javaSE第一个项目：编写程序实现匹萨制作

 

具体实现代码如下：

披萨类---》父类

package smo.msh.demoLast;

/**
 * @Auther:zhangjj
 * @Date:2021/3/25 - 03-25-9:29
 * @Description:smo.msh.demoLast
 * @version:1.0
 */
/**项目需求：接收用户需求，选择需要制造的匹萨，可供选择的有培根和水果匹萨
 * */
//披萨类---》父类
public  /*abstract*/ class Pizza {
    //属性：名称，价格，大小
    String name;
    double price;
    int size;

    //方法：展示
    /*abstract void Display();*/
    public String showP(){
        if(name==null||price==0||size==0){
            return null;
        }
        return  "\n匹萨价格(元):" + price +
                "元\n匹萨尺寸(寸):" + size+"寸\n"
                ;
    }
    //构造器

    public Pizza() {

    }
    public Pizza( double price, int size) {
        //this.name = name;
        this.price = price;
        this.size = size;
    }

   /* public Pizza(String name) {
        this.name = name;
    }*/
}

子类---》水果披萨

package smo.msh.demoLast;

/**
 * @Auther:zhangjj
 * @Date:2021/3/25 - 03-25-9:31
 * @Description:smo.msh.demoLast
 * @version:1.0
 */
public class Fruits extends Pizza{
    //属性：水果
    String Durian, mango, strawberry;
    String type,type1,type2,type3;
    //方法：展示
    public String show(){
        String ssay = null;
        this.name = "水果匹萨";
        showFruits();
        if(this.strawberry!=null){
            this.price = (size+20)*9;
            ssay =type ;
        }
        else if(this.mango!=null){
            this.price = (size+16)*9;
            ssay =showFruits(Durian,mango);;
        }
        else if(this.Durian!=null){
            this.price = (size+12)*9;
            ssay =showFruits(Durian); ;
        }
        /*if(this.strawberry!=null){
            this.price = (size+20)*9;
        }
        else if(this.mango!=null){
            this.price = (size+16)*9;
            type = mango+","+Durian;
        }
        else if(this.Durian!=null){
            this.price = (size+12)*9;
            type = Durian;
        }
*/
        return "匹萨名称:"+this.name+super.showP()+"添加配料："+ssay+"\n";
       /* return "匹萨名称:"+this.name+super.showP()+"添加配料："+type+"\n";*/
    }
    public  String showFruits(){
        return type = Durian+"，"+strawberry+"，"+mango;
    }
    public String showFruits(String Durian){
        return type1 = Durian;
    }
    public String showFruits(String Durian,String mango){
        /*String Fruit;*/
        return type2= Durian+"，"+mango;
    }
    public String showFruits(String Durian,String mango,String strawberry){
        /*String Fruit;*/
        return type3 = Durian+"，"+strawberry+"，"+mango;
    }
    //构造器
    public Fruits() {
        this.name = "水果匹萨";
    }

    public Fruits(String durian) {
        Durian = durian;
    }

    public Fruits(String durian, String mango) {
        Durian = durian;
        this.mango = mango;
    }

    public Fruits(String durian, String mango, String strawberry) {
        Durian = durian;
        this.mango = mango;
        this.strawberry = strawberry;
    }
}

 

子类---》培根匹萨

package smo.msh.demoLast;

/**
 * @Auther:zhangjj
 * @Date:2021/3/25 - 03-25-9:30
 * @Description:smo.msh.demoLast
 * @version:1.0
 */

public class Bacon extends Pizza{
    int weight;

    @Override
    public String toString() {
        this.price = (weight+size)*6;
        return "匹萨名称："+this.name+super.showP(/*price,size*/)+"培根克数(克):"+this.weight+"克\n";
    }

    public Bacon() {
        this.name="培根匹萨";
    }

    public Bacon(int weight) {
        this.weight = weight;
    }

    public Bacon(double price, int size, int weight) {
       /* this.name="培根匹萨";*/
        super(price,size);
        this.weight = weight;
    }
}

 

 

测试类---》main函数

package smo.msh.demoLast;

import java.util.Scanner;

/**
 * @Auther:zhangjj
 * @Date:2021/3/25 - 03-25-20:49
 * @Description:smo.msh.demoLast
 * @version:1.0
 */
public class test1 {
    public static void main(String[] args) {
        while (true){
            int choose;
            System.out.println("\n\t选择你想要的匹萨种类：1.培根匹萨\t2.水果匹萨\n\t\t\t\t\t\t\t0.退出\t");
            Scanner input = new Scanner(System.in);
            choose = input.nextInt();
            switch (choose){
                case 1:{
                    Bacon one = new Bacon();
                    System.out.println("请输入培根的克数：");
                    one.weight = input.nextInt();
                    System.out.println("请输入披萨的大小：");
                    one.size = input.nextInt();
                    System.out.println(one);
                    break;
                }
                case 2:{
                    System.out.println("请输入披萨的大小(寸)：");
                    int Pizza_size = input.nextInt();
                    System.out.println("你想要选择几种配料？");
                    int choose2 = input.nextInt();
                    String ss[] =new String[choose2];
                    for(int i=0;i<choose2;++i){
                        System.out.println("请输入你想要的第"+(i+1)+"中匹萨配料种类：");
                        Scanner in = new Scanner(System.in);
                        String s =  in.nextLine();
                        ss[i]=s;
                    }
                    switch (choose2){
                        case 1:{
                            Fruits one1 = new Fruits(ss[0]);
                            one1.size=Pizza_size;
                            System.out.println(one1.show());
                            break;
                        }
                        case 2:{
                            Fruits one2 = new Fruits(ss[0],ss[1]);
                            one2.size=Pizza_size;
                            System.out.println(one2.show());
                            break;
                        }
                        case 3:{
                            Fruits one3 = new Fruits(ss[0],ss[1],ss[2]);
                            one3.size=Pizza_size;
                            System.out.println(one3.show());
                            break;
                        }
                    }
                    break;
                }
                case 0:return;
                default:{
                    System.out.println("是你不喜欢这两种吗，但是只有这两种请重新选择");
                }break;
            }
        }
    }

}