public abstract class Factory{    public abstract Sample creator();    public abstract Sample2 creator(String name);}public class SimpleFactory extends Factory{    public Sample creator(){        .........        return new SampleA    }    public Sample2 creator(String name){        .........        return new Sample2A    }} public class BombFactory extends Factory{    public Sample creator(){        ......        return new SampleB    }    public Sample2 creator(String name){        ......        return new Sample2B    }}建造者模式Builder模式確保，當我們創建一個復雜的對象時，它使用一步一步的創建過程，最后一步返回類的對象。
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Collections;namespace Building{    // Builder pattern -- Structural example  // "Director"class Director{  // Methods  public void Construct( Builder builder )  {    builder.BuildPartA();    builder.BuildPartB();  }}// "Builder"abstract class Builder{  // Methods  abstract public void BuildPartA();  abstract public void BuildPartB();  abstract public PRoduct GetResult();}// "ConcreteBuilder1"class ConcreteBuilder1 : Builder{  // Fields  private Product product;  // Methods  override public void BuildPartA()  {    product = new Product();    product.Add( "PartA" );  }  override public void BuildPartB()  {    product.Add( "PartB" );  }  override public Product GetResult()  {    return product;  }}// "ConcreteBuilder2"class ConcreteBuilder2 : Builder{  // Fields  private Product product;  // Methods  override public void BuildPartA()  {    product = new Product();    product.Add( "PartX" );  }  override public void BuildPartB()  {    product.Add( "PartY" );  }  override public Product GetResult()  {    return product;  }}// "Product"class Product{  // Fields  ArrayList parts = new ArrayList();   // Methods  public void Add( string part )  {    parts.Add( part );  }  public void Show()  {    Console.WriteLine( " Product Parts -------" );    foreach( string part in parts )      Console.WriteLine( part );  }}/**//// <summary>/// Client test/// </summary>public class Client{  public static void Main( string[] args )  {    // Create director and builders    Director director = new Director( );    Builder b1 = new ConcreteBuilder1();    Builder b2 = new ConcreteBuilder2();    // Construct two products    director.Construct( b1 );    Product p1 = b1.GetResult();    p1.Show();    director.Construct( b2 );    Product p2 = b2.GetResult();    p2.Show();    Console.Read();  }}}
原型模式
原型模式確保對象的克隆屬性?？寺〉膶ο罂赡芘c原始對象不同。例如，您可以從朋友復制文檔，并根據您的要求更改一些點。
public class PrototypeDemo implements Cloneable{　　public Object clone(){　　　　Object object = null;　　　　try {　　　　　　object = super.clone();　　　　} catch (CloneNotSupportedException exception) {　　　　　　System.err.println("Not support cloneable");　　　　}　　　　return object;    }    ……}