Write a Java program to design Snake game. With every 5 steps, the snake will grow by 1.Consider the following in the code:

1] Code a service that runs a game of snake, 2 methods: moveSnake(direction) and isGameOver()

2] if the Snake goes out of the boundary it should wrap in from the opposite side of the screen.

3] Optimise the code using deque

4] How would you take care of concurrent button presses, i.e if someone presses up and right at the same time

5] Use a design pattern

6] Write unit tests to check the solution