Java-马士兵设计模式学习笔记-建造者模式

一、概述

二、代码

1.Animal.java

 public interface Animal {
     public void bark();
 }

2.Dog.java

 public class Dog implements Animal {

     @Override
     public void bark() {
         System.out.println("Dog wang wang !");
     }

 }

3.Cat.java

 public class Cat implements Animal {

     @Override
     public void bark() {
         System.out.println("cat miao miao");
     }

 }

4.AnimalBuilder.java

 package Builder;

 import java.util.ArrayList;
 import java.util.List;

 public class AnimalBuilder {

     private static List<Animal> animals = new ArrayList<Animal>();

     public static List<Animal> getDogs(int count){
         for(int i = 0; i<count ;i++){
             animals.add(new Dog());
         }
         return animals;
     }

     public static List<Animal> getCat(int count){
         for(int i = 0; i<count ;i++){
             animals.add(new Cat());
         }
         return animals;
     }
 }

5.AnimalFactoryTest.java

 package Builder;

 import java.util.List;

 import org.junit.Test;

 public class AnimalFactoryTest {

     @Test
     public void test() {
         List<Animal> animals = AnimalBuilder.getDogs(3);
         for(int i = 0; i<animals.size() ;i++){
             animals.get(i).bark();
         }
     }

 }

三、运行结果