test.java

这是尚学堂马士兵老师讲解的网上购物系统

package cn.chu;

interface Car{
	public void run();
	public void stop();
}

class Benz implements Car{

	public void run() {
		System.out.println("Benz 开动了");
		
	}

	public void stop() {
		System.out.println("Benz 停了");
		
	}
	
}

class Fory implements Car{

	public void run() {
		System.out.println("Fory 开动了");
		
	}

	public void stop() {
		System.out.println("Fory 停了");
	}	
}

class MiniBus implements Car{

	public void run() {
		System.out.println("MiniBus 开动了");
		
	}

	public void stop() {
		System.out.println("MiniBus 停了");
	}	
}

class BigBus implements Car{

	public void run() {
		System.out.println("BigBus 开动了");
		
	}

	public void stop() {
		System.out.println("BigBus 停了");
	}	
}

interface Factory{
	
}

class BusFactory implements Factory{
	public  Car getBus(String type){
		Car c=null;
		try {
			c=(Car)Class.forName("cn.chu."+type).newInstance();
		} catch (InstantiationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}		
		return c;
		
	}
}

class CarFactory implements Factory{
	public  Car getCar(String type){
		Car c=null;
		try {
			c=(Car)Class.forName("cn.chu."+type).newInstance();
		} catch (InstantiationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}		
		return c;
		
	}
}

public class Test {
	public static void main(String [] args){
		Car c=null;
		CarFactory af=new CarFactory();
		c=af.getCar("Bus");
		if(c==null){
			return;
		}
		c.run();
		c.stop();
		
		
	}

}