23種設計模式--建造者模式

建造者模式

代碼示例

public abstract class Builder{
	abstract void buildA();//地基
	abstract void buildB();//鋼筋工程
	abstract void buildC();//鋪電綫
	abstract void buildD();//粉刷
	//完工：得到產品
	abstract Product getProduct();
}

//產品
@Data
public class Product{
	private String BuildA;
	private String BuildB;
	private String BuildC;
	private String BuildD;
}

public class Worker extends Builder{
	private Product product;
	public Worker(){
		product = new Product();
	}
	@Override
	void buildA(){
		product.setBuildA("地基");
		System.out.println("")
	}
	@Override
	void buildB(){
		product.setBuildB("鋼筋工程");
		System.out.println("鋼筋工程")
	}
	@Override
	void buildC(){
		product.setBuildC("鋪電綫");
		System.out.println("鋪電綫")
	}
	@Override
	void buildD(){
		product.setBuildD("粉刷");
		System.out.println("粉刷")
	}
	@Override
	Product getProduct(){
		return product;
	}
}

//指揮：核心。負責指揮構建一個工程，工程如何構建由他決定
public class Director {

	//指揮工人按照順序建房子
	public Product build(Builder builder){
		builder.buildA();
		builder.buildB();
		builder.buildC();
		builder.buildD();

		return builder.getProduct();
	}
}

public class Test {
	//指揮
	Director director = new Director();
	//指揮 具體的工人完成產品
	Product build = director.build(new Worker());
	System.out.println(build.toString());
}