java实现KFC点餐小程序

package kfc点餐系统;

//food 类

public class kfcfood {

  private string fname ;

  private int fnumb= 1 ;

  private float fprice;

  public kfcfood() {

  super ();

  }

  public kfcfood(string fname, int fnumb, float fprice) {

  super ();

  this .fname = fname;

  this .fnumb = fnumb;

  this .fprice = fprice;

  }

  public string getfname() {

  return fname;

  }

  public void setfname(string fname) {

  this .fname = fname;

  }

  public int getfnumb() {

  return fnumb;

  }

  public void setfnumb( int fnumb) {

  this .fnumb = fnumb;

  }

  public float getfprice() {

  return fprice*fnumb;

  }

  public void setfprice( float fprice) {

  this .fprice = fprice;

  }

  @override

  public string tostring() {

  return fname + " 价格 [" + fprice + "]" ;

  }

}

package kfc点餐系统;

/*

  * 1.正常餐品结算和找零。

2.基本套餐结算和找零。

3.使用优惠劵购买餐品结算和找零。

4.可在一定时间段参与店内活动（自行设计或参考官网信息）。

5.模拟打印小票的功能（写到文件中）。

  * */

/*@author:kxd

  * @date:2018.10.25

  *

  * 本人写这个小程序，第一创建kfcfood类属性有foodname foodprice foodnumb 和一些必要函数 这个类负责封装食物属性

  * demo1 是主程序 核心 是hashmap 集合，hashmap<kfcfood , string > 做购物车 添加食物 和遍历打印小票

  * 用字符输出流 很简洁的写法写入文本

  * bufferedwriter bw = new bufferedwriter(new outputstreamwriter(new fileoutputstream("out.txt",true)));//字符缓冲输出流

  *

  * */

import java.io.bufferedwriter;

import java.io.filenotfoundexception;

import java.io.fileoutputstream;

import java.io.ioexception;

import java.io.outputstreamwriter;

import java.util.date;

import java.util.hashmap;

import java.util.scanner;

import java.util.set;

public class demo1 {

  public static void main(string[] args) throws ioexception {

  kfcfood k1= new kfcfood( "全家桶" , 1 ,( float )( 79.9 ));

  kfcfood k2= new kfcfood( "奥尔良鸡腿堡" , 1 ,( float )( 19.9 ));

  kfcfood k3= new kfcfood( "热辣鸡腿堡" , 1 ,( float )( 18.9 ));

  kfcfood k4= new kfcfood( "帕尼尼早餐套餐" , 1 ,( float )( 29.9 ));

  kfcfood k5= new kfcfood( "可乐" , 1 ,( float )( 9.9 ));

  kfcfood k6= new kfcfood( "鸡米花" , 1 ,( float )( 9.9 ));

  kfcfood k7= new kfcfood( "薯条" , 1 ,( float )( 8.8 ));

  kfcfood k8= new kfcfood( "热辣鸡翅" , 1 ,( float )( 11.9 ));

  kfcfood k9= new kfcfood( "冰淇淋" , 1 ,( float )( 9.9 ));

  hashmap<kfcfood , string > hm= new hashmap<kfcfood , string >();

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

  system.out.println( "*********欢迎光临肯德基餐厅*************" );

  system.out.println( "  菜单   " );

  system.out.println( "1:" +k1.tostring());

  system.out.println( "2:" +k2.tostring());

  system.out.println( "3:" +k3.tostring());

  system.out.println( "4:" +k4.tostring());

  system.out.println( "5:" +k5.tostring());

  system.out.println( "6:" +k6.tostring());

  system.out.println( "7:" +k7.tostring());

  system.out.println( "8:" +k8.tostring());

  system.out.println( "9:" +k9.tostring());

  boolean z= true ; int count= 1 ; //计数器

  float total= 0 ;

  while (z) {

  system.out.println( "请点餐 ：输入编号" );

  scanner sc = new scanner (system.in );

  int i = sc.nextint();

  switch (i) {

  case 1 :

  system.out.println(count+k1.getfname());

  system.out.println( "请输入数量：" );

  scanner sc1= new scanner (system.in );

  int n = sc1.nextint();

  k1.setfnumb(n); //输入数量

  total=total+k1.getfprice(); //计算入总价

  hm.put(k1, "数量：" +string.valueof( k1.getfnumb()) ); //添加进树

  break ;

  case 2 :

  system.out.println(count+k2.getfname());

  system.out.println( "请输入数量：" );

  scanner sc2= new scanner (system.in );

  int n2 = sc2.nextint();

  k2.setfnumb(n2);

  total=total+k2.getfprice(); //计算入总价

  hm.put(k2, "数量：" +string.valueof( k2.getfnumb()) ); //添加进树

  break ;

  case 3 :

  system.out.println(count+k3.getfname());

