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

package com.sf.javase.computer;

/**
 * 笔记本 加工工厂
 */
public class ComputerFactory {

    // 生产笔记本  通过不同的品牌生产不同操作系统的笔记本
    public static Computer makeComputer(String brand) {
        Computer computer = null;
        switch (brand) {
            case "mac":
                computer = new MacComputer();
                break;
            case "mi":
                computer = new MiComputer();
                break;
            default:
        }
        return computer;
    }

    public static void main(String[] args) {
        // 根据工厂来获取 具体的Computer
        Computer computer = ComputerFactory.makeComputer("mi");
        // 调用Computer设置操作系统方法
        computer.setOperationSystem();

        Computer macComputer = ComputerFactory.makeComputer("mac");
        macComputer.setOperationSystem();
    }
}