Java的建造模式(Build)

建造模式：

1 产品类：

package  com.javapatterns.builder;

public   class  Product
... {
    public Product()
    ...{
       // System.out.println("product is initing.");
    }
}

2 抽象建造方法：

package  com.javapatterns.builder;

abstract   public   class  Builder
... {
    public abstract void buildPart1();

    public abstract void buildPart2();

    public abstract Product retrieveResult();
}

 3 具体的建造类：产品的零件制造

package  com.javapatterns.builder;

public   class  ConcreteBuilder  extends  Builder
... {
    /** *//**
     * @label Creates
     */
    private Product product = new Product() ;

    public void buildPart1()
    ...{
        System.out.println("build part one.");
    }

    public void buildPart2()
    ...{
        System.out.println("build part two.");
    }

    public Product retrieveResult()
    ...{
        return product;
    }
}

4 产品的建造过程：

package  com.javapatterns.builder;

public   class  Director
... {
    /** *//**
     * @link aggregation
     * @directed
     * @clientRole builder*/
    private Builder builder;

    public Director(Builder builder)
    ...{
        this.builder = builder;
    }

    public void construct()
    ...{
        builder = new ConcreteBuilder();

        builder.buildPart1();

        builder.buildPart2();

        builder.retrieveResult();

        //continue with other code
    }
}

5 测试：

package  com.javapatterns.builder;

public   class  Client
... {
    /** *//**
     * @link aggregation
     * @directed 
     */
    private static Director director;

    private static Builder builder = new ConcreteBuilder();
        
    public void requestBuild()
    ...{
       // director = new Director(builder);
    }
    
     public static void main(String[] args) 
    ...{
        director = new Director(builder);
        director.construct();
    }

}

 

init:
deps-jar:
compile-single:
run-single:
build part one.
build part two.
生成成功（总时间：0 秒）