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java无人超市代码 无人超市app
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用java语言写个超市管理系统的程序
package c;
import java.util.Scanner;
public class SuperMarket {
static Scanner scan = new Scanner(System.in);
public static String str;
public static void main(String[] args) {
showMsg();
while (scan.hasNext()) {
switch (scan.nextInt()) {
case 1:
commodityManage();
break;
case 2:
customerManage();
break;
case 3:
orderManage();
break;
case 4:
exitSystem();
break;
default:
System.out.println("输入错误java无人超市代码，请重新输入！");
break;
}
}
scan.close();
}
/**
* 显示信息
*/
public static void showMsg() {
System.out.println("===================================");
System.out.println("\t超 市 库 存 管 理 系 统\t");
System.out.println("===================================");
System.out.println("1、商品管理");
System.out.println("2、客户管理");
System.out.println("3、订单管理");
System.out.println("4、退出系统");
System.out.println("===================================");
System.out.println("请输入您java无人超市代码的选择（1－4）：");
}
/**
* 选项 1、商品管理
*/
public static void commodityManage() {
str = "商品管理";
showWelcom(str);
System.out.println("以上为商品管理的信息！\n是否继续java无人超市代码？（按1继续/其java无人超市代码他结束）：");
exitOrShow(1);
}
/**
* 选项 2、客户管理
*/
public static void customerManage() {
str = "客户管理";
System.out.println("以上为客户管理的信息！\n是否继续java无人超市代码？（按2继续/其他结束）：");
exitOrShow(2);
}
/**
* 选项 3、订单管理
*/
public static void orderManage() {
str = "订单管理";
System.out.println("以上为订单管理的信息！\n是否继续？（按3继续/其他结束）：");
exitOrShow(3);
}
/**
* 选项 4、退出系统
*/
public static void exitSystem() {
System.exit(0);
}
public static void showWelcom(String str) {
System.out.println("欢迎进入"+ str +"模块");
System.out.println("===================================");
}
public static void exitOrShow(int nextInt) {
if (scan.nextInt() != nextInt) {
exitSystem();
} else {
showMsg();
}
}
}
相关问答
Q1: 购物车的Java代码
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;public class ShoppingCartManager {
HashMapString, String hm=new HashMapString, String();
float totlePrice=0;
//添加book到购物车
public void addBook(String bookId,String bookQuantity){
if(hm.containsKey(bookId)){
int value=Integer.parseInt(hm.get(bookId));
value+=Integer.parseInt(bookQuantity);
hm.put(bookId, value+"");
}else{
hm.put(bookId, bookQuantity);
}
}
//修改数量
public void updateQuantity(String bookId,String bookQuantity){
hm.put(bookId, bookQuantity);
}
//获取购物车的所有信息 并计算总价
public ArrayListBookBean getShoppingCart(){
ArrayListBookBean al=new ArrayListBookBean();
IteratorString i=hm.keySet().iterator();
String ids="";
BookTableManager btm=new BookTableManager();
while(i.hasNext()){
ids=ids+","+i.next();
}
al= btm.selectByBookIds(ids);
totlePrice=0; //清空总价，防止无限累计
for(int j=0;jal.size();j++){
BookBean bb=al.get(j);
totlePrice+=bb.getPrice()*Integer.parseInt(getQuantityById(bb.getBookId()+""));
}
return al;
}
//获取总价
public float getTotlePrice(){
return totlePrice;
}
//根据ID获取数量
public String getQuantityById(String id){
String quantity=hm.get(id);
return quantity;
}
//清空购物车
public void clear(){
hm.clear();
}
//删除购物车中的一本书
public void deleteById(String id){
hm.remove(id);
}
}
Q2: 数据库如何用java写超市购物程序？
要使用Java编写超市购物程序，您需要使用Java数据库编程技术来连接到您的数据库并执行相关的数据库操作。在Java中，您可以使用JDBC（Java数据库连接）API来连接到数据库并执行SQL语句。例如，您可以使用JDBC API来执行以下操作：
创建数据库连接
执行增删改查（CRUD）操作
提交或回滚事务
执行存储过程和函数
查询数据库元数据
此外，您还可以使用Java的面向对象编程技术来封装数据库操作，以便更方便地在您的程序中使用。例如，您可以创建一个类来表示超市商品，并定义一些方法来执行商品的增删改查操作。这样，您就可以在程序中通过调用这些方法来简单地完成对数据库的操作，而不需要编写复杂的SQL语句。
Q3: 亲有java语言写的超市管理系统课程设计和源代码吗，能给我吗
package untitled5;
import java.io.*;
import java.net.*;
import java.sql.*;
import java.lang.*;
import javax.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
public class delbook extends JFrame {
JPanel contentPane;
XYLayout xYLayout1 = new XYLayout();
JLabel jLabel1 = new JLabel();
JLabel jLabel2 = new JLabel();
