VIP31/spring-demo/src/main/java/com/sf/javase/computer/MiComputer.java

package com.sf.javase.computer;

/**
 * 小米笔记本
 */
public class MiComputer extends Computer{
    @Override
    public void setOperationSystem() {
        System.out.println("mi Windows操作系统");
    }
}