Java手机进货出货代码 用java编写手机类代码

求一个简易自动售货机的代码(java)要用创建类封装性,输出的时候要有提示语句,代码类似以下图片

//Example类文件Example.java

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package cn.zhouhan;

import java.util.Scanner;

public class Example {

static Drink cola, fanta, blacktea, greentea;

static int money;

public static void main(String[] args) {

// TODO Auto-generated method stub

cola = new Drink("可乐", 50, 2.0, 1);

fanta = new Drink("芬达", 40, 3.0, 2);

blacktea = new Drink("红茶", 30, 4.0, 3);

greentea = new Drink("绿茶", 20, 5.0, 4);

money = 500;

for(;;)

{

System.out.println("-------------自动售货机-------------");

cola.UserPrintDrinkInfo();

fanta.UserPrintDrinkInfo();

blacktea.UserPrintDrinkInfo();

greentea.UserPrintDrinkInfo();

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

System.out.println("1.购买饮料");

System.out.println("2.管理员查询");

System.out.println("3.返回");

System.out.println("请输入要执行的操作序号:");

Scanner scannerIndex = new Scanner(System.in);

int indexScanner = scannerIndex.nextInt();

switch(indexScanner)

{

case 1:

System.out.println("请选择购买的饮料(1.可乐,2.芬达,3红茶,4.绿茶):");

Scanner numberScanner = new Scanner(System.in);

int buyIndex = numberScanner.nextInt();

Drink drink = getDrink(buyIndex);

System.out.println("请输入购买的数量:");

Scanner countScanner = new Scanner(System.in);

int buyCount = countScanner.nextInt();

if (buyCount  0)

{

System.out.println("您选择了" + buyCount + "瓶" + drink.getName() + "." );

System.out.println("总价格:" + drink.getPrice() * buyCount + "元,请投入1元或5元纸币。");

System.out.println("确定购买?(1.确定,2.退款):");

Scanner sureScanner = new Scanner(System.in);

int sure = sureScanner.nextInt();

if (sure == 1)

{

drink.sellDrink(buyCount);

money += drink.getPrice() * buyCount;

System.out.println("您购买了" + buyCount + "瓶" + drink.getName() + ",交易成功." );

}

if (sure ==2 )

{

System.out.println("退款成功!");

}

}

else

System.out.println("输入的数量有误!");

break;

case 2:

System.out.println("请输入管理员密码:");

Scanner pwScanner = new Scanner(System.in);

int password = pwScanner.nextInt();

if (password == 123)

{

System.out.println("密码正确,目前的余额为:" + money + "元。");

}

else

System.out.println("密码错误。");

break;

case 3:

break;

default:

System.out.println("请输入正确的数字。");

break;

}

}

}

public static Drink getDrink(int drinkIndex)

{

Drink drink = null;

switch(drinkIndex)

{

case 1:

drink = cola;

System.out.println("您选择了可乐。");

break;

case 2:

drink = fanta;

System.out.println("您选择了芬达。"); 

break;

case 3:

drink = blacktea;

System.out.println("您选择了红茶。");

break;

case 4:

drink = greentea;

System.out.println("您选择了绿茶。");

break;

default:

//drink = null;

System.out.println("输入错误,请输入1~4的数字!");

}

return drink;

}

}

//创建的Drink类文件Drink.java

package cn.zhouhan;

public class Drink {

private String name;

private int number;

private double price;

private double drinkMoney;

private int index;

public Drink(String name, int number, double price, int index)

{

this.name = name;

this.number = number;

this.price = price;

this.drinkMoney = number * price;

this.index = index;

}

public String getName()

{

return this.name;

}

public int getNumber()

{

return this.number;

}

public double getPrice()

{

return this.price;

}

public void sellDrink(int count)

{

this.number -= count;

this.drinkMoney += this.price * count;

}

public void UserPrintDrinkInfo()

{

System.out.println("品名:"+ this.name +",单价:" + this.price + "元,剩余数量:" + this.number + "瓶。");

}

}

java编程,求实际代码

商品最好存储在数据库中, 商业应用哪有存在文件里的, 也就是学校练习使用文件存储。

这是一段增删改查的代码, 将里面的MSC类修改成商品类就行了.(既然学过java, 你应该会修改吧)

数据库使用mysql(小型) 或sql server(大型) 均可:建议使用mysql即可

代码:

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

class MSC

{

public String MscID;

public String MscName;

public String MscCompany;

public float MscLongitude;

public float MscLatitude;

public float MscAltitude;

public MSC(String MscID, String MscName, String MscCompany,

float MscLongitude, float MscLatitude,float MscAltitude){

this.MscID = MscID;

this.MscName = MscName;

this.MscCompany = MscCompany;

this.MscLongitude =MscLongitude;

this.MscLatitude = MscLatitude;

this.MscAltitude = MscAltitude;

