简单工厂模式（Simple Factory）

建立产品

public  class Pizz {

    public Pizz() {
    System.out.println("##########Pizz ############");
    }

}

子类

package com.ghg.data_structure.mode.factory;

public class CheesePizz extends Pizz {

    public CheesePizz() {
        System.out.println("CheesePizz 初始化");
    }

}

package com.ghg.data_structure.mode.factory;

public class VeggiePizz extends Pizz {

    public VeggiePizz() {
        System.out.println("VeggiePizz 初始化");
    }

}

工厂

package com.ghg.data_structure.mode.factory;

/**
 * 简单工厂
 * 
 * @author Administrator
 *
 */
public class SimplePizzFactory {

    public static Pizz createPrizz(String type) {
        Pizz prizz = null;
        if (type.equals("cheese")) {
            prizz = new CheesePizz();
        } else if (type.equals("veggie")) {
            prizz = new VeggiePizz();
        }

        return prizz;
    }
}

测试

public class Test1 {

    public static void main(String[] args) {
        Pizz cheese = SimplePizzFactory.createPrizz("cheese");
        Pizz veggie = SimplePizzFactory.createPrizz("veggie");
}
}

结果

##########Pizz ############
CheesePizz 初始化
##########Pizz ############
VeggiePizz 初始化

package com.ghg.data_structure.mode.factory;

public class PizzStore {

    private SimplePizzFactory simplePizzFactory;

    /**
     * 装饰模式 注入构造方法
     * @param simplePizzFactory
     */
    public PizzStore(SimplePizzFactory simplePizzFactory) {
        this.simplePizzFactory = simplePizzFactory;
    }
    
    /**
     * 生产PIZZ
     * @param type
     * @return
     */
    @SuppressWarnings("static-access")
    public  Pizz orderPizz(String type){
        Pizz pizz=null;
        pizz=simplePizzFactory.createPrizz(type);
        
        
        return pizz;
    }
    
}

测试

package com.ghg.data_structure.mode.factory;

public class Test1 {

    public static void main(String[] args) {
        Pizz cheese = SimplePizzFactory.createPrizz("cheese");
        Pizz veggie = SimplePizzFactory.createPrizz("veggie");

        PizzStore pizzStore = new PizzStore(new SimplePizzFactory());
        
        Pizz cheese2=pizzStore.orderPizz("cheese");
        Pizz veggie2=pizzStore.orderPizz("veggie");
    }

}

结果:

##########Pizz ############
CheesePizz 初始化
##########Pizz ############
VeggiePizz 初始化
##########Pizz ############
CheesePizz 初始化
##########Pizz ############
VeggiePizz 初始化