java超市价格列表代码,java商场购物清单代码

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Java编程，简单超市系统！！跪求啊

import java.util.Vector; class Supermarket{ Vector market = null; Supermarket(){ market = new Vector(); } public void append(Goods g){ market.addElement(g); } public void delete(Goods g){ market.removeElement(g); } public void query(Goods g){ for(int i = 0;imarket.size();i++){ if((market.elementAt(i)).equals(g) == true){ g.showMe(); } } } } class Goods{ private String name; private double price; private int num; public Goods(String name,double price,int num){ this.name=name; this.price = price; this.num = num; } public void sale(double buyprice){ if(num==0){ System.out.println("购买商品已售空"); return; } if(buypricethis.price){ System.out.println("余额不足"); }else{ num--; } } public void add(int quantity){ num+=quantity; } public void showMe(){ System.out.println("商品名称："+this.name+" 商品价格："+this.price+"$ "+"商品个数："+this.num); } } //很多地方给的不是很详细，只能这么凭理解写，测试main方法自己写。

相关问答

Q1: 编写java代码要求顾客输入购买多少斤当用户输入为10斤以内，则输出用户应支付金额？

2、public class Test11 {

public static void main(String[] args) {

System.out.println("滞贸旅客的人数" + (1189 - 108*10) );

}

3、public class Test11 {

public static void main(String[] args) {

try {

Scanner scanner = new Scanner(System.in);

System.out.print("输入购买鸡蛋（斤）：");

int number = scanner.nextInt();

if(number10){

throw new RuntimeException("不允许购买这么多！");

}

else {

System.out.println("用户应支付金额"+number*3.98);

}

catch (Exception e){

System.out.println(e.getMessage());

}

Q2: 使用JAVA 编写一个程序，显示5中商品价格，用户可以选择多种商品并在其后的文本框输入购买的数量。

用java Swing做的？给你个代码，还有运行结果图

package my.test.main;

import java.awt.BorderLayout;

import java.awt.EventQueue;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.ComponentEvent;

import java.awt.event.ComponentListener;

import java.awt.event.KeyAdapter;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.SwingUtilities;

import javax.swing.border.EmptyBorder;

import javax.swing.event.AncestorEvent;

import javax.swing.event.AncestorListener;

import javax.swing.event.CaretEvent;

import javax.swing.event.CaretListener;

import javax.swing.JLabel;

import javax.swing.JTextField;

public class Purchase extends JFrame {

private JPanel contentPane;

private JTextField textField;

private JTextField textField_1;

private JTextField textField_2;

private JTextField textField_3;

private JTextField textField_4;

private JLabel label_9;

/**

* Launch the application.

public static void main(String[] args) {

EventQueue.invokeLater(new Runnable() {

public void run() {

try {

Purchase frame = new Purchase();

frame.setVisible(true);

} catch (Exception e) {

e.printStackTrace();

}

});

}

/**

* Create the frame.

public Purchase() {

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setBounds(100, 100, 450, 300);

contentPane = new JPanel();

contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

setContentPane(contentPane);

contentPane.setLayout(null);

JLabel label = new JLabel("\u5546\u54C11");

label.setBounds(56, 40, 54, 15);

contentPane.add(label);

JLabel label_1 = new JLabel("\u5546\u54C12");

label_1.setBounds(56, 70, 54, 15);

contentPane.add(label_1);

JLabel label_2 = new JLabel("\u5546\u54C13");

label_2.setBounds(56, 100, 54, 15);

contentPane.add(label_2);

JLabel label_3 = new JLabel("\u5546\u54C14");

label_3.setBounds(56, 130, 54, 15);

contentPane.add(label_3);

JLabel label_4 = new JLabel("\u5546\u54C15");

label_4.setBounds(56, 160, 54, 15);

contentPane.add(label_4);

JLabel label_5 = new JLabel("\u5546\u54C1\u540D\u79F0");

label_5.setBounds(56, 7, 54, 15);

contentPane.add(label_5);

JLabel label_6 = new JLabel("单价");

label_6.setBounds(179, 7, 54, 15);

contentPane.add(label_6);

JLabel label_7 = new JLabel("数量");

label_7.setBounds(307, 7, 54, 15);

contentPane.add(label_7);

