设计模式之工厂模式

设计模式之工厂模式

菜鸟教程之工厂模式
如下：SteveCode之工厂模式

类图：

上代码： ChinaPizza

public class ChinaPizza extends Pizza{
    public ChinaPizza() {
        name = "中国披萨";
        size = 12;
    }
    
    @Override
    void box() {
        System.out.println("非常之精致的盒子");
    }
}

NyChina

public class NyChina extends Pizza {
    
    public NyChina() {
        name = "牛约披萨";
        size = 8;
    }
    
    @Override
    void cut() {
        System.out.println("切6片");
    }
}

Pizza

public class Pizza {
    public String name;
    
    public Integer size;
    
    
    void box() {
        System.out.println("普通包装盒子");
    }
    
    void cut() {
        System.out.println("默认切8片");
    }
    
    public String getName() {
        return this.name;
    }
}

PizzaAbstract

public abstract class PizzaAbstract {
    public Pizza createPizza(String type) {
        Pizza pizza = typePizza(type);
        pizza.box();
        pizza.cut();
        return pizza;
    }
    
    
    abstract Pizza typePizza(String type);
    
}

TypePizzaFactory

public class TypePizzaFactory extends PizzaAbstract{
    @Override
    Pizza typePizza(String type) {
        if ("china".equals(type)) {
            return new ChinaPizza();
        }
        if ("ny".equals(type)) {
            return new  NyChina();
        }
        //不友好测试用
        return null;
    }
}

测试类：Test

public class Test {
    public static void main(String[] args) {
       TypePizzaFactory typePizza = new TypePizzaFactory();
        Pizza ny = typePizza.createPizza("ny");
        System.out.println("披萨名称="+ny.getName());
        Pizza china = typePizza.createPizza("china");
        System.out.println("披萨名称="+china.getName());
    }
}

效果图

工厂模式还需要优化
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