用意：通过给出一个原型对象来指明所要创建的对象的类型，然后用复制这个原型对象的办法创建出更多同类型的对象。

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();

    }
}


参考资料：
1. 《Java与模式》
2. http://terrylee.cnblogs.com/archive/2006/01/16/317896.html
3. Design Patterns With Code
4. Thinking in Patterns

欢迎大家访问我的个人网站 萌萌的IT人