java实现水果超市管理系统

java实现水果超市管理系统

本文为大家分享了java实现水果超市管理系统的具体代码，供大家参考，具体内容如下

首先建立水果类的界面

public class Fruit {

//定义ID

private String id;

//定义名称

private String name;

//定义价格

private int price;

//定义单位

private String unit;

//定义数量

private int number;

public Fruit(String id, String name, int price, String unit) {

super();

this.id = id;

this.name = name;

this.price = price;

this.unit = unit;

}

public Fruit() {

super();

// TODO Auto-generated constructor stub

}

public String getId() {

return id;

}

public void setId(String id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getPrice() {

return price;

}

public void setPrice(int price) {

this.price = price;

}

public String getUnit() {

return unit;

}

public void setUnit(String unit) {

this.unit = unit;

}

public int getNumber() {

return number;

}

public void setNumber(int number) {

this.number = number;

}

//获取价格

public int getMoney(){

return price * number;

}

}

水果超市的界面

import java.io.IOException;

import java.util.Scanner;

public class FruitTest {

public static void main(String[] args) throws IOException {

Scanner sc = new Scanner(System.in);

Shopper shopper = new Shopper();

Manager manager = new Manager();

while(true){

System.out.println( " 欢迎光临水果系统");

System.out.println("请输入你的角色:(1.顾客 2.管理员 3.退出)");

int choice = sc.nextInt();

switch(choice){

case 1:

//顾客

shopper.shop();

break;

case 2:

//管理员

manager.manager();

break;

case 3:

System.exit(0);

default:

System.out.println("你的输入有误!");

}

}

}

}

顾客类

import java.io.BufferedReader;

import java.io.FileReader;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Scanner;

public class Shopper {

public void shop() throws IOException {

Scanner sc = new Scanner(System.in);

ArrayList list = new ArrayList();

check(list);

while (true) {

System.out

.println(" 欢迎光临水果系统");

System.out

.println("请输入你的操作:(1.查看水果 2.购买水果 3.结账 4.退出)");

int choice = sc.nextInt();

switch (choice) {

case 1:

// 查看水果

print(list);

break;

case 2:

// 购买水果

buy(list);

break;

case 3:

// 结账

checkOut(list);

break;

case 4:

// 退出

return;

default:

System.out.println("你输入的操作有误!");

}

}

}

//结账

private void checkOut(ArrayList list) {

int sum = 0;

for (int i = 0; i < list.size(); i++) {

Fruit f = list.get(i);

sum += f.getMoney();

}

if(sum>200){

int newSum = (int) (sum * 0.9);

System.out.println("金额：" + sum+ "元, 优惠价格："+ newSum+"元");

}else{

System.out.println("金额：" + sum+"元");

}

//结完账后，将数量清0

for (int i = 0; i < list.size(); i++) {

Fruit f = list.get(i);

f.setNumber(0);

}

}

// 购买水果

public void buy(ArrayList list) throws IOException {

Scanner sc1 = new Scanner(System.in);

Scanner sc2 = new Scanner(System.in);

print(list);

while (true) {

System.out.println("购买超过200元，享受九折优惠！");

System.out.println("请输入想要购买的水果的ID：(如果不想购买，请输入-1退出)");

String id = sc1.nextLine();

if ("-1".equals(id)) {

System.out.println("购买已结束，请去结账 ");

return;

} else {

boolean flag = false;

for (int i = 0; i < list.size(); i++) {

Fruit f = list.get(i);

if(f.getId().equals(id)) {

System.out.println("请输入购买" + f.getName() + "数量： ");

int num = sc2.nextInt();

f.setNumber(num);

flag = true;

}

}

if(!flag){

System.out.println("你输入的水果ID不正确,请重新输入");

}

}

}

}

// 查看水果

public void check(ArrayList list) throws IOException {

BufferedReader br = new BufferedReader(new FileReader("fruit.txt"));

String line;

while ((line = br.readLine()) != null) {

String[] str = line.split(" ");

Fruit f = new Fruit(str[0], str[1], Integer.parseInt(str[2]),

str[3]);

list.add(f);

}

br.close();

}

public void print(ArrayList list) {

System.out.println("ID\t水果\t价格\t单位");

for (int i = 0; i < list.size(); i++) {

Fruit f = list.get(i);

System.out.println(f.getId() + "\t" + f.getName() + "\t"

+ f.getPrice() + "\t" + f.getUnit());

