檔案、檔案夾删除
boolean java.io.file.delete()
若是檔案，删除。若是檔案夾，隻有它為非空時才删除。
deletes the file or directory denoted by this abstract pathname. if this pathname denotes a directory, then the directory must be empty in order to be deleted.
檔案、檔案夾删除
boolean java.io.file.delete()
若是檔案，删除。若是檔案夾，隻有它為非空時才删除。
deletes the file or directory denoted by this abstract pathname. if this pathname denotes a directory, then the directory must be empty in order to be deleted.