反射实现动态工厂设计模式

package com.zokkk.spring;
interface IMessage{
	void send();
}
interface CloudMessage{
	void send();
}
class MyIMessage implements IMessage{
	public void send() {
		System.out.println("IMessage:MyIMessage");
	}
}
class MyCloudMessage implements CloudMessage{
	public void send() {
		System.out.println("CloudMessage:MyCloudeMessage");
	}
}
class Factory{
	public static<T> T getInstance(String className,Class<T> clazz) {
		T instance=null;
		try {
			instance=(T)Class.forName(className).getDeclaredConstructor().newInstance();
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		return instance;
	}
}
public class JavaDemo {
	public static void main(String[] args) {
		IMessage iMessage=Factory.getInstance("com.zokkk.spring.MyIMessage", IMessage.class);
		CloudMessage cMessage=Factory.getInstance("com.zokkk.spring.MyCloudMessage", CloudMessage.class);
		iMessage.send();
		cMessage.send();
	}
}

运行结果：