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
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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<fruit> list = new arraylist<fruit>();
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<fruit> 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<fruit> 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<fruit> 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<fruit> 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<fruit> list = new arraylist<fruit>();
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 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<fruit> 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<fruit> 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<fruit> 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<fruit> 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<fruit> 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());
}
}
// 查看水果
public void check(arraylist<fruit> 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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