以下是一个简单的Java动态规划贪吃蛇游戏的实现：

```java import java.util.LinkedList; import java.util.Queue;

public class Snakes { private int[][] board; private int[][] snakeBoard; private int directionX[] = {1, -1, 0, 0}; private int directionY[] = {0, 1, 0, -1};

public Snakes(int[][] board) {
    this.board = board;
    this.snakeBoard = new int[board.length][board[0].length];
}

public void draw() {
    for (int i = 0; i < snakeBoard.length; i++) {
        for (int j = 0; j < snakeBoard[i].length; j++) {
            System.out.print("#");
        }
        System.out.println();
    }
}

public void move(int dir) {
    if (dir == 0) {
        int newX = snakeBoard[0][0];
        int newY = snakeBoard[0][ snakeBoard.length - 1];
        snakeBoard[0][0] = newX;
        snakeBoard[0][snakeBoard.length - 1] = newY;
    } else if (dir == 1) {
        int newX = snakeBoard[snakeBoard.length - 1][0];
        int newY = snakeBoard[0][0];
        snakeBoard[snakeBoard.length - 1][0] = newX;
        snakeBoard[0][snakeBoard.length - 1] = newY;
    } else if (dir == 2) {
        int newX = snakeBoard[0][0];
        int newY = snakeBoard[snakeBoard.length - 1][snakeBoard.length - 1];
        snakeBoard[0][0] = newX;
        snakeBoard[snakeBoard.length - 1][snakeBoard.length - 1] = newY;
    } else if (dir == 3) {
        int newX = snakeBoard[0][0];
        int newY = snakeBoard[0][snakeBoard.length - 1];
        snakeBoard[0][0] = newX;
        snakeBoard[0][snakeBoard.length - 1] = newY;
    }
}

public boolean is有毒蛇() {
    for (int i = 0; i < snakeBoard.length; i++) {
        for (int j = 0; j < snakeBoard[i].length; j++) {
            if (snakeBoard[i][j] == 1) {
                return true;
            }
        }
    }
    return false;
}

public boolean is有毒蛇后退() {
    for (int i = 0; i < snakeBoard.length; i++) {
        for (int j = 0; j < snakeBoard[i].length; j++) {
            if (snakeBoard[i][j] == 0) {
                return true;
            }
        }
    }
    return false;
}

public boolean is有毒蛇攻击() {
    for (int i = 0; i < snakeBoard.length; i++) {
        for (int j = 0; j < snakeBoard[i].length; j++) {
            if (snakeBoard[i][j] == 2) {
                return true;
            }
        }
    }
    return false;
}

public void kill(int dir) {
    if (dir == 0) {
        for (int i = 0; i < snakeBoard.length; i++) {
            for (int j = 0; j < snakeBoard[i].length; j++) {
                if (snakeBoard[i][j] == 1) {
                    snakeBoard[i][j] = 0;
                }
            }
        }
    } else if (dir == 1) {
        for (int i = 0; i < snakeBoard.length; i++) {
            for (int j = 0; j < snakeBoard[i].length; j++) {
                if (snakeBoard[i][j] == 0) {
                    snakeBoard[i][j] = 1;
                }
            }
        }
    } else if (dir == 2) {
        for (int i = 0; i < snakeBoard.length; i++) {
            for (int j = 0; j < snakeBoard[i].length; j++) {
                if (snakeBoard[i][j] == 0) {
                    snakeBoard[i][j] = 2;
                }
            }
        }
    } else if (dir == 3) {
        for (int i = 0; i < snakeBoard.length; i++) {
            for (int j = 0; j < snakeBoard[i].length; j++) {
                if (snakeBoard[i][j] == 0) {
                    snakeBoard[i][j] = 3;
                }
            }
        }
    }
}

public void eat() {
    for (int i = 0; i < snakeBoard.length; i++) {
        for (int j = 0; j < snakeBoard[i].length; j++) {
            if (snakeBoard[i][j] == 1) {
                snakeBoard[i][j] = 0;
                directionsX[i][j] = -1;
            }
        }
    }
}

public void jump() {
    for (int i = 0; i < snakeBoard.length; i++) {
        for (int j = 0; j < snakeBoard[i].length; j++) {
            if (snakeBoard[i][j] == 3) {
                snakeBoard[i][j] = 0;
                directionsY[i][j] = 0;
            }
        }
    }
}

public boolean is有毒蛇二倍长度蛇() {
    for (int i = 0; i < snakeBoard.length; i++) {
        for (int j = 0; j < snakeBoard[i].length; j++) {
            if (snakeBoard[i][j] == 1) {
                return true;
            }
        }
    }
    return false;
}

public void navigate() {
    int dir = directionX[0] + directionY[0];
    int dir2 = directionX[1] + directionY[1];
    if (dir == 0) {
        move(dir2);
    } else if (dir == 1) {
        move(dir);
    } else if (dir == 2) {
        move(dir2);
    } else if (dir == 3) {
        move(dir2);
    }
}

} ```

这个代码实现了一个简单的贪吃蛇游戏。玩家需要控制一个蛇在地图上移动，并吃掉周围的毒蛇。同时，玩家还需要避免被毒蛇吃掉。