Java基础实现自动贩卖机 |
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Java基础实现自动贩卖机
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通过JavaSE的选择、循环、方法的重写、有参构造等知识点模拟实现自动贩卖机的功能 User，用户操作端 import java.util.Scanner; public class User { public static void main(String[] args) { Scanner sc = new Scanner(System.in); shopping shopping = new shopping(); System.out.println("欢迎使用自动贩卖机"); System.out.println("是否进行购物：1、是\t2、否"); int select = sc.nextInt(); if (select == 1){ shopping.show(1); System.out.println("请选择相应序号"); int choose = sc.nextInt(); while (choose >= 5){ if (choose == 5){ System.out.println("库存充足哟。。。"); System.out.println("请再次选择相应序号"); }else { System.out.println("没有此商品，请重新选择"); } choose = sc.nextInt(); } System.out.println("请输入购买数量"); int num = sc.nextInt(); while (true){ shopping.shop(choose,num); System.out.println(); shopping.show(); System.out.println("如继续购物，请再次选择相应序号"); choose = sc.nextInt(); while (choose >= 6){ if (choose == 6){ shopping.shop(6); System.out.println("请再次选择相应序号"); }else { System.out.println("没有此商品，请重新选择"); } choose = sc.nextInt(); } if(choose == 5){ System.out.println("欢迎下次光临！"); break; } System.out.println("请输入购买数量"); num = sc.nextInt(); } }else { System.out.println("欢迎下次光临！"); } } }shopping，数据处理 public class shopping { goods cola = new goods("可口可乐",3,10); goods noodles = new goods("红烧牛肉面",5.5,10); goods ham = new goods("火腿肠",2.5,10); goods spicy = new goods("卫龙",0.5,100); public void show(){ System.out.println("现还有以下商品供您选择："); System.out.println("1、"+cola.goodsname+"\t价格："+cola.price+"\t剩余："+cola.number); System.out.println("2、"+noodles.goodsname+"\t价格："+noodles.price+"\t剩余："+noodles.number); System.out.println("3、"+ham.goodsname+"\t价格："+ham.price+"\t剩余："+ham.number); System.out.println("4、"+spicy.goodsname+"\t价格："+spicy.price+"\t剩余："+spicy.number); System.out.println("5、退出购物"); System.out.println("6、一键补货"); } public void show(int i){ System.out.println("现还有以下商品供您选择："); System.out.println("1、"+cola.goodsname+"\t价格："+cola.price+"\t剩余："+cola.number); System.out.println("2、"+noodles.goodsname+"\t价格："+noodles.price+"\t剩余："+noodles.number); System.out.println("3、"+ham.goodsname+"\t价格："+ham.price+"\t剩余："+ham.number); System.out.println("4、"+spicy.goodsname+"\t价格："+spicy.price+"\t剩余："+spicy.number); System.out.println("5、一键补货"); } public void shop(int choose,int num){ switch (choose){ case 1: if(cola.number == 0){ System.out.println("已售罄，等待补货！"); }else if (num>cola.number){ System.out.println("库存不足，请重新选择"); }else { cola.number = cola.number - num; success(); } break; case 2: if(noodles.number == 0){ System.out.println("已售罄，等待补货！"); }else if (num>noodles.number){ System.out.println("库存不足，请重新选择"); }else { noodles.number = noodles.number - num; success(); } break; case 3: if(ham.number == 0){ System.out.println("已售罄，等待补货！"); }else if (num>ham.number){ System.out.println("库存不足，请重新选择"); }else { ham.number = ham.number - num; success(); } break; case 4: if(spicy.number == 0){ System.out.println("已售罄，等待补货！"); }else if (num>spicy.number){ System.out.println("库存不足，请重新选择"); }else { spicy.number = spicy.number - num; success(); } break; case 5: System.out.println("欢迎下次光临！"); break; case 6: System.out.println("补货ing......"); this.cola.number = 10; this.noodles.number = 10; this.ham.number = 10; this.spicy.number = 100; break; default: System.out.println("没有此商品，请重新选择"); break; } } public void shop(int choose){ switch (choose){ case 5: System.out.println("欢迎下次光临！"); break; case 6: System.out.println("补货ing......"); System.out.println("补货完毕"); System.out.println(); this.cola.number = 10; this.noodles.number = 10; this.ham.number = 10; this.spicy.number = 100; break; default: System.out.println("没有此商品，请重新选择"); break; } } public void success(){ System.out.println("扫码支付中。。。"); System.out.println("正在处理。。。"); System.out.println("购买成功！"); } }goods，构造 public class goods { String goodsname; //商品名 double price; //价格 int number; //剩余数量 public goods() { } public goods(String goodsname, double price, int number) { this.goodsname = goodsname; this.price = price; this.number = number; } }效果如下： |
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