interface Elec{
	String brank(String p);
	default void price(int price){
		System.out.println( "电子产品的价钱为: ");
	}
}

class DianZi implements Elec{
	public String brank(String p){
		return p;
}
	public void price(int price){
		System.out.println("平板的价钱为: "+price);
	}
}
class comp implements Elec{
	public String brank(String p){
		return p;
		}
	public void price(int price){
		System.out.println("手机的价钱为: " +price);
		}
	}

public class d9 {
	public static void main(String[] args){
		Elec pr=null;
		pr=new DianZi();
		System.out.println(pr.brank("华为"));
		pr.price(4000);
		pr=new comp);
		System.out.println(pr.brank("荣耀"));
		pr.price(3500);
	}
}