我终于完成了我简单的老虎机代码，但是我很难理解类。我想把它分成两个类，不知道如何去做。我的想法是把前半部分做随机生成。创建一个名为Reels的类，并把代码放在public void spin的方法中（）.虽然，当我把它拆成另一个类并试图调用spin方法时，事情变得疯狂了...如果这不是最简单的解释，我道歉，并希望/感谢我能得到的任何帮助。

import java.util.Scanner; 
    import java.util.Random;
    import java.util.Arrays;
       
    
    
    public class LabProgram {
    
    
       public static void main(String[] args) {
          Scanner scnr = new Scanner(System.in);
       
          final int numReels = 3; //Declare how many reels spin on machine
          Random random = new Random(); // Create Random
    
          int[ ] symbols = new int[numReels]; // Create an array of three random numbers
          String[ ] logo = new String[numReels]; // Second Array to assign numbers to symbols
          final String[] allSymbols = {"Cherry", "7", "Grape", "Orange", "Lemon", "Spade", "Club", "Diamond", "Heart", "Ace"}; // A final list of what symbols there are
          
          
          for (int i = 0; i < symbols.length; ++i) { // Loop through the integer list to obtain random numbers
             symbols[ i ] = random.nextInt(10); //Random numbers from 0 - 9
          //System.out.println(symbols[i]); Test to make sure list is looping properly
          }
          for (int i = 0; i < symbols.length; ++i) { // Assign second array to the correct symbol according to number
             logo[i] = allSymbols[symbols[i]];
    }
             
          
       //Test each element in list to make sure obtaining correct values
    //System.out.println("symbol #: " + symbols[0] + " logo: " + logo[0]);
    //System.out.println("symbol #: " + symbols[1] + " logo: " + logo[1]);
    //System.out.println("symbol #: " + symbols[2] + " logo: " + logo[2]);
       
       // Simplify each element by assigning to single letter variables
       int a = symbols[0];
       int b = symbols[1];
       int c = symbols[2];
       
       String answer = "Y"; // Variable to be used in while loop (continue playing or not)
       int userBet; // Variable for amount user bets
       int doub; //Variable for reward when user matches two symbols
       int trip; //Variable for reward when user matches three symbols
       int jack; //Variable for reward when user matches three jackpot symbols
       int amountWon = 0;
       
       System.out.println("Welcome to the Simple Slot Machine! Enter a betting amount to spin!!"); // Print intro to user
       
       do { //do-while loop for when answer variable is Y or y
       userBet = scnr.nextInt(); // Take input for betting amount
       if (userBet < 10) { // Bet must be higher than $10
        System.out.println("Bet must be higher then $10");
       }
       
       if (a != b && a != c && b != c) { // When no symbols match the user loses amount that was bet
          System.out.println("You lost your $" + userBet);
          amountWon -= userBet;
       }
       else if (a == 1 && b == 1 && c == 1) { // When all jackpot symbols match user wins Jackpot and adds to winnings
        jack = userBet * 100;
        System.out.println("Congratulations! You have won with a " + logo[0] + ", " + logo[1] + ", " + logo[2] + " the jackpot of $" + jack);
        amountWon += jack;
       }
       else if (a == b && b == c) { // When three symbols match user wins triple award and adds to winnings
        trip = userBet * 70;
        System.out.println("Congratulations, you have won with a Triple!" + logo[0] + ", " + logo[1] + ", " + logo[2] + " $" + trip); 
        amountWon += trip;
       }
       else if (a == b || a == c || b == c) { // When two symbols match user wins award and add to winnings
        doub = userBet * 30;
        System.out.println("Congratulations, you have won with a Double!" + logo[0] + ", " + logo[1] + ", " + logo[2] + " $" + doub);
        amountWon += doub;
       }
       System.out.println("Continue? Y/N "); // Once awards accounted for ask if player continues or not
       answer = scnr.next();
    } while (answer.equals("y") || answer.equals("Y"));
      if (!answer.equals("Y")) {
         if (amountWon < 0) { //Print statement for when player is in the hold
          System.out.println("You ended losing " + amountWon +" dollars" + ", but people always stop before they hit it big!");   
         }
         else { // Print statement for when player is in positive
        System.out.println("You ended with $" + amountWon + " come back again!"); 
         }
       }
      
