一、工厂模式

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工厂模式：简单来说就像一个创界对象的工厂，需要什么对象，传参数给他，它返回需要的对象的实例。工厂模式属于创建型模式。

下面通过代码来展示普通的工厂模式：

1.创建一个抽象的Human类public abstract class Human {public abstract void eat();public abstract void sleep();public abstract void study();}2.Man继承抽象Human类public class Man extends Human{public void eat() {System.out.println("the man eat..");}public void sleep() {System.out.println("the man sleep..");}public void study() {System.out.println("the man study..");}}3.Female 继承抽象Human类public class Female extends Human{public void eat() {System.out.println("the Female eat...");}public void sleep() {System.out.println("the Female sleep..");}public void study() {System.out.println("the Female study..");}}下面就是我们的 HumanFactory工厂类public class HumanFactory { public static Human creatHuman(String obj){Human human=null;if("man".equals(obj)){human=new Man();    }else if("female".equals(obj)){    human=new Female();    }else{    return null;    }return human;}}

抽象工厂模式：

抽象工厂模式又称之为工厂的工厂。也就是生产某类具的对象的工厂的工厂。比如有生产shape对象的工厂:shapeFactory,生产color对象的工厂：colorFactory;现在有一个工厂的工厂叫productFactory;传入要生对象的工厂给它，它返回要生成的对象。

package FactoryModel;interface shape{public void drawShape();}interface color{public void fillColor();}class squar implements shape{@Overridepublic void drawShape() {System.out.print("draw squar");}}class circle implements shape{@Overridepublic void drawShape() {System.out.print("draw circle");}}class red implements color{@Overridepublic void fillColor() {System.out.print("fill red");}}class green implements color{@Overridepublic void fillColor() {System.out.print("fill green");}}interface AbstractFactory { //抽象工厂public shape getShape(String name);public color getColor(String name);}class shapeFactory implements AbstractFactory{//形状工厂public shape getShape(String name){if(name=="circle")return new circle();if(name=="squar")return new squar();return null;}@Overridepublic color getColor(String name) {// TODO Auto-generated method stubreturn null;}}class colorFactory implements AbstractFactory{//颜色工厂，你要什么颜色？红色？绿色？public color getColor(String name){if(name=="red")return new red();if(name=="green")return new green();return null;}@Overridepublic shape getShape(String name) {// TODO Auto-generated method stubreturn null;}}class productFactory{//工厂的工厂public AbstractFactory getFactory(String name){//你要创建什么？形状还是颜色？if(name=="shape")return new shapeFactory();if(name=="color")return new colorFactory();//...return null;}}

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