JLabel label_8 = new JLabel("总价");

label_8.setBounds(145, 224, 54, 15);

contentPane.add(label_8);

label_9 = new JLabel("0");

label_9.setBounds(209, 224, 54, 15);

contentPane.add(label_9);

JLabel label_10 = new JLabel("10");

label_10.setBounds(185, 40, 54, 15);

contentPane.add(label_10);

JLabel label_11 = new JLabel("20");

label_11.setBounds(185, 70, 54, 15);

contentPane.add(label_11);

JLabel label_12 = new JLabel("30");

label_12.setBounds(185, 100, 54, 15);

contentPane.add(label_12);

JLabel label_13 = new JLabel("40");

label_13.setBounds(185, 130, 54, 15);

contentPane.add(label_13);

JLabel label_14 = new JLabel("50");

label_14.setBounds(185, 160, 54, 15);

contentPane.add(label_14);

textField = new JTextField();

textField.setBounds(295, 37, 66, 21);

contentPane.add(textField);

textField.setColumns(10);

textField.addKeyListener(new CalcTotle());

textField_1 = new JTextField();

textField_1.setColumns(10);

textField_1.setBounds(295, 67, 66, 21);

contentPane.add(textField_1);

textField_1.addKeyListener(new CalcTotle());

textField_2 = new JTextField();

textField_2.setColumns(10);

textField_2.setBounds(295, 97, 66, 21);

contentPane.add(textField_2);

textField_2.addKeyListener(new CalcTotle());

textField_3 = new JTextField();

textField_3.setColumns(10);

textField_3.setBounds(295, 127, 66, 21);

contentPane.add(textField_3);

textField_3.addKeyListener(new CalcTotle());

textField_4 = new JTextField();

textField_4.setColumns(10);

textField_4.setBounds(295, 157, 66, 21);

contentPane.add(textField_4);

textField_4.addKeyListener(new CalcTotle());

}

class CalcTotle extends KeyAdapter {

@Override

public void keyReleased(KeyEvent e) {

// TODO Auto-generated method stub

int count1, count2, count3, count4, count5;

if (!textField.getText().isEmpty()) {

count1 = Integer.parseInt(textField.getText()) * 10;

} else {

count1 = 0;

}

if (!textField_1.getText().isEmpty()) {

count2 = Integer.parseInt(textField_1.getText()) * 20;

} else {

count2 = 0;

}

if (!textField_2.getText().isEmpty()) {

count3 = Integer.parseInt(textField_2.getText()) * 30;

} else {

count3 = 0;

}

if (!textField_3.getText().isEmpty()) {

count4 = Integer.parseInt(textField_3.getText()) * 40;

} else {

count4 = 0;

}

if (!textField_4.getText().isEmpty()) {

count5 = Integer.parseInt(textField_4.getText()) * 50;

} else {

count5 = 0;

}

final int totle = count1 + count2 + count3 + count4 + count5;

SwingUtilities.invokeLater(new Runnable() {

@Override

public void run() {

// TODO Auto-generated method stub

label_9.setText(totle + "");

}

});

}

Q3: java超市计价系统代码

package entity;

public class Market {

private int id;//id

private int num;//数量

private String goods;//商品

private double price;//价格

public Market(int id, int num, String goods, double price) {

super();

this.id = id;

this.num = num;

this.goods = goods;

this.price = price;

}

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public int getNum() {

return num;

}

public void setNum(int num) {

this.num = num;

}

public String getGoods() {

return goods;

}

public void setGoods(String goods) {

this.goods = goods;

}

public double getPrice() {

return price;

}

public void setPrice(double price) {

this.price = price;

}

public double calc( ){

double sum=price*num;

System.out.println("您消费共计："+sum+"￥");

return sum;

}

package test;

import java.util.HashMap;

import java.util.Map;

import java.util.Scanner;

import entity.Market;

public class Test {

private static MapInteger,Market goods=new HashMapInteger, Market();

public static void main(String[] args) {

System.out.println("-------超市计价系统-------");

String goods1="可口可乐";

String goods2="爆米花";

