java子类继承父类实例-披萨的选择实现代码

package zuoye;
import java.util.Scanner;
//父类
public class Pizza {
	String name;
	double price;
	int size;
	public Pizza(String name){
		this.name=name;
	}
	public void display(){
		Scanner sc=new Scanner(System.in);
		System.out.println("请输入披萨大小：");
		size=sc.nextint();
		System.out.println("请输入披萨价格：");
		price=sc.nextdouble();
	}
}

package zuoye;
import java.util.Scanner;
//子类培根披萨
public class PeiGen extends Pizza {
	// double weight;
	public PeiGen(String name) {
		super(name);
	}
	public double peigen() {
		System.out.println("输入培根克数：");
		Scanner s = new Scanner(System.in);
		return s.nextdouble();
	}
}

package zuoye;
import java.util.Scanner;
//子类海鲜披萨
public class SeaFood extends Pizza{
	public SeaFood(String name) {
		super(name);
	}
	public String seafood() {
		System.out.println("输入配料信息：");
		Scanner s=new Scanner(System.in);
		String peiliao=s.next();
		return peiliao;
	}
}

package zuoye;
import java.util.Scanner;
public class Work {
	public static void main(String[] args) {
		System.out.println("请选择想要的披萨（1.培根披萨 2.海鲜披萨）");
		Scanner s = new Scanner(System.in);
		int n = s.nextint();
		if (n == 1) {
			PeiGen pg = new PeiGen("培根披萨");
			double b=pg.peigen();
			pg.display();
			System.out.println("名称" + pg.name + "n价格：" + pg.price + "n大小：" + pg.size + "n培根克数：" +b);
		} else if (n == 2) {
			SeaFood sf = new SeaFood("海鲜披萨");
			String a=sf.seafood();
			sf.display();
			System.out.println("名称" + sf.name + "n价格：" + sf.price + "n大小：" + sf.size + "n配料：" +a);
		}
	}
}