Multi-state representation---interface for Java

/** *  * @authorAdministrator * Function: interface manifests polymorphism*/ PackageCom.test4; Public classTest { Public Static voidMain (string[] args) {//TODO auto-generated Method StubCarshop AShop =NewCarshop (); Ashop.sellcar (NewBMW ()); Ashop.sellcar (Newcherryqq ()); System.out.println ("Total Revenue:" +Ashop.getmoney ()); }}Interfacecar{//Car nameString getName (); //get the car price    intGetPrice ();}//BMWclassBMWImplementscar{@Override PublicString GetName () {//TODO auto-generated Method Stub        return"BMW"; } @Override Public intGetPrice () {//TODO auto-generated Method Stub        return300000; }}//Chery QQclassCherryqqImplementscar{@Override PublicString GetName () {//TODO auto-generated Method Stub        return"Cherryqq"; } @Override Public intGetPrice () {//TODO auto-generated Method Stub        return20000; }    }//Car Selling Shopclasscarshop{//Car Sales revenue    Private intMoney = 0; //Sell a car     Public voidSellcar (car car) {System.out.println ("Model:" +car.getname () + "unit Price" +Car.getprice ()); //increase the selling price of the car revenueMoney + =Car.getprice (); }        //Total Car Sales     Public intGetmoney () {return  This. Money; }    }

Multi-state representation---interface for Java