Java 吃货联盟系统（变量、数组）
2024-05-14 20:59:09
1.程序主页面：
package cn.zhang;import java.util.Scanner;public class Demo {public static void main(String[] args) {String[] names = new String[4]; //订餐人姓名 namesString[] Informations = new String[4]; //菜品信息（菜品名称+点菜份数） Informationsint[] times = new int[4]; //送餐时间 timesString[] address = new String[4]; //送餐地址 addressint[] status = new int[4]; //订单状态（0：已预订，1：已完成）statusdouble[] amounts = new double[4]; //订单总金额 amountsString[] dishs = {"酸菜鱼" , "红烧排骨" , "番茄炒鸡蛋" , "地锅鸡"}; //菜品名称 dishsdouble[] prices = {45.0 , 34.0 , 15.0 , 50.0}; //菜品价格 pricesint[] likes = new int [4]; //菜品点赞数 likesScanner sc = new Scanner(System.in); //录入信息int num = -1; //判断循环，输入0返回boolean judge = false; //退出系统do{//系统主页面System.out.println("欢迎使用“吃货联盟订餐系统”");System.out.println("************************");System.out.println("1、我要订餐");System.out.println("2、查看餐袋");System.out.println("3、签收订单");System.out.println("4、删除订单");System.out.println("5、我要点赞");System.out.println("6、退出系统");System.out.println("************************");System.out.print("请选择1-6：");//选择1int choose = sc.nextInt();switch(choose){//1、我要订餐case 1:break; //2.查看餐袋case 2:break; //3.签收订单case 3:break; //4.删除订单case 4: break;//5、我要点赞 case 5:break; //6、退出系统case 6:judge = true;break;default: judge = true;break;}if(!judge){System.out.println("输入0返回主页面"); num = sc.nextInt();}else {break;} }while(num == 0);System.out.println("谢谢使用，欢迎下次光临");sc.close();}
}2.我要点餐页面：
//1、我要订餐
case 1:System.out.println("**我要订餐**");//判断是否可以订餐 true可以，false不可以boolean judge1 = false; //最多4次for (int i = 0; i < names.length;i++) {//如果为空则可以添加订单if(names[i] == null){//更改judger1为true，使for循环结束后，后面if选择语句不判断judge1 = true;System.out.println("*************菜单*************");System.out.println("序号\t菜名\t单价\t点赞数");//菜品信息（菜品名次、价格、点赞数）for (int j = 0; j < dishs.length; j++) {String price = prices[j] + "元"; //拼接菜品价格String like = likes[j] > 0 ? likes[j] + "个赞" : " "; //有点赞数就输出值，没有就是空System.out.println((j+1) + "\t" + dishs[j] + "\t" + price + "\t" +like);}System.out.print("请选择您要点的菜品编号：");int dish = sc.nextInt(); //菜品编号 dish = 菜品名称 数组 dishs（数组） while(dish <= 0 || dish > dishs.length){System.out.print("请输入正确序列号:");dish =sc.nextInt();}System.out.print("请选择您需要的份数："); int copies = sc.nextInt(); //点菜份数 copiesSystem.out.print("请输入订餐人姓名：");String name = sc.next(); //订餐人姓名 name = 订餐人姓名names（数组） System.out.print("请输入送餐时间（送餐时间是10点至20点间整点送餐）：");int time =sc.nextInt(); //送餐时间 time = 送餐时间 times（数组）while(time < 10 || time > 20){System.out.print("你的输入错误！请重新输入10~20之间的整数:");time =sc.nextInt();} System.out.print("请输入送餐地址：");String addres = sc.next(); //送餐地址 addres = 送餐地址 address（数组）String Information = dishs[dish-1]+ "," + copies + "份";//菜品信息Information = 菜品信息（菜品名称+点菜份数）Informations（数组）double amount = prices[dish-1] * copies;//菜品总价（不加配送费）：菜对应的价格乘份数的费用double delivery =(amount >= 50) ? 0 : 6;//送餐费用，大于50不要配送费，小于50要6元配送费。 amount + delivery = 订单总金额 amounts（数组） System.out.println("订餐成功!");System.out.println("您预订的是：" + Information );System.out.println("您的送餐时间是：" + time + "点");System.out.println("餐费：" + amount + "元，送餐费：" + delivery + " 元，总计：" + (amount + delivery) + "元");names[i] = name; //订餐人姓名Informations[i] = Information; //菜品信息（菜品名称+点菜份数）times[i] = time; //送餐时间 address[i] = addres; //送餐地址 amounts[i] = amount + delivery; //订单总金额break;} }if(!judge1){System.out.println("对不起，您的餐袋已经满了！");}break;3. 查看餐袋页面：
