有关命令行环境的一些操作: (1) clc 擦去一页命令窗口,光标回屏幕左上角 (2) clear 从工作空间清除所有变量 (3) clf 清除图形窗口内容-the command-line environment for the operation of : (a) liquidchromatographic order to remove a window screen cursor to the upper left corner (2) clear from the work s

生成图书分类号的java代码，基于窗体的。里面有详细的注释说明，经测试程序运行正常。-Books CLC java code is generated based on the form. There are detailed notes, the test program is operating normally.