vc 编写的源代码！建议你们可以下载小看一下！-vc prepared by the source code! Suggest that you can download belittle!

file种方法使用实例。在系统当前目录下生成文件，并获得文件的属性信息，最后当JVM结束时删除所创建的文件。-The file method uses the instance. In the current directory file system, and obtain the attribute information file, delete the last when creating JVM at the end of the file.