代码优雅之路-避免大量new

1. 使用工厂模式-通用1

//抽象产品类
public abstract class Product {
	public void method1(){
		//所有产品的共性
	}
	//抽象方法   具体有继承它的类去实现
	public abstract void method2();
}

//产品实现类 

public class ConcretProduct1 extends Product{

	@Override
	public void method2() {
		//TODO
	}

}

package factory.total;

public class ConcretProduct2 extends Product{

	@Override
	public void method2() {
		//TODO
	}

}

//抽象工厂类 

public abstract class Creator {
	public abstract <T extends Product> T createMethod(Class<T> c);
		
}


//具体工厂类： 

public class ConcreteCreator extends Creator{

	@Override
	public <T extends Product> T createMethod(Class<T> c) {
		Product pro = null;
		try {
			pro = (Product) Class.forName(c.getName()).newInstance();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
		return (T) pro;
	}

}


//场景模拟类 
public class Client {
	public static void main(String[] args) {
		Creator creator = new ConcreteCreator();
		Product pro = creator.createMethod(ConcretProduct1.class);
		pro.method1();
		pro.method2();
	}
}