// Game Map

    public class GameMap {

        /* Item's ID */
        private final int snakeID = 0,
        mapID = 1,
        borderID = 2,
        appleID = 3;

        /* Game Map */
        private int[][] GameMap;

        /* Snake Object */
        public Snake object;

        /* Apple Pos */
        private int[] applePosition = new int[2];

        public GameMap() {
        }

        /* Map Dimension: 7x7 */
        public void createMap(){
            int[][] map = {
                    {2, 2, 2, 2, 2, 2, 2},
                        {2, 1, 1, 1, 1, 1, 2},
                        {2, 1, 1, 1, 1, 1, 2},
                        {2, 1, 1, 1, 1, 1, 2},
                        {2, 1, 1, 1, 1, 1, 2},
                        {2, 1, 1, 1, 1, 1, 2},
                        {2, 2, 2, 2, 2, 2, 2}
                                };
            this.GameMap = map;
        }

        public boolean setMap(int[] pos, int[] newPos){
            // Remove a old snake pos.
            this.GameMap[pos[0]][pos[1]] = this.mapID;

            // Set a new snake position.
            if (this.GameMap[newPos[0]][newPos[1]] == this.borderID){ // if occur colision then..
                return true;

            } else if (this.GameMap[newPos[0]][newPos[1]] == this.appleID) { // if eat apple then..
                object.setSize();
                createApple();

                this.GameMap[newPos[0]][newPos[1]] = this.snakeID; // new pos.

            } else {
                this.GameMap[newPos[0]][newPos[1]] = this.snakeID; // new pos.
            }

            return false;
        }

        /* Create Snake on the map */
        public void createSnake(){

            int row = (int) Math.random() * this.GameMap.length,
            column = (int) Math.random() * this.GameMap.length;

            if(this.GameMap[row][column] == 1){
                this.GameMap[row][column] = this.snakeID;
                object = new Snake(row, column);

            } else {
                createSnake();
            }
        }

        /* Create Apple on the map */
        public void createApple(){

            int row = (int) Math.random() * this.GameMap.length;
            int column = (int) Math.random() * this.GameMap.length;

            if(this.GameMap[row][column] != 2 && this.GameMap[row][column] != 0){

                this.GameMap[row][column] = this.appleID;

                this.applePosition[0] = row;
                this.applePosition[1] = column;

            } else {
                createApple();
            }
        }

        public int[] getApplePosition(){
            return this.applePosition;
        }

        public int getMapID(int row, int column){
            return this.GameMap[row][column];
        }
    }

// Snake

public class Snake {

    private boolean Live;
    private int size; // implements after.

    private int[] position = new int[2];

    public GameMap pos;

    public Snake(int row, int column){
        this.Live = true;
        this.size = 1;

        this.position[0] = row;
        this.position[1] = column;
    }

    public int[] getPosition() {
        return this.position;
    }

    public void setPosition(int[] newPos){

        pos = new GameMap();
        boolean check = pos.setMap(this.position, newPos);

        if(check == true){
            this.Live = false;

        } else {
            this.position = newPos;
        }
    }

    public void setSize(){
        this.size += 1;
    }

    public boolean isLive() {
        return this.Live;
    }

}