.编写程序，选择适当的类，以字节流方式打开当前目录下的某个文件，向文件中分别写入自己的姓名、学号、年龄等信息(自定义所需要的数据类型)，然后从该文件中读取这些信息，打印输出。-. Write a program, select the appropriate category in order to open the byte stream to a file under the current directory to the file, respectively, to write their name, student number, age and other information (from the definition of the required data type), and then read from the file information, print the output.