public static void main(String[] args) throws IOException {
        String path = "D:\\io1\\io2\\File.txt";
        File file1 = new File(path);
        boolean exist = file1.exists();
        /*
        public static void mkdirs(String path) {
        File dir = new File(path);
        if(dir.getParent() == null) {
            dir.mkdir();//已经到达根目录
            return;
        }
        File dirParent = dir.getParentFile();//获取父类文件夹
        if(dirParent.exists()) {
            dir.mkdir();
        } else {
            mkdirs(dirParent.getPath());
        }
        dir.mkdir();
    }
         */
        File2.mkdirs(path);//创造文件目录
        File file2 = file1.getParentFile();//获取父类文件夹
        String fileName = "hello.txt";
        File file3 = new File(file2, fileName);
        file3.createNewFile();
        if(!exist) {
            if(file1.delete()) {
                System.out.println("删除成功！");
            }else {
                System.out.println("删除失败！");

            }
        }

    }