求编程高手帮我写一个JAVA程序

答案：package ddd;

public class Dish {
private String name;
private String id;
private double unit;
private int number;
private String text;
public Dish(String id,String name,double unit,int number){
 this.id=id;
 this.name=name;
 this.unit=unit;
    this.number=number;
}
public Dish(){
 
}
public String getName() {
 return name;
}
public void setName(String name) {
 this.name = name;
}
public String getId() {
 return id;
}
public void setId(String id) {
 this.id = id;
}
public double getUnit() {
 return unit;
}
public void setUnit(double unit) {
 this.unit = unit;
}

public int getNumber() {
 return number;
}
public void setNumber(int number) {
 this.number = number;
}
public String getText() {
 return text;
}
public void setText(String text) {
 this.text = text;
}
public Dish clone(){
 Dish d=new Dish();
 d.setId(id);
 d.setName(name);
 d.setUnit(unit);
 d.setNumber(number);
 return d;
}
}
-----------------------------------------
package ddd;

import java.sql.Date;
import java.text.SimpleDateFormat;
import java.util.LinkedList;
import java.util.List;

public class Order {
 
 private String user;
public List<Dish> list;
private double sumMoney;
private String date;
public Order(String user){
 this.user=user;
 SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
 Date date=new Date(System.currentTimeMillis());
 this.date=format.format(date);
 list=new LinkedList<Dish>();
}
public List<Dish> getList() {
 return list;
}
public void setList(List<Dish> list) {
 this.list = list;
}
public double getSumMoney() {
 return sumMoney;
}
public void setSumMoney(double sumMoney) {
 this.sumMoney = sumMoney;
}
public String getDate() {
 return date;
}
public void setDate(String date) {
 this.date = date;
}
public String getUser() {
 return user;
}
public void setUser(String user) {
 this.user = user;
}
 public void printOrder(){
  System.out.println("--------------------------------------------------------------");
  System.out.println("+用户名:"+user+"+");
  System.out.println("+消费日期:"+date+"+");
  System.out.println("--------------------------------------------------------------");
  System.out.println("编号      \t      名称      \t 价格(元) \t数量     \t 合计(元)");
  for(Dish dish:list){
      System.out.printf("%-5s \t  %-12s  \t %-5s \t        %-2s    \t    %-5s\n",dish.getId(),dish.getName(),dish.getUnit(),dish.getNumber(),dish.getUnit()*dish.getNumber());
  }
  System.out.println("--------------------------------------------------------------");
  System.out.println("+消费合计:"+sumMoney+"+");
 }
}
--------------------------------------------
package ddd;

import java.io.IOException;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {
private Map<String,Dish> map;
private Order order;
public Main(String username){
 map=new LinkedHashMap<String,Dish>();
 map.put("01",new Dish("01","扬州炒饭",5.0,10));
 map.put("02",new Dish("02","辣子鸡丁",9.0,10));
 map.put("03",new Dish("03","羊肉串 ",5.0,10));
 map.put("04",new Dish("04","鸡汤 ",15.0,10));
 map.put("05",new Dish("05","红烧排骨",25.0,10));
 map.put("06",new Dish("06","清蒸鲤鱼 ",35.0,10));
 map.put("07",new Dish("07","杂酱面 ",8.0,10));
 map.put("08",new Dish("08","绿豆粥 ",2.0,10));
 
 order=new Order(username);

}
public void printDishList(){
 System.out.println("-------------------菜    谱-------------------");
 System.out.println("编号      \t      名称      \t 价格(元) \t数量");
 System.out.println("--------------------------------------------");
 for(Dish dish:map.values()){
  System.out.printf("%-5s \t  %-12s  \t %-5s \t        %-2s\n",dish.getId(),dish.getName(),dish.getUnit(),dish.getNumber());
 }
 System.out.println("--------------------------------------------");
}
public static void main(String[] str) throws IOException{
 Main main=new Main("佚名");
 Scanner s=new Scanner(System.in);
 main.printDishList();
 while(true){
  String id="";
  
  System.out.print("请输入菜单编号：");
  id=s.nextLine();
  
  if(!main.map.containsKey(id)) {System.out.println("没有该菜名编号！");continue;}
  Dish dish=main.map.get(id).clone();
  System.out.println(dish.getName());
  System.out.print("请输入所要菜名【"+dish.getName()+"】的数量(0表示全部都要;必须小于等于"+dish.getNumber()+")：");
  int number=Integer.parseInt(s.nextLine());
  if(number<0 || number>dish.getNumber()){System.out.println("数量输入错误！");continue;}
  else if(number==0) ;
  else dish.setNumber(number);
  main.order.setSumMoney(main.order.getSumMoney()+dish.getNumber()*dish.getUnit());
  main.order.list.add(dish);
  System.out.println("一种菜品添加成功！继续直接any key；结束输入exit并回车");
  String tag=s.nextLine();
  if("exit".equalsIgnoreCase(tag)) break;
  
 }
 main.order.printOrder();
}
}

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