Below is the basic structure of Othello game in java. Please note it's a simple command line version of the game, so the UI is very simple, also note that this game is not optimized and does not include complex features such as AI, multiplayer, etc. ```java public class Othello { private static final char EMPTY = '.'; private static final char BLACK = 'B'; private static final char WHITE = 'W'; private int rows, cols; private char[][] board; private char currentPlayer; public Othello(int rows, int cols) { this.rows = rows; this.cols = cols; this.board = new char[rows][cols]; this.currentPlayer = BLACK; this.initializeBoard(); } private void initializeBoard() { if(rows>2 && cols>2 && rows%2==0 && cols%2==0){ board[rows/2-1][cols/2-1] = WHITE; board[rows/2][cols/2] = WHITE; board[rows/2][cols/2-1] = BLACK; board[rows/2-1][cols/2] = BLACK; } else System.out.println("Invalid size"); } private void switchPlayer() { if(this.currentPlayer == BLACK) this.currentPlayer = WHITE; else this.currentPlayer = BLACK; } private boolean placePiece(int row, int col) { if( this.board[row][col]!= EMPTY ){ System.out.println("That spot is already occupied."); return false; } boolean anyLegalMove = false; for(int r = -1; r <= 1; r++){ for(int c = -1; c <= 1; c++){ boolean canFlip = false; for(int dr = row - r, dc = col - c; dr >= 0 && dr < rows && dc >= 0 && dc < cols && this.board[dr][dc]!= EMPTY && this.board[dr][dc]!= this.currentPlayer; dr -= r, dc -= c) if(this.board[dr][dc] == this.currentPlayer) canFlip = true; else if(canFlip){ this.board[row][col] = this.currentPlayer; for(dr = row - r, dc = col - c; dr!= row || dc!= col; dr -= r, dc -= c) this.board[dr][dc] = this.currentPlayer; break; } } } if(canFlip == false){ System.out.println("That move is illegal."); return false; } this.switchPlayer(); return true; } public void play(){ while(canPlacePiece()){ drawBoard(); System.out.println("Current player: " + this.currentPlayer); //Handle user input here //Assume that 0-based index is used int row = 0, col = 0; if(!placePiece(row, col)) { return; } } drawBoard(); determineWinner(); } private boolean canPlacePiece(){ for(int r=0; r whiteCount) System.out.println("Black wins!"); else if (whiteCount > blackCount) System.out.println("White wins!"); else System.out.println("It's a draw!"); } } ``` To play the game, create an object of Othello: ```java public static void main(String[] args) { Othello game = new Othello(8, 8); game.play(); } ``` You would replace `row` and `col` on the placePiece with the values provided by the user, and `determineWinner` method would calculate the total number of black and white discs on the board, and print the message indicating the winner or a draw.