Java design Pattern _ Builder mode

/** *  */package com.wangbiao.design.builder;import java.util.arraylist;import  java.util.iterator;import java.util.list;/** *  @Title: product.java *  @Package  com.wangbiao.design.builder *  @Description: todo  *  @author  wangbiao     *  @date  2014-9-26  Morning 10:06:53  *  @version  V1.0  */public class product {        list<string>  parts = new ArrayList<String> ();         Public void addpart (String part) {        parts.add (part );     }        public void display () {         Iterator<String> iter =   Parts.iterator ();    &Nbsp;            while (Iter.hasNext ()) {                          system.out.println (Iter.next ());         }    }}/** *  */package com.wangbiao.design.builder;/** * @ title: builder.java *  @Package  com.wangbiao.design.builder *  @Description:  todo  *  @author  wangbiao    *  @date  2014-9-26  Morning 10 :16:28  *  @version  V1.0 */public abstract class Builder {         public abstract void builderparta ();   &NBSP;&NBSP;PUBLIC&NBSP;ABSTRACT&NBSP;VOID&NBSP;BULDERPARTB ();     public abstract  product getresult ();} /** *  */package com.wangbiao.design.builder;/** *  @Title:  concretebuildera.java *  @Package  com.wangbiao.design.builder *  @Description:  todo  *  @author  wangbiao    *  @date  2014-9-26  Morning 10 :18:47  *  @version  V1.0 */public class ConcreteBuilderA extends  Builder {    private product product = new product ();     /*  (Non-javadoc)      *  @see   Com.wangbiao.design.builder.builder#builderparta ()      */    @ Override    public void builderparta ()  {         // TODO Auto-generated method stub         product.addpart ("large screen");     }    /*  (Non-javadoc)      *  @see   COM.WANGBIAO.DESIGN.BUILDER.BUILDER#BULDERPARTB ()      */    @ OVERRIDE&NBSP;&NBSP;&NBSP;&NBSP;PUBLIC&NBSP;VOID&NBSP;BULDERPARTB ()  {         // TODO Auto-generated method stub         product.addpart ("Metal Body");    }    /*  (Non-Javadoc)       *  @see  com.wangbiao.design.builder.builder#getresult ()       */     @Override     public product getresult ()  {        // todo auto-generated method stub         return product;    }}/** *   */package com.wangbiao.design.builder;/** *  @Title: concretebuilderb.java *  @Package  com.wangbiao.design.builder * @ description: todo  *  @author  wangbiao    *  @date   2014-9-26  Morning 10:19:05  *  @version  v1.0 */public class concretebuilderb  extends builder {    private product product = new  product ();    /*  (non-javadoc)      *  @see   Com.wangbiao.design.builder.builder#builderparta ()      */    @ Override    public void builderparta ()  {         // TODO Auto-generated method stub         product.addpart ("small Screen");    }    /*  (Non-Javadoc)       *  @see&NBSP;COM.WANGBIAO.DESIGN.BUILDER.BUILDER#BULDERPARTB ()      */      @Override &NBSP;&NBSP;&NBSP;&NBSP;PUBLIC&NBSP;VOID&NBSP;BULDERPARTB ()  {         // TODO Auto-generated method stub         product.addpart ("Plastic Body");    }    /*  ( Non-javadoc)      *  @see  com.wangbiao.design.builder.builder#getresult ()      */     @Override     public product  getresult ()  {        // TODO Auto-generated  method stub        return product;    }} /** *  */package com.wangbiao.design.builder;/** *  @Title:  Director.java  *  @Package &NBSP;COM.WANGBIAO.Design.builder *  @Description: todo  *  @author  wangbiao     *  @date  2014-9-26  Morning 10:19:19  *  @version  V1.0 */public  Class director {    public void  createproduct (Builder  Builder) {                 Builder.builderparta (); &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;BUILDER.BULDERPARTB ();     }}/** *  */package com.wangbiao.design.builder;/** *  @Title:  client.java *  @Package  com.wangbiao.design.builder *  @Description: todo   *  @author  wangbiao    *  @date  2014-9-26  Morning 10:16:10   *  @version  V1.0 */public class Client {    /**      *  @param   Args     */    public static void main (String[]  args)  {        // todo auto-generated method  stub                         /*         * The benefit of the builder model is that it separates the construction code from the presentation code and hides the construction process. The          * builder pattern is useful for creating complex objects with logic that is independent of the creation process and assembly method  .          *         * /        director director = new director ();         builder buildera = new concretebuildera ();         builder builderb = new concretebuilderb ();                 director.createproduct ( Buildera);         product p1 = buildera.getresult ();         p1.display ();                 director.createproduct (Builderb);         product p2 = builderb.getresult ();         p2.display ();             }}

Java design Pattern _ Builder mode