JLabel jLabel3 = new JLabel();
JTextField jTextField1 = new JTextField();
JLabel jLabel4 = new JLabel();
JTextField jTextField2 = new JTextField();
JLabel jLabel5 = new JLabel();
JTextField jTextField3 = new JTextField();
JLabel jLabel6 = new JLabel();
JTextField jTextField4 = new JTextField();
JButton jButton1 = new JButton();
//Construct the frame
public delbook() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}
//Component initialization
private void jbInit() throws Exception {
contentPane = (JPanel) this.getContentPane();
jLabel1.setFont(new java.awt.Font("SansSerif", 0, 25));
jLabel1.setForeground(Color.red);
jLabel1.setText("超市管理系统");
contentPane.setLayout(xYLayout1);
this.setSize(new Dimension(500,400));
this.setTitle("超市管理系统");
jLabel2.setFont(new java.awt.Font("SansSerif", 0, 30));
jLabel2.setText("业务单位信息");
jLabel3.setFont(new java.awt.Font("SansSerif", 0, 25));
jLabel3.setText("产品编号");
jTextField1.setText("");
jLabel4.setFont(new java.awt.Font("SansSerif", 0, 25));
jLabel4.setText("公司名称");
jTextField2.setText("");
jLabel5.setFont(new java.awt.Font("SansSerif", 0, 25));
jLabel5.setText("订单号码");
jTextField3.setText("");
jLabel6.setFont(new java.awt.Font("SansSerif", 0, 25));
jLabel6.setText("电 话");
jTextField4.setText("");
jButton1.setFont(new java.awt.Font("SansSerif", 0, 25));
jButton1.setText("提交");
jButton1.addActionListener(new delbook_jButton1_actionAdapter(this));
contentPane.add(jLabel1, new XYConstraints(179, 1, 153, 32));
contentPane.add(jLabel2, new XYConstraints(162, 33, -1, -1));
contentPane.add(jLabel3, new XYConstraints(83, 89, -1, -1));
contentPane.add(jTextField1, new XYConstraints(189, 88, 141, 36));
contentPane.add(jTextField2, new XYConstraints(189, 149, 142, 36));
contentPane.add(jLabel4, new XYConstraints(84, 148, -1, -1));
contentPane.add(jTextField3, new XYConstraints(188, 206, 143, 33));
contentPane.add(jLabel5, new XYConstraints(84, 204, -1, -1));
contentPane.add(jLabel6, new XYConstraints(84, 253, -1, -1));
contentPane.add(jTextField4, new XYConstraints(189, 260, 143, 36));
contentPane.add(jButton1, new XYConstraints(197, 318, -1, -1));
}
//Overridden so we can exit when window is closed
protected void processWindowEvent(WindowEvent e) {
super.processWindowEvent(e);
if (e.getID() == WindowEvent.WINDOW_CLOSING) {
System.exit(0);
}
}
void update() {
try {
//定义显示java无人超市代码的字符串
String str1;
String str2;
String str3;
String str4;
str1 = jTextField1.getText();
str2 = jTextField2.getText();
str3 = jTextField3.getText();
str4 = jTextField4.getText();
//装载jdbc驱动程序
String driverName = "oracle.jdbc.OracleDriver";
Driver driver = (Driver) Class.forName(driverName).newInstance();
//连接数据库
Connection con = DriverManager.getConnection(
"jdbc:oracle:thin:@thsspc0791:1521:liuyong", "hr", "tongfang");
PreparedStatement pstmt = con.prepareStatement(
" insert Customer1('goodID','Name','PID','tel')values(?,?,?,?)");
pstmt.setString(1, str1);
pstmt.setString(2, str2);
pstmt.setString(1, str3);
pstmt.setString(4, str4);
ResultSet res = pstmt.executeQuery();
pstmt.close();
con.close();
}catch (InstantiationException e) {
System.out.println(e.getMessage());
}catch (IllegalAccessException e) {
System.out.println(e.getMessage());
}catch (ClassNotFoundException e) {
System.out.println(e.getMessage());
}catch (SQLException edd) {
edd.printStackTrace() ;
System.out.println(edd.getMessage());
}
}
void jButton1_actionPerformed(ActionEvent e) {
update();
}
}
class delbook_jButton1_actionAdapter implements java.awt.event.ActionListener {
delbook adaptee;
delbook_jButton1_actionAdapter(delbook adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.jButton1_actionPerformed(e);
}
}
package untitled5;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
/**
* pTitle: /p
