一个单机的用JAVA编写的坦克大战小游戏！键盘上W，A,S,D分别代表坦克的运动的各个方向，1，2，3分别表示坦克发射的子弹类型！-The use of a stand-alone JAVA game Tankedaizhan prepared! Keyboard W, A, S, D, respectively, on behalf of the movement of tanks in all directions, 1,2,3, respectively, the type of tank