerchar);
			if(result == true){
				return result;
			}
			else{
			//System.out.println("usingverticalwin");
				result = tictac.antidiagwin(playerchar);
				if(result == true){
					return result;	
				}
				else{
					result = tictac.verticalwin(playerchar, move[1]);
					if(result == true){
						return result;
					}
					else{
						//System.out.println("usinghorizontalwin");
						result = tictac.horizontalwin(playerchar, move[0]);
						if(result == true){
						return result;
							}
						else{
							return false;
							}
					
					}
				}
			}
				
	}
	
	//assesses board for all possible moves using brute force
	public ArrayList<int[]> playablemoves(ToeBoard tictac){
		ArrayList<int[]> playable = new ArrayList<int[]>();
		int[] move = new int[2];
		for(int i=0; i<tictac.n; i++){
			for(int j=0; j<tictac.n; j++){
				if(tictac.XOarray[i][j] == ' '){
					move[0] = i;
					move[1] = j;
					playable.add(move);
					}
			}
		}
		return playable;
	}
	//Function plays all possible games
	
	
		

WinDrawLose.java

public class WinDrawLose {
	int[] move = new int[2];
	boolean win = false;
	boolean lose = false;
	boolean draw = false;
}