String goods3="益达";

printTable("编号","商品","价格");

printTable("1",goods1,"3.0￥");

printTable("2",goods2,"5.0￥");

printTable("3",goods3,"10.0￥");

goods.put(1, new Market(1, 1, goods1, 3.0));

goods.put(2, new Market(2, 1, goods2, 5.0));

goods.put(3, new Market(3, 1, goods3, 10.0));

Scanner input = new Scanner(System.in);

System.out.println("请输入商品的编号:");

int num = input.nextInt();

System.out.println("请输入商品的数量");

int amount = input.nextInt();

Market market = goods.get(num);

market.setNum(amount);

market.calc();

}

private static void printTable(String row1,String row2,String row3 ) {

System.out.print(row1);

int times=12;

if (row2!="商品") {

times=5;

}

for (int i = 0; i times; i++) {

System.out.print(" ");

}

System.out.print(row2);

for (int i = 0; i 10; i++) {

System.out.print(" ");

}

System.out.print(row3);

System.out.println("\n");

}

//测试结果：

-------超市计价系统-------

编号商品价格

1 可口可乐 3.0￥

2 爆米花 5.0￥

3 益达 10.0￥

请输入商品的编号:

请输入商品的数量

您消费共计：50.0￥

Q4: Java初学者，哪位友友能帮我设计一个简单的类似超市购物车的程序，参考一下~谢谢！

以前学习java又做个实例，挺值得学习的。

1.首先我先列出我们所需要的java类结构。

1）Database.java --------- 模拟存储商品的数据库。

2）McBean.java ------------ 商品实体类，一个普通的javabean，里面有商品的基本属性。

3）OrderItemBean.java --- 订单表。

4）ShoppingCar.java ------ 这个就是最主要的购物车，当然比较简单。

5）TestShoppingCar.java --- 这个是测试类。

2.下面贴出具体代码并带关键注释。

---Database.java

public class Database {

/*采用Map存储商品数据，为什么呢？我觉得这个问题你自己需要想下。

* Integer 为Map的key值，McBean为Map的value值。

private static MapInteger, McBean data = new HashMapInteger, McBean();

public Database() {

McBean bean = new McBean();

bean.setId(1);

bean.setName("地瓜");

bean.setPrice(2.0);

bean.setInstuction("新鲜的地瓜");

data.put(1, bean);//把商品放入Map

bean = new McBean();

bean.setId(2);

bean.setName("土豆");

bean.setPrice(1.2);

bean.setInstuction("又好又大的土豆");

data.put(2, bean);//把商品放入Map

bean = new McBean();

bean.setId(3);

bean.setName("丝瓜");

bean.setPrice(1.5);

bean.setInstuction("本地丝瓜");

data.put(3, bean);//把商品放入Map

}

public void setMcBean(McBean mcBean){

data.put(mcBean.getId(),mcBean);

}

public McBean getMcBean(int nid) {

return data.get(nid);

}

---McBean.java

public class McBean {

private int id;//商品编号

private String name;//商品名

private double price;//商品价格

private String instuction;//商品说明

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public double getPrice() {

return price;

}

public void setPrice(double price) {

this.price = price;

}

public String getInstuction() {

return instuction;

}

public void setInstuction(String instuction) {

this.instuction = instuction;

}

---ShoppingCar.java

public class ShoppingCar {

private double totalPrice; // 购物车所有商品总价格

private int totalCount; // 购物车所有商品数量

private MapInteger, OrderItemBean itemMap; // 商品编号与订单项的键值对

public ShoppingCar() {

itemMap = new HashMapInteger, OrderItemBean();

}

public void buy(int nid) {

OrderItemBean order = itemMap.get(nid);

McBean mb;

if (order == null) {

mb = new Database().getMcBean(nid);

order = new OrderItemBean(mb, 1);

itemMap.put(nid, order);

update(nid, 1);

} else {

order.setCount(order.getCount() + 1);

update(nid, 1);

}

public void delete(int nid) {

OrderItemBean delorder = itemMap.remove(nid);

totalCount = totalCount - delorder.getCount();

totalPrice = totalPrice - delorder.getThing().getPrice() * delorder.getCount();

}

public void update(int nid, int count) {

OrderItemBean updorder = itemMap.get(nid);

totalCount = totalCount + count;

totalPrice = totalPrice + updorder.getThing().getPrice() * count;

