利用java实现的spooling系统模拟，包括输入输出井、缓冲区、出入输出进程的模拟。初学者可用来参考加深对操作系统相关概念的理解。-Spooling system using java implementation of simulation, including input and output wells, buffer, out of the analog output of the process. Beginners can be used to refer to deepen t