Introduction - If you have any usage issues, please Google them yourself
The main game class, inherited from the JFrame class, is responsible for overall control of the game. Includes: 1, a type of canvas GameCanvas examples cited, 2, a block to preserve the current activities (ErsBlock) cited examples, 3, a preservation of the current control panel (ControlPanel) cited examples of ErsBox.java: grid type is the basic elements of the composition of the block, with its own color to indicate the appearance of block.