}

public void clear() {

itemMap.clear();

totalCount = 0;

totalPrice = 0.0;

}

public void show() {

DecimalFormat df = new DecimalFormat("¤#.##");

System.out.println("商品编号\t商品名称\t单价\t购买数量\t总价");

Set set = itemMap.keySet();

Iterator it = set.iterator();

while (it.hasNext()) {

OrderItemBean order = itemMap.get(it.next());

System.out.println(order.getThing().getId() + "\t"

+ order.getThing().getName() + "\t"

+ df.format(order.getThing().getPrice()) + "\t" + order.getCount()

+ "\t" + df.format(order.getCount() * order.getThing().getPrice()));

}

System.out.println("合计: 总数量: " + df.format(totalCount) + " 总价格: " + df.format(totalPrice));

System.out.println("**********************************************");

}

---OrderItemBean.java

public class OrderItemBean {

private McBean thing;//商品的实体

private int count;//商品的数量

public OrderItemBean(McBean thing, int count) {

super();

this.thing = thing;

this.count = count;

}

public McBean getThing() {

return thing;

}

public void setThing(McBean thing) {

this.thing = thing;

}

public int getCount() {

return count;

}

public void setCount(int count) {

this.count = count;

}

---TestShoppingCar.java

package com.shop;

public class TestShoppingCar {

public static void main(String[] args) {

ShoppingCar s = new ShoppingCar();

s.buy(1);//购买商品编号1的商品

s.buy(1);

s.buy(2);

s.buy(3);

s.buy(1);

s.show();//显示购物车的信息

s.delete(1);//删除商品编号为1的商品

s.show();

s.clear();

s.show();