* pDescription: /p
* pCopyright: Copyright © 2003/p
* pCompany: /p
* @author not attributable
* @version 1.0
*/
public class retur extends JFrame {
JPanel contentPane;
XYLayout xYLayout1 = new XYLayout();
JLabel jLabel1 = new JLabel();
//Construct the frame
public retur() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}
//Component initialization
private void jbInit() throws Exception {
contentPane = (JPanel) this.getContentPane();
jLabel1.setFont(new java.awt.Font("SansSerif", 0, 20));
jLabel1.setForeground(Color.red);
jLabel1.setText("超市管理系统");
contentPane.setLayout(xYLayout1);
this.setSize(new Dimension(400, 300));
this.setTitle("超市管理系统");
contentPane.add(jLabel1, new XYConstraints(139, 1, 126, 33));
}
//Overridden so we can exit when window is closed
protected void processWindowEvent(WindowEvent e) {
super.processWindowEvent(e);
if (e.getID() == WindowEvent.WINDOW_CLOSING) {
System.exit(0);
}
}
}
package untitled5;
import java.io.*;
import java.net.*;
import java.sql.*;
import java.lang.*;
import javax.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import com.borland.dbswing.*;
//货品信息登记
public class Frame2 extends JFrame {
JPanel contentPane;
JLabel jLabel1 = new JLabel();
XYLayout xYLayout1 = new XYLayout();
JLabel jLabel2 = new JLabel();
JLabel jLabel3 = new JLabel();
JTextField jTextField1 = new JTextField();
JLabel jLabel4 = new JLabel();
JTextField jTextField2 = new JTextField();
JPanel jPanel1 = new JPanel();
XYLayout xYLayout2 = new XYLayout();
JScrollPane jScrollPane1 = new JScrollPane();
JLabel jLabel5 = new JLabel();
JTextField jTextField3 = new JTextField();
//Construct the frame
public Frame2() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}
//Component initialization
private void jbInit() throws Exception {
contentPane = (JPanel) this.getContentPane();
contentPane.setLayout(xYLayout1);
this.setSize(new Dimension(600, 500));
this.setTitle("超市管理系统");
this.addHierarchyBoundsListener(new Frame2_this_hierarchyBoundsAdapter(this));
jLabel1.setFont(new java.awt.Font("SansSerif", 0, 25));
jLabel1.setForeground(Color.red);
jLabel1.setText("超市管理系统");
contentPane.setForeground(Color.black);
jLabel2.setFont(new java.awt.Font("SansSerif", 0, 30));
jLabel2.setText("产 品 信 息 展 示");
// statusBar.setFont(new java.awt.Font("SansSerif", 0, 20));
jLabel3.setFont(new java.awt.Font("SansSerif", 0, 20));
jLabel3.setText("产品名称");
jTextField1.setText("");
jLabel4.setEnabled(true);
jLabel4.setFont(new java.awt.Font("SansSerif", 0, 20));
jLabel4.setText("产品ID号");
jTextField2.setText("");
jTextField2.addActionListener(new Frame2_jTextField2_actionAdapter(this));
jPanel1.setLayout(xYLayout2);
jLabel5.setFont(new java.awt.Font("SansSerif", 0, 25));
jLabel5.setForeground(Color.red);
jLabel5.setText("该产品详细信息");
jTextField3.setText("");
contentPane.add(jLabel1, new XYConstraints(237, 0, 153, 40));
contentPane.add(jLabel2, new XYConstraints(200, 47, 231, 58));
contentPane.add(jLabel3, new XYConstraints(47, 102, 101, 42));
contentPane.add(jTextField1, new XYConstraints(128, 108, 112, 34));
contentPane.add(jTextField2, new XYConstraints(361, 107, 109, 36));
contentPane.add(jPanel1, new XYConstraints(75, 166, 453, 277));
jPanel1.add(jScrollPane1, new XYConstraints(14, 8, 433, 221));
jScrollPane1.getViewport().add(jTextField3, null);
jPanel1.add(jLabel5, new XYConstraints(112, 240, -1, -1));
contentPane.add(jLabel4, new XYConstraints(278, 111, -1, -1));
}
//Overridden so we can exit when window is closed
protected void processWindowEvent(WindowEvent e) {
super.processWindowEvent(e);
if (e.getID() == WindowEvent.WINDOW_CLOSING) {
System.exit(0);
}
}
void Select() {
try {
String str1, str2;
str1 = jTextField1.getText();
str2 = jTextField2.getText();
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