java设计模式之工厂模式_工场类-优快云博客

本文通过实例解析了Java设计模式中的工厂模式概念，包括父类Mobile接口定义、具体实现类如IPhoneMobile、RedRiceMobile、SamsungMobile以及工厂类MobileFactory的创建与使用，展示了如何通过工厂类实现对不同子类对象的实例化。

java设计模式之工厂模式

工厂模式: 简单的说就是建立一个工厂类，实现对继承同一个父类的子类对像的实例化。

Mobile.java 父类代码如下：

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package Factory;

/**
 *
 * @author dev
 */
public interface Mobile {
    public void printName();
}

IPhoneMobile.java 代码如下：

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package Factory;

/**
 *
 * @author dev
 */
public class IPhoneMobile implements Mobile {

    @Override
    public void printName() {
        System.out.println("我是一个iPhone手机!");
    }    
}

RedRiceMobile.java 代码如下：

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package Factory;

/**
 *
 * @author dev
 */
public class RedRiceMobile implements Mobile {

    @Override
    public void printName() {
        System.out.println("我是一个红米手机!");
    }
    
}

SamsungMobile.java 代码如下：

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package Factory;

/**
 *
 * @author dev
 */
public class SamsungMobile implements Mobile {

    @Override
    public void printName() {
        System.out.println("我是一个三星手机!");
    }
    
}

手机工场类 MobileFactory.java 代码如下：

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package Factory;

/**
 *
 * @author dev
 */
public class MobileFactory {
    public Mobile getMobile(String typeString) {
        Mobile mobile = null;
        if (typeString.equals("IPhone")) {
            mobile = new IPhoneMobile();
        } else if (typeString.equals("RedRice")) {
            mobile = new RedRiceMobile();
        } else if (typeString.equals("Samsung")) {
            mobile = new SamsungMobile();
        }
        
        return mobile;
    }
}

main函数如下：

public static void main(String[] args) {
        // TODO code application logic here
        MobileFactory mf = new MobileFactory();
        String[] typeStrings = {"IPhone", "RedRice", "Samsung"};
        for (String type: typeStrings) {
            Mobile mobile = mf.getMobile(type);
            mobile.printName();
        }
    }