}

}

}

管理员类

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Scanner;

public class Manager {

public void manager() throws IOException {

if (load()) {

Scanner sc = new Scanner(System.in);

while (true) {

ArrayList list = new ArrayList();

check(list);

System.out

.println("请输入您的操作： (1.查看水果种类 2.增加水果种类 http://3.修改水果种类 4.删除水果种类 5退出)");

int choice = sc.nextInt();

switch (choice) {

case 1:

// 查看水果种类

print(list);

break;

case 2:

// 增加水果种类

addFruit(list);

break;

case 3:

// 修改水果种类

reverse(list);

break;

case 4:

// 删除水果种类

remove(list);

break;

case 5:

// 退出

return;

default:

System.out.println("你输入的操作有误!");

break;

}

}

} else {

return;

}

}

public void remove(ArrayList list) throws IOException {

Scanner sc = new Scanner(System.in);

print(list);

System.out.println("请输入要删除的水果ID: ");

String id = sc.nextLine();

for (int i = 0; i < list.size(); i++) {

Fruit f = list.get(i);

if(f.getId().equals(id)){

list.remove(i);

write(list);

System.out.println("删除成功");

return;

}

}

System.out.println("找不到要删除的水果ID!");

}

//修改水果

public void reverse(ArrayList list) throws IOException {

Scanner sc1 = new Scanner(System.in);

Scanner sc2 = new Scanner(System.in);

print(list);

System.out.println("请输入要修改的水果ID: ");

String id = sc1.nextLine();

for (int i = 0; i < list.size(); i++) {

Fruit f = list.get(i);

if(f.getId().equals(id)){

System.out.println("请输入水果的名称: ");

String name = sc1.nextLine();

System.out.println("请输入水果的价格: ");

int price = sc2.nextInt();

System.out.println("请输入水果的单位: ");

String unit = sc1.nextLine();

f.setName(name);

f.setPrice(price);

f.setUnit(unit);

write(list);

System.out.println("修改成功");

return;

}

}

System.out.println("找不到要修改的水果ID!");

}

//增加水果

public void addFruit(ArrayList list) throws IOException {

Scanner sc1 = new Scanner(System.in);

Scanner sc2 = new Scanner(System.in);

print(list);

System.out.println("请输入要增加水果的ID: ");

String id = sc1.nextLine();

for (int i = 0; i < list.size(); i++) {

Fruit f = list.get(i);

if(f.getId().equals(id)){

System.out.println("水果ID名重复!");

return;

}

}

System.out.println("请输入水FFOmVtT果的名字: ");

String name = sc1.nextLine();

System.out.println("请输入水果的价格: ");

int price = sc2.nextInt();

System.out.println("请输入水果的单位: ");

String unit = sc1.nextLine();

Fruit f = new Fruit(id, name, price, unit);

list.add(f);

write(list);

System.out.println("增加成功");

}

//写入新加的种类

private void write(ArrayList list) throws IOException {

BufferedWriter bw = new BufferedWriter(new FileWriter("fruit.txt"));

for (int i = 0; i < list.size(); i++) {

Fruit f = list.get(i);

bw.write(f.getId()+" " + f.getName() + " " + f.getPrice() + " " + f.getUnit());

bw.newLine();

}

bw.close();

}

public void print(ArrayList list) {

System.out.println("ID\t水果\t价格\t单位");

for (int i = 0; i < list.size(); i++) {

Fruit f = list.get(i);http://

System.out.println(f.getId() + "\t" + f.getName() + "\t"

+ f.getPrice() + "\t" + f.getUnit());

}

}

// 查看水果

public void check(ArrayList list) throws IOException {

BufferedReader br = new BufferedReader(new FileReader("fruit.txt"));

String line;

while ((line = br.readLine()) != null) {

String[] str = line.split(" ");

Fruit f = new Fruit(str[0], str[1], Integer.parseInt(str[2]),

str[3]);

list.add(f);

}

br.close();

}

// 登陆系统

public boolean load() throws FileNotFoundException, IOException {

Scanner sc = new Scanner(System.in);

System.out.println("请输入用户名： ");

String username = sc.nextLine();

System.out.println("请输入密码： ");

String password = sc.nextLine();

BufferedReader br = new BufferedReader(new FileReader("admin.txt"));

String line = br.readLine();

String[] str = line.split(",");

if (str[0].equals(username) && str[1].equals(password)) {

System.out.println("欢迎您进入水果管理系统： " + username);

return true;

} else {

System.out.println("你的用户名或密码输入不正确，无法进入管理系统");

return false;

}

}

}

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