用意：通過給出一個原型對象來指明所要創(chuàng)建的對象的類型，然后用復(fù)制這個原型對象的辦法創(chuàng)建出更多同類型的對象。

1. com.cleversoft.designpatterns.prototype.Prototype.java:

package ?com.cleversoft.designpatterns.prototype;

 interface ?Prototype? {
????Object?clone();

????String?getName();

???? void ?execute();
}

2. com.cleversoft.designpatterns.prototype.This.java:
package?com.cleversoft.designpatterns.prototype;

class?This?implements?Prototype?{
????public?Object?clone()?{
????????return?new?This();
????}

????public?String?getName()?{
????????return?"This";
????}

????public?void?execute()?{
????????System.out.println("This:?execute");
????}
}

3. com.cleversoft.designpatterns.prototype.That.java:
package?com.cleversoft.designpatterns.prototype;

class?That?implements?Prototype?{
????public?Object?clone()?{
????????return?new?That();
????}

????public?String?getName()?{
????????return?"That";
????}

????public?void?execute()?{
????????System.out.println("That:?execute");
????}
}

4. com.cleversoft.designpatterns.prototype.PrototypesModule.java:
package?com.cleversoft.designpatterns.prototype;

class?PrototypesModule?{
????private?static?Prototype[]?prototypes?=?new?Prototype[9];

????private?static?int?total?=?0;

????public?static?void?addPrototype(Prototype?obj)?{
????????prototypes[total++]?=?obj;
????}

????public?static?Object?findAndClone(String?name)?{
????????for?(int?i?=?0;?i?<?total;?i++)
????????????if?(prototypes[i].getName().equals(name))
????????????????return?prototypes[i].clone();
????????System.out.println(name?+?"?not?found");
????????return?null;
????}
}

5. com.cleversoft.designpatterns.prototype.Main.java:
package?com.cleversoft.designpatterns.prototype;

public?class?Main?{
????public?static?void?initializePrototypes()?{
????????PrototypesModule.addPrototype(new?This());
????????PrototypesModule.addPrototype(new?That());
????}

????public?static?void?main(String[]?args)?{
????????initializePrototypes();
????????Object[]?objects?=?new?Object[9];
????????int?total?=?0;

????????for?(int?i?=?0;?i?<?args.length;?i++)?{
????????????objects[total]?=?PrototypesModule.findAndClone(args[i]);
????????????if?(objects[total]?!=?null)
????????????????total++;
????????}
????????for?(int?i?=?0;?i?<?total;?i++)
????????????((Prototype)?objects[i]).execute();

????}
}


參考資料：
1. 《Java與模式》
2. http://terrylee.cnblogs.com/archive/2006/01/16/317896.html
3. Design Patterns With Code
4. Thinking in Patterns

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