GoF:Prototype模式

小牛犊

1.意图：
 用原型实例制定创建对象的种类，并且通过拷贝这些原型创建新的对象。（G4）
例子：
public abstract class AbstractPrototype implements Cloneable{@Overrideprotected Object clone(){Object o=null;try {o=super.clone();} catch (CloneNotSupportedException e) {e.printStackTrace();}return o;}public abstract void say();public String getStrName() {return strName;}public void setStrName(String strName) {this.strName = strName;}private String strName;}public class PrototypeA extends AbstractPrototype {public PrototypeA(String name) {setStrName(name);}@Overridepublic void say() {System.out.println("PrototypeA");}}public class PrototypeB extends AbstractPrototype {public PrototypeB(String name) {setStrName(name);}@Overridepublic void say() {System.out.println("PrototypeB");}}public class Test {public static void main(String[] agrs) {AbstractPrototype p = new PrototypeA("fy");AbstractPrototype k = (AbstractPrototype) p.clone();AbstractPrototype e = (AbstractPrototype) p.clone();p.say();k.say();e.say();AbstractPrototype q = new PrototypeB("flh");AbstractPrototype c = (AbstractPrototype) q.clone();AbstractPrototype u = (AbstractPrototype) q.clone();q.say();c.say();u.say();}}    运行结果：
PrototypeAPrototypeAPrototypeAPrototypeBPrototypeBPrototypeB