       }
          
       }

更好地可视化我如何拆分代码：

import java.util.Scanner; 
import java.util.Random;
import java.util.Arrays;

public class Reel {
   
   public void spin() {
   final int numReels = 3; //Declare how many reels spin on machine
      Random random = new Random(); // Create Random

      int[ ] symbols = new int[numReels]; // Create an array of three random numbers
      String[ ] logo = new String[numReels]; // Second Array to assign numbers to symbols
      final String[] allSymbols = {"Cherry", "7", "Grape", "Orange", "Lemon", "Spade", "Club", "Diamond", "Heart", "Ace"}; // A final list of what symbols there are
      
      
      for (int i = 0; i < symbols.length; ++i) { // Loop through the integer list to obtain random numbers
         symbols[ i ] = random.nextInt(10); //Random numbers from 0 - 9
      //System.out.println(symbols[i]); Test to make sure list is looping properly
      }
      for (int i = 0; i < symbols.length; ++i) { // Assign second array to the correct symbol according to number
         logo[i] = allSymbols[symbols[i]];
}
}
   
}

import java.util.Scanner; 
import java.util.Random;
import java.util.Arrays;
   

public class LabProgram {

   public static void main(String[] args) {
      Scanner scnr = new Scanner(System.in);
   Reel action = new Reel();
         
   action.spin();   
   //Test each element in list to make sure obtaining correct values
//System.out.println("symbol #: " + symbols[0] + " logo: " + logo[0]);
//System.out.println("symbol #: " + symbols[1] + " logo: " + logo[1]);
//System.out.println("symbol #: " + symbols[2] + " logo: " + logo[2]);
   
   // Simplify each element by assigning to single letter variables
   int a = symbols[0];
   int b = symbols[1];
   int c = symbols[2];
   
   String answer = "Y"; // Variable to be used in while loop (continue playing or not)
   int userBet; // Variable for amount user bets
   int doub; //Variable for reward when user matches two symbols
   int trip; //Variable for reward when user matches three symbols
   int jack; //Variable for reward when user matches three jackpot symbols
   int amountWon = 0;
   
   System.out.println("Welcome to the Simple Slot Machine! Enter a betting amount to spin!!"); // Print intro to user
   
   do { //do-while loop for when answer variable is Y or y
   userBet = scnr.nextInt(); // Take input for betting amount
   if (userBet < 10) { // Bet must be higher than $10
    System.out.println("Bet must be higher then $10");
   }
   
   if (a != b && a != c && b != c) { // When no symbols match the user loses amount that was bet
      System.out.println("You lost your $" + userBet);
      amountWon -= userBet;
   }
   else if (a == 1 && b == 1 && c == 1) { // When all jackpot symbols match user wins Jackpot and adds to winnings
    jack = userBet * 100;
    System.out.println("Congratulations! You have won with a " + logo[0] + ", " + logo[1] + ", " + logo[2] + " the jackpot of $" + jack);
    amountWon += jack;
   }
   else if (a == b && b == c) { // When three symbols match user wins triple award and adds to winnings
    trip = userBet * 70;
    System.out.println("Congratulations, you have won with a Triple!" + logo[0] + ", " + logo[1] + ", " + logo[2] + " $" + trip); 
    amountWon += trip;
   }
   else if (a == b || a == c || b == c) { // When two symbols match user wins award and add to winnings
    doub = userBet * 30;
    System.out.println("Congratulations, you have won with a Double!" + logo[0] + ", " + logo[1] + ", " + logo[2] + " $" + doub);
    amountWon += doub;
   }
   System.out.println("Continue? Y/N "); // Once awards accounted for ask if player continues or not
   answer = scnr.next();
} while (answer.equals("y") || answer.equals("Y"));
  if (!answer.equals("Y")) {
     if (amountWon < 0) { //Print statement for when player is in the hold
      System.out.println("You ended losing " + amountWon +" dollars" + ", but people always stop before they hit it big!");   
     }
     else { // Print statement for when player is in positive
    System.out.println("You ended with $" + amountWon + " come back again!"); 
     }
   }
  
   }
      
   }