从同一个包调用一个类并分配变量

Question

我想将RestaurantSelector1类拉入CuisineChoice，这样我就可以让用户输入选择，然后我可以将其分配给RestaurantSelector1中的变量（如果这样做有道理。这是我有：

在RestaurantSelector1：

public class RestaurantSelector1 { 

public static String getRandom(List<String[]> list) { 
Random random = new Random(); 
int listAccess = random.nextInt(list.size()); 
String[] s = list.get(listAccess); 
return s[random.nextInt(s.length)]; 


} 


public static void main(String[] args){ 
ArrayList<String[]> WestVillageCuisine = new ArrayList<String[]>(); 
WestVillageCuisine.add(Expensive.WestVillage.italian); 
. 
. 
. 
WestVillageCuisine.add(Expensive.WestVillage.greek); 

final String[] randomCuisine =  WestVillageCuisine.get(random.nextInt(WestVillageCuisine.size())); 
final String randomRestaurant = randomCuisine[random.nextInt(randomCuisine.length)]; 
final String[] randomWVItalian = WestVillageCuisine.get(0); 
final String westVillageItalian = r randomWVItalian[random.nextInt(randomWVItalian.length)]; 
System.out.println(getRandom(WestVillageCuisine)); 
System.out.println(randomRestaurant); 
System.out.println(westVillageItalian); 
} 

这是美食Choice类：

class CuisineChoice{ 
public static void main(String[] args){ 
RestaurantSelector1 A = new RestaurantSelector1(); 

System.out.println("What price range are you looking for? one = $-$$ and two = $$$-$$$$"); 
    Scanner scan2 = new Scanner(System.in); 
    String price = scan2.next(); 
    if (price.equals("two")){ 
     price = "Expensive"; 
    System.out.println("In which neighborhood would you like to eat?"); 
    Scanner scan = new Scanner(System.in); 
    String location = scan.next(); 
if (null != location)switch (location) { 
     case "Tribeca":{ 
      System.out.println("Great! And what type cuisine would you like in " + location + " ?"); 
      Scanner scan1 = new Scanner(System.in); 
      String type = scan1.next(); 
      System.out.print(location + " " + type + " " + price); 


      break; 

      } 
     case "West Village":{ 
      System.out.println("Great! And what type cuisine would you like in " + location + " ?"); 
      Scanner scan1 = new Scanner(System.in); 
      String type = scan1.next(); 
      System.out.print(location + " " + type + " " + price); 

       break; 
      } 
     case "Flatiron":{ 
      System.out.println("Great! And what type cuisine would you like in " + location + " ?"); 
      Scanner scan1 = new Scanner(System.in); 
      String type = scan1.next(); 
      System.out.print(location + " " + type + " " + price); 
       break; 
      } 
     case "Chelsea":{ 
      System.out.println("Great! And what type cuisine would you like in " + location + " ?"); 
      Scanner scan1 = new Scanner(System.in); 
      String type = scan1.next(); 
      System.out.print(location + " " + type + " " + price); 
       break; 
      } 
     default: 
      break; 
    } 
    } 
    else{ 
    price= "Inexpensive"; System.out.println("In which neighborhood would you like to eat?"); 
    Scanner scan3 = new Scanner(System.in); 
    String location1 = scan3.next(); 
if (null != location1)switch (location1) { 
     case "Tribeca":{ 
      System.out.println("Great! And what type cuisine would you like in " + location1 + " ?"); 
      Scanner scan1 = new Scanner(System.in); 
      String type = scan1.next(); 
      System.out.print(location1 + " " + type + " " + price); 
       break; 
      } 
     case "West Village":{ 
      System.out.println("Great! And what type cuisine would you like in " + location1 + " ?"); 
      Scanner scan1 = new Scanner(System.in); 
      String type = scan1.next(); 
      System.out.print(location1 + " " + type + " " + price); 
       break; 
      } 
     case "Flatiron":{ 
      System.out.println("Great! And what type cuisine would you like in " + location1 + " ?"); 
      Scanner scan1 = new Scanner(System.in); 
      String type = scan1.next(); 
      System.out.print(location1 + " " + type + " " + price); 
       break; 
      } 
     case "Chelsea":{ 
      System.out.println("Great! And what type cuisine would you like in " + location1 + " ?"); 
      Scanner scan1 = new Scanner(System.in); 
      String type = scan1.next(); 
      System.out.print(location1 + " " + type + " " + price); 
       break; 
      } 
     default: 
      break; 
    } 

} 
} 
} 

我只是无法弄清楚如何牛逼o使用位置和美食类型的用户输入作为输入，以获得该位置的该餐厅的随机餐厅。即使让RestaurantSelector1类出现在CuisineChoice中，我也遇到了麻烦。

任何帮助将不胜感激！

Answer 1

两者都有主要方法，哪一个是应用程序的起点，以及您的应用程序的结构是什么，他们是在同一个包还是不同的包中？而且你的代码中有一些类似if语句的错字，它没有“{”来打开语句，在case语句中，你不需要“{}”。

if (null != location)switch (location) { 

它应该是：

if (null != location){ switch (location) {