//2.查看餐袋
case 2:System.out.println("**查看餐袋**");System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int i = 0; i < names.length; i++) {//没有内容不显示if(names[i] != null){String time2 = times[i] + "点"; //拼接送餐时间点String amount2 = amounts[i] + "元"; //拼接总金额元String statu2 = (status[i] == 0) ? "已预订" : "已完成"; //订单状态int类型默认为0；已预订System.out.println((i+1) + "\t\t" + names[i] + "\t\t" + Informations[i] + "\t\t" + time2+ "\t\t" + address[i] + "\t\t" + amount2 + "\t\t" + statu2);}}break;4. 签收订单页面：
//3.签收订单
case 3://选择2int choose3 = choose;while(choose3 == 3){System.out.println("**签收订单**");//3.无此订单，退出boolean judge3 = false;//签收订单前信息页面System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int i = 0; i < names.length; i++) {if(names[i] != null){String time31 = times[i] + "点";String amount31 = amounts[i] + "元";String statu31 = (status[i] == 0) ? "已预订" : "已完成";System.out.println((i+1) + "\t\t" + names[i] + "\t\t" + Informations[i] + "\t\t" + time31+ "\t\t" + address[i] + "\t\t" + amount31 + "\t\t" + statu31);}}System.out.print("请输入签收订单序列号:");//订单序列号1int number = sc.nextInt();for (int j = 0; j < names.length; j++) {//数组有内容，订单状态是已预订if(names[j] != null && status[j] == 0 && number == (j+1)){status[j] = 1;System.out.println("订单签收完成");judge3 = true;//数组有内容，订单状态是已完成}else if(names[j] != null && status[j] == 1 && number == (j+1)){System.out.println("订单已签收无法再次签收");judge3 = true;}}if(!judge3){System.out.println("无此订单");}//签收订单后信息页面System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int k = 0; k < names.length; k++) {if(names[k] != null){String time32 = times[k] + "点";String amount32 = amounts[k] + "元";String statu32 = (status[k] == 0) ? "已预订" : "已完成";System.out.println((k+1) + "\t\t" + names[k] + "\t\t" + Informations[k] + "\t\t" + time32+ "\t\t" + address[k] + "\t\t" + amount32 + "\t\t" + statu32);}}System.out.println("输入3再次签收,输入其他整数退出签收页面");choose3 = sc.nextInt(); }break;5.删除订单页面：
//4.删除订单case 4: //选择2int choose4 = choose;while(choose4 == 4){System.out.println("**删除订单**");//4删除订单退出boolean judge4 = false;//删除订单前页面System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int k = 0; k < names.length; k++) {if(names[k] != null){String time41 = times[k] + "点";String amount41 = amounts[k] + "元";String statu41 = (status[k] == 0) ? "已预订" : "已完成";System.out.println((k+1) + "\t\t" + names[k] + "\t\t" + Informations[k] + "\t\t" + time41+ "\t\t" + address[k] + "\t\t" + amount41 + "\t\t" + statu41);}}System.out.print("请输入删除订单序列号:");//订单序列号2int number2 = sc.nextInt();for (int i = 0; i < names.length; i++) {if(names[i] != null && status[i] == 1 && number2 == (i+1)){for (int j = number2-1; j < names.length-1; j++) {names[j] = names[j+1]; //订餐人姓名Informations[j] = Informations[j+1]; //菜品信息（菜品名称+点菜份数）times[j] = times[j+1]; //送餐时间 address[j] = address[j+1]; //送餐地址 amounts[j] = amounts[j+1]; //订单总金额status[j] = status [j+1]; //订单状态 }names[names.length -1] = null; //StringInformations[Informations.length - 1] = null; //Stringtimes[times.length - 1] = 0; //intaddress[address.length - 1] = null; //Stringamounts[amounts.length - 1] = 0.0; //doublestatus[status.length - 1] = 0; //intSystem.out.println("订单删除成功");judge4 = true;break;}else if(names[i] != null && status[i] == 0 && number2 == (i+1)){System.out.println("订单未签收，无法删除");judge4 = true;break; }}if(!judge4){System.out.println("无此订单"); }//删除订单后页面System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int k = 0; k < names.length; k++) {if(names[k] != null){String time42 = times[k] + "点";String amount42 = amounts[k] + "元";String statu42 = (status[k] == 0) ? "已预订" : "已完成";System.out.println((k+1) + "\t\t" + names[k] + "\t\t" + Informations[k] + "\t\t" + time42+ "\t\t" + address[k] + "\t\t" + amount42 + "\t\t" + statu42);}}System.out.println("输入4再次删除,输入其他整数退出删除页面");choose4 = sc.nextInt(); }break;6. 我要点赞页面：
//5、我要点赞 case 5://选择3int choose5 = choose;while(choose5 == 5){System.out.println("**我要点赞**");//点赞前菜单System.out.println("*************菜单*************");System.out.println("序号"+"\t"+"菜名"+"\t" + "单价" + "\t"+ "点赞数");//菜品信息（菜品名次、价格、点赞数）for (int j = 0; j < dishs.length; j++) {String price51 = prices[j] + "元"; //拼接菜品价格String like51 = likes[j] > 0 ? likes[j] + "个赞" : " "; //有点赞数就输出值，没有就是空System.out.println((j+1) + "\t" + dishs[j] + "\t" + price51 + "\t" +like51);}System.out.println("请输入你要点赞的序列号");//订单序列号3int number3 = sc.nextInt();while(number3 <= 0 || number3 > dishs.length){System.out.print("请输入正确序列号:");number3 =sc.nextInt();}likes[number3-1]++;System.out.println("点赞成功");//点赞后菜单System.out.println("*************菜单*************");System.out.println("序号"+"\t"+"菜名"+"\t" + "单价" + "\t"+ "点赞数");//菜品信息（菜品名次、价格、点赞数）for (int j = 0; j < dishs.length; j++) {String price52 = prices[j] + "元"; //拼接菜品价格String like52 = likes[j] > 0 ? likes[j] + "个赞" : " "; //有点赞数就输出值，没有就是空System.out.println((j+1) + "\t" + dishs[j] + "\t" + price52 + "\t" +like52);}System.out.println("输入5再次点赞,输入其他整数退出点赞页面");choose5 = sc.nextInt(); }break;7.退出系统页面：
总代码：
package cn.zhang;import java.util.Scanner;public class FoodieAllianceSystem {public static void main(String[] args) {String[] names = new String[4]; //订餐人姓名 namesString[] Informations = new String[4]; //菜品信息（菜品名称+点菜份数） Informationsint[] times = new int[4]; //送餐时间 timesString[] address = new String[4]; //送餐地址 addressint[] status = new int[4]; //订单状态（0：已预订，1：已完成）statusdouble[] amounts = new double[4]; //订单总金额 amountsString[] dishs = {"酸菜鱼" , "红烧排骨" , "番茄炒鸡蛋" , "地锅鸡"}; //菜品名称 dishsdouble[] prices = {45.0 , 34.0 , 15.0 , 50.0}; //菜品价格 pricesint[] likes = new int [4]; //菜品点赞数 likesScanner sc = new Scanner(System.in); //录入信息int num = -1; //判断循环，输入0返回boolean judge = false; //退出系统do{//系统主页面System.out.println("欢迎使用“吃货联盟订餐系统”");System.out.println("************************");System.out.println("1、我要订餐");System.out.println("2、查看餐袋");System.out.println("3、签收订单");System.out.println("4、删除订单");System.out.println("5、我要点赞");System.out.println("6、退出系统");System.out.println("************************");System.out.print("请选择1-6：");//选择1int choose = sc.nextInt();switch(choose){//1、我要订餐case 1:System.out.println("**我要订餐**");//判断是否可以订餐 true可以，false不可以boolean judge1 = false; //最多4次for (int i = 0; i < names.length;i++) {//如果为空则可以添加订单if(names[i] == null){//更改judger1为true，使for循环结束后，后面if选择语句不判断judge1 = true;System.out.println("*************菜单*************");System.out.println("序号\t菜名\t单价\t点赞数");//菜品信息（菜品名次、价格、点赞数）for (int j = 0; j < dishs.length; j++) {String price = prices[j] + "元"; //拼接菜品价格String like = likes[j] > 0 ? likes[j] + "个赞" : " "; //有点赞数就输出值，没有就是空System.out.println((j+1) + "\t" + dishs[j] + "\t" + price + "\t" +like);}System.out.print("请选择您要点的菜品编号：");int dish = sc.nextInt(); //菜品编号 dish = 菜品名称 数组 dishs（数组） while(dish <= 0 || dish > dishs.length){System.out.print("请输入正确序列号:");dish =sc.nextInt();}System.out.print("请选择您需要的份数："); int copies = sc.nextInt(); //点菜份数 copiesSystem.out.print("请输入订餐人姓名：");String name = sc.next(); //订餐人姓名 name = 订餐人姓名names（数组） System.out.print("请输入送餐时间（送餐时间是10点至20点间整点送餐）：");int time =sc.nextInt(); //送餐时间 time = 送餐时间 times（数组）while(time < 10 || time > 20){System.out.print("你的输入错误！请重新输入10~20之间的整数:");time =sc.nextInt();} System.out.print("请输入送餐地址：");String addres = sc.next(); //送餐地址 addres = 送餐地址 address（数组）String Information = dishs[dish-1]+ "," + copies + "份";//菜品信息Information = 菜品信息（菜品名称+点菜份数）Informations（数组）double amount = prices[dish-1] * copies;//菜品总价（不加配送费）：菜对应的价格乘份数的费用double delivery =(amount >= 50) ? 0 : 6;//送餐费用，大于50不要配送费，小于50要6元配送费。 amount + delivery = 订单总金额 amounts（数组） System.out.println("订餐成功!");System.out.println("您预订的是：" + Information );System.out.println("您的送餐时间是：" + time + "点");System.out.println("餐费：" + amount + "元，送餐费：" + delivery + " 元，总计：" + (amount + delivery) + "元");names[i] = name; //订餐人姓名Informations[i] = Information; //菜品信息（菜品名称+点菜份数）times[i] = time; //送餐时间 address[i] = addres; //送餐地址 amounts[i] = amount + delivery; //订单总金额break;} }if(!judge1){System.out.println("对不起，您的餐袋已经满了！");}break;//2.查看餐袋case 2:System.out.println("**查看餐袋**");System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int i = 0; i < names.length; i++) {//没有内容不显示if(names[i] != null){String time2 = times[i] + "点"; //拼接送餐时间点String amount2 = amounts[i] + "元"; //拼接总金额元String statu2 = (status[i] == 0) ? "已预订" : "已完成"; //订单状态int类型默认为0；已预订System.out.println((i+1) + "\t\t" + names[i] + "\t\t" + Informations[i] + "\t\t" + time2+ "\t\t" + address[i] + "\t\t" + amount2 + "\t\t" + statu2);}}break;//3.签收订单case 3://选择2int choose3 = choose;while(choose3 == 3){System.out.println("**签收订单**");//3.无此订单，退出boolean judge3 = false;//签收订单前信息页面System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int i = 0; i < names.length; i++) {if(names[i] != null){String time31 = times[i] + "点";String amount31 = amounts[i] + "元";String statu31 = (status[i] == 0) ? "已预订" : "已完成";System.out.println((i+1) + "\t\t" + names[i] + "\t\t" + Informations[i] + "\t\t" + time31+ "\t\t" + address[i] + "\t\t" + amount31 + "\t\t" + statu31);}}System.out.print("请输入签收订单序列号:");//订单序列号1int number = sc.nextInt();for (int j = 0; j < names.length; j++) {//数组有内容，订单状态是已预订if(names[j] != null && status[j] == 0 && number == (j+1)){status[j] = 1;System.out.println("订单签收完成");judge3 = true;//数组有内容，订单状态是已完成}else if(names[j] != null && status[j] == 1 && number == (j+1)){System.out.println("订单已签收无法再次签收");judge3 = true;}}if(!judge3){System.out.println("无此订单");}//签收订单后信息页面System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int k = 0; k < names.length; k++) {if(names[k] != null){String time32 = times[k] + "点";String amount32 = amounts[k] + "元";String statu32 = (status[k] == 0) ? "已预订" : "已完成";System.out.println((k+1) + "\t\t" + names[k] + "\t\t" + Informations[k] + "\t\t" + time32+ "\t\t" + address[k] + "\t\t" + amount32 + "\t\t" + statu32);}}System.out.println("输入3再次签收,输入其他整数退出签收页面");choose3 = sc.nextInt(); }break;//4.