本文实例为大家分享了java实现超市管理系统的具体代码,供大家参考,具体内容如下
实现功能
使用选择结构,循环结构,数组的知识实现一个超市管理系统
运行结果:货物清单:
添加商品功能:
删除商品功能:
修改商品:
商品货物实体类
import java.util.Arrays; public class Goods { private int id; private double price; private String name; public Goods(int id, double price, String name) { this.id = id; this.price = price; this.name = name; } public int getId() { return id; } public void setId(int id) { this.id = id; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Goods() { } //增加商品 public Goods[] add(Goods[]goods,Goods newGood){ goods= Arrays.copyOf(goods,goods.length+1); goods[goods.length-1]=newGood; return goods; } //删除商品 public static Goods[] del(Goods[]goods,int id){ int i=0; while(true){ if(goods[i].getId()==id){ goods[i]=null; return goods; } i++; if(i>=goods.length){ return goods; } } } //添加商品 public static Goods[] change(Goods[]goods,int id,int newId,double newPrice,String newName){ int i=0; while (true){ if(goods[i].getId()==id){ goods[i].setId(newId); goods[i].setPrice(newPrice); goods[i].setName(newName); return goods; } i++; if(i>=goods.length){ return goods; } } } }
超市管理系统类
import java.util.Scanner; public class marketManager { public static void main(String[] args) { Scanner sc = new Scanner(System.in); Goods g1=new Goods(1000,10,\"笔记本\"); Goods g2=new Goods(1001,2,\"西红柿\"); Goods g3=new Goods(1002,5,\"辣条\"); Goods []goods={g1,g2,g3}; while (true) { System.out.println(\"========超市管理系统=======\"); System.out.println(\"1.货物清单 2.增加商品 3.删除商品 4.修改商品 5.退出\"); System.out.println(\"请输入你要操作的编号:\"); int i = sc.nextInt(); switch (i){ case 1: System.out.println(\"=======商品清单=======\"); System.out.println(\"商品编号\"+\"\\t\\t\"+\"商品单价\"+\"\\t\\t\"+\"商品名称\"); for (Goods a:goods) { if(a==null){ continue; } System.out.println(a.getId()+\"\\t\\t\"+a.getPrice()+\"\\t\\t\"+a.getName()); } continue; case 2: System.out.println(\"你选择的是增加商品的功能\"); System.out.println(\"请输入你要添加的编号:\"); int Id = sc.nextInt(); System.out.println(\"请输入你要添加的商品价格:\"); double price = sc.nextDouble(); System.out.println(\"请输入你要添加的商品名称\"); String name = sc.next(); Goods good=new Goods(Id,price,name); goods = good.add(goods, good); System.out.println(\"添加成功!\"); continue; case 3: System.err.println(\"你选择的是删除商品功能\"); System.out.println(\"请输入你要操作的编号:\"); Id = sc.nextInt(); goods=Goods.del(goods,Id); System.out.println(\"删除成功!\"); continue; case 4: System.out.println(\"你选择的是修改商品功能\"); System.out.println(\"请输入你要操作的编号:\"); Id=sc.nextInt(); System.out.println(\"请输入修改后的编号:\"); int newId = sc.nextInt(); System.out.println(\"请输入修改后的价格:\"); double newPrice = sc.nextDouble(); System.out.println(\"请输入修改后的商品名称:\"); String newName=sc.next(); goods=Goods.change(goods,Id,newId,newPrice,newName); continue; case 5: return; } } } }
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