}

}

public class sqlserverjdbc {

public Connection getConnection(){

String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; //加载JDBC驱动

String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=gsm"; //连接服务器和数据库sample

String userName = "sa"; //默认用户名

String userPwd = "123"; //密码

Connection dbConn = null;

try {

Class.forName(driverName);

dbConn =DriverManager.getConnection(dbURL, userName, userPwd);

} catch (Exception e) {

e.printStackTrace();

}

return dbConn;

}

public void printUserInfo(){

Connection con = getConnection();

Statement sta = null;

ResultSet rs = null;

System.out.println("打印表格MSC信息");

try {

sta = con.createStatement();

rs = sta.executeQuery("select * from MSC信息");

System.out.println("MscID\tMscName\tMscCompany\tMscLongitude\tMscLatitude\tMscAltitude");

while(rs.next()){

System.out.println(rs.getString("MscID")+"\t"+

rs.getString("MscName")+"\t"+

rs.getString("MscCompany")+"\t"+

rs.getFloat("MscLongitude")+"\t"+

rs.getFloat("MscLatitude")+"\t"+

rs.getFloat("MscAltitude"));

}

con.close();

sta.close();

rs.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println("打印完成\n");

}

public void delete(String MscID){

Connection con = getConnection();

String sql = "delete from MSC信息 where MscID = " + MscID;

PreparedStatement pst;

System.out.println("删除表格MSC信息中 ID = "+MscID+"的记录");

try {

pst = con.prepareStatement(sql);

pst.execute();

pst.close();

con.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

System.out.println("记录删除失败!!!");

}

System.out.println("记录删除成功!!!\n");

}

public void insert(MSC msc){

Connection con = getConnection();

String sql = "insert into MSC信息 values(?,?,?,?,?,?)";

PreparedStatement pst;

System.out.println("插入一条记录");

try {

pst = con.prepareStatement(sql);

pst.setString(1, msc.MscID);

pst.setString(2, msc.MscName);

pst.setString(3, msc.MscCompany);

pst.setFloat(4, msc.MscLongitude);

pst.setFloat(5, msc.MscLatitude);

pst.setFloat(6, msc.MscAltitude);

pst.execute();

pst.close();

con.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

System.out.println("插入失败!!!");

}

System.out.println("插入成功!!!\n");

}

//更新MscID的MscName

public void updateMscName(String MscID, String MscName){

Connection con = getConnection();

String sql = "update MSC信息 set MscName = ? where MscID = ?";

PreparedStatement pst;

System.out.println("修改一条记录");

try {

pst = con.prepareStatement(sql);

pst.setString(1, MscName);

pst.setString(2, MscID);

pst.execute();

pst.close();

con.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

System.out.println("修改失败!!!");

}

System.out.println("修改成功!!!\n");

}

public static void main(String args[]){

sqlserverjdbc sql = new sqlserverjdbc();

sql.printUserInfo();

sql.delete("1111");

sql.printUserInfo();

sql.updateMscName("5215", "联想");

sql.printUserInfo();

sql.insert(new MSC("1111", "中兴" ," 中兴", (float)12.2, (float)3.4,(float)45.5));

sql.printUserInfo();

}

}

java 商品 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:

3

请输入商品的数量

5

您消费共计:50.0¥

java自动生成进货编码

import java.text.SimpleDateFormat;

import java.util.Date;

/**

* 自动生产编号

* @author

*chengeng

*/

public class AutoNum {

/**

*

* 在用此类时,必须先明确自己模块编号的开头

* @param start编号开头,

* @param num从数据库查询出的最大编号

* @return

*/

public String getNum(String start,String num){

String n=num.substring(0,3);

if(!n.equals(start)){

System.out.println("编号的开头与从数据库取得的编号开头不相同");

return "";

}

String strDate="";//流水号时间

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

Date date = new Date();

//格式化当前时间,并按字符'-'分割

String[] sd=sdf.format(date).split("-");

//截取编号中的日期

String time=num.substring(3,11).toString();

for(int i=0;isd.length;i++){

strDate+=sd[i];

}

//如果当天或者表中没有记录,返回当天第一条记录

if(!time.equals(strDate)||num.equals("")){

return start+strDate+"0001";

}

// 截取编号最后的流水号

String end=num.substring(11, 15);

String s2="";

int lg=Integer.parseInt(end);

//对流水号结尾的四位数字进行判断,以便增加

if(lg0lg9){

s2="000"+(lg+1);

}else if(lg=9lg99){

s2="00"+(lg+1);

}else if(lg=99lg999){

s2="0"+(lg+1);

}else if(lg=999lg9999){

s2=""+(lg+1);

}

//返回自动生成后的流水号

return start+=strDate+s2;

}

}

用JAVA代码实现

就是让人输入一些数字,然后让程序输出最小的数是哪个对吗?是的话回复一下,我追答给你


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