Triển khai các phương thức abstract

public class Main {  
	static class Toyota extends Car {
        public Toyota() {
            super();
        }

        // Create soundHorn() for Toyota
        public ____ ____() {
            System.out.println("____");
        }
    }

    static class Mercedes extends Car {
    	// Create soundHorn() for Mercedes
        public void ____() {
            System.out.println("____");
        }

        public Mercedes() {
            super();
        }  
    }
    
    public static void main(String[] args) {
        Toyota myToyota = new Toyota();
        Mercedes myMercedes = new Mercedes();
        
        // Call "soundHorn" for myToyota and myMercedes
        ____.____();
        ____.____();
    }
    
}