import java.awt.Color;
abstract class Car {
       //ݳԱ
       public Color color;                     //ɫ 
       public int gearNum;                    //λ 
       public String  tiretype;                //̥ͺ 
       public float engine;                    // 
        //󷽷
       public abstract void shiftgear();           // 
       public abstract void brake();             //ɲ 
       public abstract void aircon();             // 
       public abstract void headlight();          // 
}
 class Audi extends Car{ 
     	static int gearNum=5;                 //gearNumΪ
 	public Audi () { 
   	     tiretype="GoodTire2085BT";           //̥ͺ
   	     engine=2400.0f;//
     	}
    	 public void  shiftgear(){           //
	     System.out.println("γʽ"+ gearNum+"");
	} 
	public void brake(){System.out.println("ɲϵͳ");}   //ɲ 
        public void aircon(){};                         // 
        public void headlight(){};                    // 
}
public class MyCar extends Audi{
         private Color color;
         public MyCar() {	color=Color.blue; } //óɫ    
      
     	 public static void main(String args[]) {
           MyCar mycar=new MyCar();
   	       mycar.equipment();
  	       mycar.shiftgear ();
  	       mycar.brake();
     	 }
     	 public void equipment(){
 	      System.out.println("ҵĳλ"+this.gearNum);
  	      System.out.println("ҵĳɫ"+this.color);
	      System.out.println("ҵĳ̥ͺţ"+this.tiretype);
	      System.out.println("ҵĳ"+this.engine);
	}
	public void shiftgear(){             //-д·
	      super.shiftgear();	
	      System.out.println("ҵĳʽ "+this.gearNum+"" );
	}
}


