设计模式一抽象工厂模式
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概述
通过工厂创建的对象,彼此之间是有关联的,是需要相互匹配的,
而简单工厂并没有解决对象之间相互依赖匹配的问题
合理解决方案就是使用抽象工厂设计模式:提供一个创建一系列相关或者相互依赖的接口,
接口内部严格按照相关或相互依赖的对象关系创建,
切勿堆积其它没有用的方法或者无关联关系的方法
组成
AbstractFactory:抽象工厂,提供统一的接口工厂。
ConcreteFactory:具体工厂,用来创建具体的带有关联关系的实例产品
AbstractProduct:统一的产品接口
ConcreteProduct:具体产品
优点:解耦
缺点:不容易扩展
1 public class Client { 2 public static void main(String[] args) { 3 ConcreteFactory1 a = new ConcreteFactory1(); 4 CPUApi cpu = a.createCpu(); 5 MainBoardApi mainBoard = a.createMainBoard(); 6 cpu.calculate(); 7 mainBoard.installCpu(); 8 9 } 10 } 11 12 13 //CPU的模拟方法 14 public interface CPUApi { 15 public void calculate(); 16 } 17 18 //主板模拟方法 19 public interface MainBoardApi { 20 public void installCpu(); 21 } 22 23 //cpu实现 24 public class IntelCpu implements CPUApi { 25 private int pins = 0; 26 27 public IntelCpu(int pins) { 28 // TODO Auto-generated constructor stub 29 this.pins = pins; 30 } 31 32 @Override 33 public void calculate() { 34 // TODO Auto-generated method stub 35 System.out.println("INTEL CPU 针脚数:" + pins); 36 } 37 } 38 39 public class AMDCpu implements CPUApi { 40 private int pins = 0; 41 42 public AMDCpu(int pins) { 43 // TODO Auto-generated constructor stub 44 this.pins = pins; 45 } 46 47 @Override 48 public void calculate() { 49 // TODO Auto-generated method stub 50 System.out.println("AMD CPU针脚数:" + pins); 51 } 52 } 53 54 //主板实现 55 public class GAMainBoard implements MainBoardApi { 56 private int cpuHoles = 0; 57 58 public GAMainBoard(int cpuHoles) { 59 // TODO Auto-generated constructor stub 60 this.cpuHoles = cpuHoles; 61 } 62 63 @Override 64 public void installCpu() { 65 // TODO Auto-generated method stub 66 System.out.println("GA MainBoard 插孔数:" + cpuHoles); 67 } 68 69 } 70 71 public class MSIMainBoard implements MainBoardApi { 72 private int cpuHoles = 0; 73 74 public MSIMainBoard(int cpuHoles) { 75 // TODO Auto-generated constructor stub 76 this.cpuHoles = cpuHoles; 77 } 78 79 @Override 80 public void installCpu() { 81 // TODO Auto-generated method stub 82 System.out.println("MSI MainBord 插孔数:" + cpuHoles); 83 } 84 85 } 86 87 //抽象工厂 88 public interface AbstractFactory { 89 public CPUApi createCpu(); 90 91 public MainBoardApi createMainBoard(); 92 } 93 94 //抽象工厂具体实现 95 public class ConcreteFactory1 implements AbstractFactory { 96 97 //两者之间有联系 98 @Override 99 public CPUApi createCpu() { 100 // TODO Auto-generated method stub 101 return new AMDCpu(1156); 102 } 103 104 @Override 105 public MainBoardApi createMainBoard() { 106 // TODO Auto-generated method stub 107 return new MSIMainBoard(1156); 108 } 109 } 110 111 public class ConcreteFactory2 implements AbstractFactory { 112 113 //两者之间有联系 114 @Override 115 public CPUApi createCpu() { 116 // TODO Auto-generated method stub 117 return new AMDCpu(939); 118 } 119 120 @Override 121 public MainBoardApi createMainBoard() { 122 // TODO Auto-generated method stub 123 return new MSIMainBoard(939); 124 } 125 126 }