俄罗斯方块小游戏的Java源代码，俄罗斯方块的Java 实现，里面包括控制面板类、方格类、游戏控制主类等，方格类是组成块的基本元素，用自己的颜色来表示块的外观，俄罗斯方块游戏控制面板类，继承自JPanel.上边安放预显窗口、等级、得分、控制按钮，主要用来控制游戏进程。

　　游戏主类，继承自JFrame类，负责游戏的全局控制，内含：

　　1, 一个GameCanvas画布类的实例引用，

　　2, 一个保存当前活动块(ErsBlock)实例的引用，

　　3, 一个保存当前控制面板（ControlPanel）实例的引用

　　俄罗斯方块控制面板类的构造函数：

　　@param game ErsBlocksGame, ErsBoxesGame类的一个实例引用，方便直接控制ErsBoxesGame类的行为。让用户修改游戏难度等级。

　　@param level 修改后的游戏难度等级，当用户消灭一行方块后，重新计算TipPanel里的boxes[][]里的小框的大校-Tetris game for Java source code , Tetris Java implementation , which includes control panel type, square type, the main game control , etc., are the basic elements checkered class blocks , with their own color to represent the appearance of the block Tetris game control panel class inherits from JPanel. remarkable window on top of the pre- placement , grade, score , control buttons , is mainly used to control the game process.

The main game class inherits from JFrame class , is responsible for the overall control of the game , containing :

1 , a reference to a class instance GameCanvas canvas ,

2 , a reference to save the currently active block (ErsBlock) instance ,

3 , a save the current control panel (ControlPanel) cited instances　

Tetris control panel class constructor :

@ param game ErsBlocksGame, an instance of the class reference ErsBoxesGame facilitate direct control ErsBoxesGame kind of behavior . Allows users to modify the game difficulty level .

@ param level the mod