how to create Interface example in java

interface cars{
    String CarName=null;
    int CarModelNo=0;
    public void display();
   
}
public class InterFaceExample implements cars{
     
    String  CarName="Maruti";
    @Override
    public void display() {
        // TODO Auto-generated method stub
        System.out.println("Car Name :"+CarName);
    }
    public static void main(String Dx[])
    {
       
        InterFaceExample IntEx=new InterFaceExample();
        IntEx.display();
    }

}