}

3.打印输出结果

商品编号商品名称单价购买数量总价

1 地瓜￥2 3 ￥6

2 土豆￥1.2 1 ￥1.2

3 丝瓜￥1.5 1 ￥1.5

合计: 总数量: ￥5 总价格: ￥8.7

**********************************************

商品编号商品名称单价购买数量总价

2 土豆￥1.2 1 ￥1.2

3 丝瓜￥1.5 1 ￥1.5

合计: 总数量: ￥2 总价格: ￥2.7

**********************************************

商品编号商品名称单价购买数量总价

合计: 总数量: ￥0 总价格: ￥0

**********************************************

4.打字太累了，比较匆忙，但是主要靠你自己领会。哪里不清楚再提出来。

Q5: 用java编程实现网上超市购物结算功能代码

哎，我还是自己代码黏贴给你吧！免得总通不过！装不下这么多字，详情自己找我。连接数据库类（添加修改会员信息） package com.to.java; import java.util.Scanner; import java.sql.*; public class Vds { Scanner Input=new Scanner(System.in); ZhuCK1 zhuck1=new ZhuCK1(); public void x(){ try{ Connection con=null; Statement stmt=null; ResultSet rs=null; Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); String ur1="jdbc:odbc:gg"; con=DriverManager.getConnection(ur1); stmt=con.createStatement(); String sqlstmt="select id,mm from gg"; rs=stmt.executeQuery(sqlstmt); System.out.println("----------查询结果---------"); System.out.println(); System.out.println("会员号--密码"); while(rs.next()){ String id=rs.getString("id"); String mm=rs.getString("mm"); System.out.println(id+" "+mm); } con.close(); stmt.close(); }catch(Exception e){ System.out.println(e);} System.out.println("是否返回上级菜单"); System.out.println("1.是"); System.out.println("2.否"); int m=Input.nextInt(); switch(m){ case 1: zhuck1.ZhucK1(); break; case 2: { System.out.println("欢迎下次再次使用");System.exit(-1);}; break; }} public void j(){ try{ Connection con=null; Statement stmt=null; ResultSet rs=null; Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); String ur1="jdbc:odbc:gg"; con=DriverManager.getConnection(ur1); stmt=con.createStatement(); String sqlstmt="select id,mm from gg"; rs=stmt.executeQuery(sqlstmt); while(rs.next()){ String id=rs.getString("id"); String mm=rs.getString("mm"); System.out.println(id+" "+mm); } Scanner input=new Scanner(System.in); System.out.println("请输入会员信息："); System.out.println("请输入会员号："); String f=input.next(); System.out.println("请输入密码："); String q=input.next(); String sqlst="insert into gg values('"+f+"','"+q+"')"; Statement tatement=con.createStatement(); int result=tatement.executeUpdate(sqlst); System.out.println("操作成功！"); con.close(); stmt.close(); }catch(Exception e){ System.out.println(e); } System.out.println("是否返回上级菜单"); System.out.println("1.是"); System.out.println("2.否"); int m=Input.nextInt(); switch(m){ case 1: zhuck1.ZhucK1(); break; case 2: { System.out.println("欢迎下次再次使用");System.exit(-1);}; break; } } public void xg(){ try{ Connection con=null; Statement stmt=null; ResultSet rs=null; Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); String ur1="jdbc:odbc:gg"; con=DriverManager.getConnection(ur1); stmt=con.createStatement(); String sqlstmt="select id,mm from gg"; rs=stmt.executeQuery(sqlstmt); while(rs.next()){ String id=rs.getString("id"); String mm=rs.getString("mm"); System.out.println(id+" "+mm); } Scanner input=new Scanner(System.in); System.out.println("请输入会员信息："); System.out.println("请输入要修改的会员号："); String f=input.next(); System.out.println("请输入修改的密码："); String q=input.next(); String sqlst="update gg set mm='"+q+"' where id='"+f+"'"; Statement tatement=con.createStatement(); int result=tatement.executeUpdate(sqlst); System.out.println("操作成功！"); con.close(); stmt.close(); }catch(Exception e){ System.out.println(e); } System.out.println("是否返回上级菜单"); System.out.println("1.是"); System.out.println("2.否"); int m=Input.nextInt(); switch(m){ case 1: zhuck1.ZhucK1(); break; case 2: { System.out.println("欢迎下次再次使用");System.exit(-1);}; break; } } } package com.to.java; import java.util.Scanner; public class KeHu { Vds sj=new Vds(); public void kehu1(){ Scanner Input=new Scanner(System.in); ZhuCK1 zhuck1=new ZhuCK1(); System.out.println("******************************************************"+"\n\n"); System.out.println("1.显示所有客户信息"); System.out.println("2.添加客户信息"); System.out.println("3.修改客户信息"); System.out.println("4.查询客户信息"); System.out.println("5.返回上级菜单"); System.out.println("******************************************************"+"\n\n"); System.out.println("请输入数字："); int a=Input.nextInt(); switch(a){ case 1: sj.x(); break; case 2: sj.j(); break; case 3: sj.xg(); break; case 4: sj.x();break; case 5: zhuck1.ZhucK1();break; } } } package com.to.java; public class GouWuXiTong { public static void main(String[] args){ ZhuCK zhuck=new ZhuCK(); zhuck.ZhucK(); } } package com.to.java; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; import java.util.Scanner; public class ZhuCK { Scanner Input=new Scanner(System.in); public void ZhucK(){ ZhuCK1 zhuck1=new ZhuCK1(); System.out.println("\t\t"+"欢迎使用我心我素购物系统"); System.out.println("******************************************************"+"\n\n"); System.out.println("\t\t"+"1.登陆系统"); System.out.println(); System.out.println("\t\t"+"2.退出"+"\n\n"); System.out.println("******************************************************"); int d=1; while(d!=2){ System.out.println("请输入会员号："); String p=Input.next(); System.out.println("请输入密码："); String f=Input.next(); try{ Connection con=null; Statement stmt=null; ResultSet rs=null; Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); String ur1="jdbc:odbc:gg"; con=DriverManager.getConnection(ur1); stmt=con.createStatement(); String sqlstmt="select * from gg"; rs=stmt.executeQuery(sqlstmt); while(rs.next()){ String id=rs.getString("id"); String mm=rs.getString("mm"); if(id.equals(p)mm.equals(f)){ { System.out.println("请输入数字："); int a=Input.nextInt(); switch(a){ case 1: zhuck1.ZhucK1(); break; case 2: break; }d=2; } } } }catch(Exception e){ System.out.println(e);} {System.out.println("输入错误请再次输入：");d=1;} } }} }