建造者模式（生成器模式）

最新推荐文章于 2025-08-08 20:30:00 发布
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1.将复杂的对象的构建与其表示分离，使同样的构建过程可以有不同的表示
代码如下
//父类抽象，采用模板方法模式，定义一系列算法，抽象，定义一模板，由sequence 动态决定算法是否执行
	//子类将继承该类并实现3个算法
	abstract class design_mode_Builder_Pattern_Model
	{
		private ArrayList<String> sequence = new ArrayList<String>();

		protected abstract void design_mode_Builder_Pattern_Model_MethodA();

		protected abstract void design_mode_Builder_Pattern_Model_MethodB();

		protected abstract void design_mode_Builder_Pattern_Model_MethodC();
         


		final public void setSequence(ArrayList<String> sequence)
			{
               this.sequence = sequence;
			}
        

		//定义的模板方法
		final public void design_mode_Builder_Pattern_Model_Method_transfer ()
		{
			for(int i=0;i<this.sequence.size();i++)
			{
				String actionName = this.sequence.get(i);
                    
					if (actionName == "MethodA" )
					{
						this.design_mode_Builder_Pattern_Model_MethodA();
					}
					else if (actionName == "MethodB" )
					{
						this.design_mode_Builder_Pattern_Model_MethodB();
					}

				   else if (actionName == "MethodC" )
					{
						this.design_mode_Builder_Pattern_Model_MethodC();
					}
					else
				    {
						System.out.println("wrong method");
					}
			}
		}
		
	}
    

	// 子类1
	class design_mode_Builder_Pattern_Model_class_1 extends design_mode_Builder_Pattern_Model
	{
		protected  void design_mode_Builder_Pattern_Model_MethodA()
		{
			System.out.println("design_mode_Builder_Pattern_Model_class_1  design_mode_Builder_Pattern_Model_MethodA");
		}
		protected  void design_mode_Builder_Pattern_Model_MethodB()
		{
             System.out.println("design_mode_Builder_Pattern_Model_class_1 design_mode_Builder_Pattern_Model_MethodB");
		}

		protected  void design_mode_Builder_Pattern_Model_MethodC()
		{
              System.out.println("design_mode_Builder_Pattern_Model_class_1 design_mode_Builder_Pattern_Model_MethodC");
		}
	}
     

	 // 子类2
	class design_mode_Builder_Pattern_Model_class_2 extends design_mode_Builder_Pattern_Model
	{
		
		protected  void design_mode_Builder_Pattern_Model_MethodA()
		{
			System.out.println("design_mode_Builder_Pattern_Model_class_2 design_mode_Builder_Pattern_Model_MethodA");
		}
		protected  void design_mode_Builder_Pattern_Model_MethodB()
		{
             System.out.println("design_mode_Builder_Pattern_Model_class_2 design_mode_Builder_Pattern_Model_MethodB");
		}

		protected  void design_mode_Builder_Pattern_Model_MethodC()
		{
              System.out.println("design_mode_Builder_Pattern_Model_class_2 design_mode_Builder_Pattern_Model_MethodC");
		}
	}
     

	 // 建立抽象建造者类，定义抽象方法执行顺序并返回子类
	abstract class design_mode_Builder_Pattern_Model_Builder
	{
		public abstract void setSequence(ArrayList<String> sequence);
		public abstract design_mode_Builder_Pattern_Model getdesign_mode_Builder_Pattern_Model();
	}
      
       // 建造者1
	class design_mode_Builder_Pattern_Model_class_1_Builder extends design_mode_Builder_Pattern_Model_Builder
	{
		private design_mode_Builder_Pattern_Model_class_1 getdesign_mode_Builder_Pattern_Model_1 =  new design_mode_Builder_Pattern_Model_class_1();
		//getdesign_mode_Builder_Pattern_Model_1 =

		public  design_mode_Builder_Pattern_Model getdesign_mode_Builder_Pattern_Model()
		{
              return this.getdesign_mode_Builder_Pattern_Model_1;
		}

		public void setSequence(ArrayList<String> sequence)
		{
			this.getdesign_mode_Builder_Pattern_Model_1.setSequence(sequence);
		}
	}
    