删除订单case 4: //选择2int choose4 = choose;while(choose4 == 4){System.out.println("**删除订单**");//4删除订单退出boolean judge4 = false;//删除订单前页面System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int k = 0; k < names.length; k++) {if(names[k] != null){String time41 = times[k] + "点";String amount41 = amounts[k] + "元";String statu41 = (status[k] == 0) ? "已预订" : "已完成";System.out.println((k+1) + "\t\t" + names[k] + "\t\t" + Informations[k] + "\t\t" + time41+ "\t\t" + address[k] + "\t\t" + amount41 + "\t\t" + statu41);}}System.out.print("请输入删除订单序列号:");//订单序列号2int number2 = sc.nextInt();for (int i = 0; i < names.length; i++) {if(names[i] != null && status[i] == 1 && number2 == (i+1)){for (int j = number2-1; j < names.length-1; j++) {names[j] = names[j+1]; //订餐人姓名Informations[j] = Informations[j+1]; //菜品信息（菜品名称+点菜份数）times[j] = times[j+1]; //送餐时间 address[j] = address[j+1]; //送餐地址 amounts[j] = amounts[j+1]; //订单总金额status[j] = status [j+1]; //订单状态 }names[names.length -1] = null; //StringInformations[Informations.length - 1] = null; //Stringtimes[times.length - 1] = 0; //intaddress[address.length - 1] = null; //Stringamounts[amounts.length - 1] = 0.0; //doublestatus[status.length - 1] = 0; //intSystem.out.println("订单删除成功");judge4 = true;break;}else if(names[i] != null && status[i] == 0 && number2 == (i+1)){System.out.println("订单未签收，无法删除");judge4 = true;break; }}if(!judge4){System.out.println("无此订单"); }//删除订单后页面System.out.println("序号\t\t订餐人\t\t菜品信息\t\t送餐时间\t\t送餐地址\t\t订单总金额\t\t订单状态");for (int k = 0; k < names.length; k++) {if(names[k] != null){String time42 = times[k] + "点";String amount42 = amounts[k] + "元";String statu42 = (status[k] == 0) ? "已预订" : "已完成";System.out.println((k+1) + "\t\t" + names[k] + "\t\t" + Informations[k] + "\t\t" + time42+ "\t\t" + address[k] + "\t\t" + amount42 + "\t\t" + statu42);}}System.out.println("输入4再次删除,输入其他整数退出删除页面");choose4 = sc.nextInt(); }break;//5、我要点赞 case 5://选择3int choose5 = choose;while(choose5 == 5){System.out.println("**我要点赞**");//点赞前菜单System.out.println("*************菜单*************");System.out.println("序号"+"\t"+"菜名"+"\t" + "单价" + "\t"+ "点赞数");//菜品信息（菜品名次、价格、点赞数）for (int j = 0; j < dishs.length; j++) {String price51 = prices[j] + "元"; //拼接菜品价格String like51 = likes[j] > 0 ? likes[j] + "个赞" : " "; //有点赞数就输出值，没有就是空System.out.println((j+1) + "\t" + dishs[j] + "\t" + price51 + "\t" +like51);}System.out.println("请输入你要点赞的序列号");//订单序列号3int number3 = sc.nextInt();while(number3 <= 0 || number3 > dishs.length){System.out.print("请输入正确序列号:");number3 =sc.nextInt();}likes[number3-1]++;System.out.println("点赞成功");//点赞后菜单System.out.println("*************菜单*************");System.out.println("序号"+"\t"+"菜名"+"\t" + "单价" + "\t"+ "点赞数");//菜品信息（菜品名次、价格、点赞数）for (int j = 0; j < dishs.length; j++) {String price52 = prices[j] + "元"; //拼接菜品价格String like52 = likes[j] > 0 ? likes[j] + "个赞" : " "; //有点赞数就输出值，没有就是空System.out.println((j+1) + "\t" + dishs[j] + "\t" + price52 + "\t" +like52);}System.out.println("输入5再次点赞,输入其他整数退出点赞页面");choose5 = sc.nextInt(); }break;//6、退出系统case 6:judge = true;break;default: judge = true;break;}if(!judge){System.out.println("输入0返回主页面"); num = sc.nextInt();}else {break;} }while(num == 0);System.out.println("谢谢使用，欢迎下次光临");sc.close();}
}
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