ConcreteCreator 重载factory method以创建某个 ConcreteProduct 的具体实例。 也就是说Creator依赖于ConcreteCreator创建Product型的ConcreteProduct对象。 Factory method使应用程序代码只需处理Product接口,而与具体的类(ConcreteProduct)无关,增强了代码可重用性,因为它独立于用户定义的具体的类。 小结 工厂模式的适用范围 ...
以下是工厂方法模式的Java代码实现。 抽象工厂 packagecom.example.javaDesignPattern.factoryMethod;/** * 抽象工厂 * * @author bug菌 * @version 1.0 * @date 2023/9/18 16:45 */publicinterfaceCreator{ProductcreateProduct();} 具体工厂 packagecom.example.javaDesignPattern.factoryMethod;/** * 具体工厂...
ExampleThe Factory Method defines an interface for creating objects, but lets subclasses decide which classes to instantiate. Injection molding presses demonstrate this pattern. Manufacturers of plastic toys process plastic molding powder, and inject the plastic into molds of the desired shapes. The ...
Super class in factory design pattern can be an interface,or a normal java class. For our factory design pattern example, we have abstract super class withoverriddenmethod for testing purpose. Let’s say we have two sub-classes PC and Server with below implementation. package com.journaldev.des...
抽象产品Fruit.java package com.DesignPattern.Creational.FactoryMethod; public interface Fruit { //生长 public void grow(); //收获 public void harvest(); //栽种 public void plant(); } 详细工厂FruitAppleGardener.java package com.DesignPattern.Creational.FactoryMethod; ...
A factory method pattern is a creational pattern. It is used to instantiate an object from one among a set of classes based on a logic. Assume that you have a set of classes which extends a common super class or interface. Now you will create a concrete
DesignPattern_Java:Factory Method Pattern 工厂方法模式 Factory Method :(虚拟构造函数模式 Virtual Constructor,多态性工厂模式 Ploymorphic Facoty) Define an interface for creating an object,but let subclasses decide which class to instantiate.Factory Method lets a class defer instantiation to subclasses....
Note that this pattern is also known as Factory Method Design Pattern. Factory Design Pattern Super Class Super class in factory design pattern can be an interface, abstract class or a normal java class. For our factory design pattern example, we have abstract super class with overridden ...
// Super class in factory pattern can be an interface, abstract class or a // normal java class. For our example, we have super class as abstract class // with overridden toString() method for testing purpose. publicabstractclassCrunchfiyCompany{ ...
Calculate Electricity Bill : A Real World Example of Factory Method Step 1:Create a Plan abstract class. importjava.io.*; abstractclassPlan{ protecteddoublerate; abstractvoidgetRate(); publicvoidcalculateBill(intunits){ System.out.println(units*rate); ...