	    // 建造者2
	class design_mode_Builder_Pattern_Model_class_2_Builder extends design_mode_Builder_Pattern_Model_Builder
	{
		private design_mode_Builder_Pattern_Model_class_2 getdesign_mode_Builder_Pattern_Model_2 =  new design_mode_Builder_Pattern_Model_class_2();
		public  design_mode_Builder_Pattern_Model getdesign_mode_Builder_Pattern_Model()
		{
              return this.getdesign_mode_Builder_Pattern_Model_2;
		}

		public void setSequence(ArrayList<String> sequence)
		{
			this.getdesign_mode_Builder_Pattern_Model_2.setSequence(sequence);
		}
	}
     

	 // 导演类，定义各模型的内部实现等
	class design_mode_Builder_Pattern_Model_director
	{
		private ArrayList<String> sequence = new ArrayList();
		private  design_mode_Builder_Pattern_Model_class_1_Builder model1 = new design_mode_Builder_Pattern_Model_class_1_Builder();
		private  design_mode_Builder_Pattern_Model_class_2_Builder model2 = new design_mode_Builder_Pattern_Model_class_2_Builder();

		// 构造模型1

		public design_mode_Builder_Pattern_Model_class_1 getModel1()
		{
			this.sequence.clear();
			this.sequence.add("MethodA");
			this.sequence.add("MethodB");
			this.sequence.add("MethodC");

			this.model1.setSequence(sequence);

			return (design_mode_Builder_Pattern_Model_class_1)model1.getdesign_mode_Builder_Pattern_Model();
		}

			// 构造模型2

		public design_mode_Builder_Pattern_Model_class_1 getModel1_1()
		{
			this.sequence.clear();
			this.sequence.add("MethodA");			
			this.sequence.add("MethodC");

			this.model1.setSequence(sequence);

			return (design_mode_Builder_Pattern_Model_class_1)model1.getdesign_mode_Builder_Pattern_Model();
		}
       // 构造模型3
		public design_mode_Builder_Pattern_Model_class_2 getModel2_1()
		{
			this.sequence.clear();
			this.sequence.add("MethodA");			
			this.sequence.add("MethodC");
			this.sequence.add("MethodA");			

			this.model2.setSequence(sequence);

			return (design_mode_Builder_Pattern_Model_class_2)model2.getdesign_mode_Builder_Pattern_Model();
		}
        // 构造模型4
		public design_mode_Builder_Pattern_Model_class_2 getModel2_2()
		{
			this.sequence.clear();
			this.sequence.add("MethodA");			
			this.sequence.add("MethodC");			

			this.model2.setSequence(sequence);

			return (design_mode_Builder_Pattern_Model_class_2)model2.getdesign_mode_Builder_Pattern_Model();
		}
	}
      // 测试类
	class design_mode_Builder_Pattern_Model_Client
	{
		public void design_mode_Builder_Pattern_Model_Client_Test()
		{
			design_mode_Builder_Pattern_Model_director director = new design_mode_Builder_Pattern_Model_director();
            

			// 第1个构造
             for (int i=0;i<5 ;i++ )
             {
				 director.getModel1().design_mode_Builder_Pattern_Model_Method_transfer();
             }

			 // 第2个构造
             for (int i=0;i<5 ;i++ )
             {
				 director.getModel1_1().design_mode_Builder_Pattern_Model_Method_transfer();
             }

			 // 第3个构造
             for (int i=0;i<5 ;i++ )
             {
				 director.getModel2_1().design_mode_Builder_Pattern_Model_Method_transfer();
             }

			 	 // 第4个构造
             for (int i=0;i<5 ;i++ )
             {
				 director.getModel2_2().design_mode_Builder_Pattern_Model_Method_transfer();
             }

		}
	}