Java点餐小程序之黑心商人

java;">import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Map.Entry;import java.util.ArrayList;import java.util.Scanner;import java.util.Set;public class MyDianCai {static HashMap<String, String> hs = new HashMap<>();static List<Map> list = new ArrayList<>();static int sum = 0;public static void main(String[] args) {Scanner s = new Scanner(System.in);System.out.println("欢迎来到十字坡孙二娘大酒店");list();while (true) {String in = s.nextLine();String[] remove = in.split("[0-9]");if (Character.isDigit(in.charAt(0))) {dianCai(in);} else if (in.equals("ok")) {ok();} else if (in.equals("sum")) {sum();} else if (in.equals("order")) {order();} else if (remove[0].equals("-")) {String[] removes = in.split("-");remove(removes[1]);} else if (in.equals("list")) {list();} else if (in.equals("help")) {help();} else if (in.equals("exit")) {break;}}System.out.println("退出系统");}public static void list() {System.out.println("本店今日提供：");System.out.println("1.卤肉火烧     /t10元");System.out.println("2.北京烤鸭     /t200元");System.out.println("3.剁鱼头     /t100元");System.out.println("4.炒不烂    /t20元");System.out.println("5.烧茄子     /t30元");System.out.println("数字点菜，ok下单，help显示帮助");}public static void dianCai(String name) {switch (name) {case "1":hs.put("1.卤肉火烧", "1000元");System.out.println("卤肉火烧已添加");break;case "2":hs.put("2.北京烤鸭", "20000元");System.out.println("北京烤鸭已添加");break;case "3":hs.put("3.剁鱼头", "10000元");System.out.println("剁鱼头已添加");break;case "4":hs.put("4.炒不烂", "2000元");System.out.println("炒不烂已添加");break;case "5":hs.put("5.烧茄子", "13000元");System.out.println("烧茄子已添加");break;}Set<String> set = hs.keySet();for (String key : set) {String values = hs.get(key);System.out.println(key + "-----" + values);}}public static void ok() {list.add(hs);hs = new HashMap<>();System.out.println("下单成功，客观先坐，菜稍后就到！下一位！");}public static void order() {Set<String> set = hs.keySet();for (String key : set) {String values = hs.get(key);System.out.println(key + "-----" + values);}}public static void remove(String removes) {switch (removes) {case "1":hs.remove("1.卤肉火烧");break;case "2":hs.remove("2.北京烤鸭");break;case "3":hs.remove("3.剁鱼头");break;case "4":hs.remove("4.炒不烂");break;case "5":hs.remove("5.烧茄子");break;}Set<String> set = hs.keySet();for (String key : set) {String values = hs.get(key);System.out.println(key + "------" + values);}}public static void sum() {for (Map m : list) {Set<String> set = m.keySet();for (String key : set) {String values = (String) m.get(key);String[] prices = values.split("元");int price = Integer.parseInt(prices[0]);// 将字符串转类型换为int型sum += price;}}System.out.println("今天收入"+sum+"元");}public static void help() {System.out.println("list/t-列菜单");System.out.println("数字/t-点菜");System.out.println("-数字/t-移除已点的菜");System.out.println("ok/t-结束点菜并生成订单，然后下单");System.out.println("order/t-查看已点的菜");System.out.println("sum/t-统计销售额");System.out.println("exit/t-退出");System.out.println("help/t-打印帮助信息");}}

欢迎来到十字坡孙二娘大酒店本店今日提供：1.卤肉火烧     	10元2.北京烤鸭     	200元3.剁鱼头     	100元4.炒不烂    	20元5.烧茄子     	30元数字点菜，ok下单，help显示帮助

欢迎来到十字坡孙二娘大酒店本店今日提供：1.卤肉火烧     	10元2.北京烤鸭     	200元3.剁鱼头     	100元4.炒不烂    	20元5.烧茄子     	30元数字点菜，ok下单，help显示帮助5烧茄子已添加5.烧茄子-----13000元4炒不烂已添加5.烧茄子-----13000元4.炒不烂-----2000元