  system.out.println( "请输入数量：" );

  scanner sc3= new scanner (system.in );

  int n3 = sc3.nextint();

  k3.setfnumb(n3);

  total=total+k3.getfprice(); //计算入总价

  hm.put(k3, "数量：" +string.valueof( k3.getfnumb()) ); //添加进树

  break ;

  case 4 :

  system.out.println(count+k4.getfname());

  system.out.println( "请输入数量：" );

  scanner sc4= new scanner (system.in );

  int n4 = sc4.nextint();

  k4.setfnumb(n4);

  total=total+k4.getfprice(); //计算入总价

  hm.put(k4, "数量：" +string.valueof( k4.getfnumb()) ); //添加进树

  break ;

  case 5 :

  system.out.println(count+k5.getfname());

  system.out.println( "请输入数量：" );

  scanner sc5= new scanner (system.in );

  int n5 = sc5.nextint();

  k5.setfnumb(n5);

  total=total+k5.getfprice(); //计算入总价

  hm.put(k5, "数量：" +string.valueof( k5.getfnumb()) ); //添加进树

  break ;

  case 6 :

  system.out.println(count+k6.getfname());

  system.out.println( "请输入数量：" );

  scanner sc6= new scanner (system.in );

  int n6 = sc6.nextint();

  k6.setfnumb(n6);

  total=total+k6.getfprice(); //计算入总价

  hm.put(k6, "数量：" +string.valueof( k6.getfnumb()) ); //添加进树

  break ;

  case 7 :

  system.out.println(count+k7.getfname());

  system.out.println( "请输入数量：" );

  scanner sc7= new scanner (system.in );

  int n7 = sc7.nextint();

  k7.setfnumb(n7);

  total=total+k7.getfprice(); //计算入总价

  hm.put(k7, "数量：" +string.valueof( k7.getfnumb()) ); //添加进树

  break ;

  case 8 :

  system.out.println(count+k8.getfname());

  system.out.println( "请输入数量：" );

  scanner sc8= new scanner (system.in );

  int n8 = sc8.nextint();

  k8.setfnumb(n8);

  total=total+k8.getfprice(); //计算入总价

  hm.put(k8, "数量：" +string.valueof( k8.getfnumb()) ); //添加进树

  break ;

  case 9 :

  system.out.println(count+k9.getfname());

  system.out.println( "请输入数量：" );

  scanner sc9= new scanner (system.in );

  int n9 = sc9.nextint();

  k9.setfnumb(n9);

  total=total+k9.getfprice(); //计算入总价

  hm.put(k9, "数量：" +string.valueof( k9.getfnumb()) ); //添加进树

  break ;

  default :system.out.println( "请输入正确的号码！" );

  break ;

  }

  //遍历树

  set<kfcfood> ks1 = hm.keyset(); //遍历map

  for (kfcfood s2:ks1) {

  system.out.println( "(" +s2+ "," +hm.get(s2)+ ")" );

  }

  system.out.println( "1 继续点餐 2 重新点餐 3 结束点餐 " );

  scanner sca= new scanner (system.in );

  int n = sca.nextint();

  switch (n) {

  case 1 :

  count++;

  break ;

  case 2 :

  system.out.println( "重新点餐！" );

  hm.clear();

  break ;

  case 3 :

  system.out.println( "总价" +total);

  system.out.println( "结束点餐" );

  z= false ;

  break ;

  default :system.out.println( "请输入正确的号码！" );

  break ;

  }

}

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

  system.out.println( "*********欢迎光临肯德基餐厅*************" );

  system.out.println( "  您的菜单为！   " );

  //遍历树

  set<kfcfood> ks1 = hm.keyset(); //遍历map

  for (kfcfood s2:ks1) {

  system.out.println( " " +s2+ ", " +hm.get(s2)+ " " );

  }

  system.out.println( "总价" +total);

  system.out.println( "订单时间: " + new date());

  system.err.println( "  欢迎下次光临！" );

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

  bufferedwriter bw = new bufferedwriter( new outputstreamwriter( new fileoutputstream( "out.txt" ))); //字符缓冲输出流

  bw.write( "****************************************" );bw.newline();

  bw.write( "*********欢迎光临肯德基餐!*************" );bw.newline();

  bw.write( "  您的菜单为！   " );bw.newline();

  set<kfcfood> ks2 = hm.keyset(); //遍历map

  for (kfcfood s2:ks2) {

  // system.out.println(" "+s2+", "+hm.get(s2)+" ");

  bw.write(s2+ ", " +hm.get(s2));bw.newline();

  }

  //system.out.println("总价"+total);

  bw.write( "订单时间: " + new date());bw.newline();

  bw.write( "  欢迎下次光临！" );bw.newline();

  bw.write( "**********************************" );bw.newline();

  bw.flush();

  bw.close();

  }

}