避免重置整數變量

Question

我正在Java中製作一款遊戲，您必須照顧一隻狗。我讓自己的遊戲方法自己調用，這樣我就不用多次複製和粘貼這個方法中的內容。問題是我不知道如何繞過我聲明的兩個整數值，因爲整數值是通過每個選項添加和減去的，再次調用該方法會將這些更改的值更改回默認值。

import java.io.File; 
    import java.util.Scanner; 

    public class Main { 

     public static Scanner kybd = new Scanner(System.in); 

     public static void main(String[] args) { 
      game(); 
     } 

     public static void game() { 
      Integer diet; 
      diet = 5; 
      Integer happiness; 
      happiness = 10; 
      System.out.println(""); 
      System.out.println("Dog \t Hunger: " + diet 
           + "\n \t Happiness: " +  happiness); 
      System.out.println(""); 
      System.out.println("1. Feed \n2. Play \n3. Ignore"); 
      System.out.println(""); 
      System.out.print("> "); 
      String input = kybd.nextLine(); 
      if (input.equalsIgnoreCase("1")) { 
       diet++; 
       game(); // This is supposed to go to the 
         // beginning with the changed value of diet. 
      } else if (input.equalsIgnoreCase("2")) { 
       happiness++; 
       game(); // This is supposed to go to the 
         // beginning with the changed value of happiness. 
      } else if (input.equalsIgnoreCase("3")) { 
       happiness--; 
       diet--; 
       game(); // This is supposed to go to the 
         // beginning with the changed value of happiness. 
      } else { 
       System.out.println("Invalid Input"); 
       game(); // This is supposed to go the beginning 
         // where you can change your input but 
         // still has your changed values. 
      } 
    if (diet <= 0); 
    { 
     System.out.println("Your dog died because it did not eat."); 
     game(); // This is supposed to go to the beginning 
       // with the default values. 
    } 
    if (diet > 10); 
    { 
     System.out.println("Your dog died because it was overfed."); 
     game(); // This is supposed to go to the 
       // beginning with the default values. 
    } 
    if (happiness <= 0); 
    { 
     diet--; 
     System.out.println("Your dog is no longer happy. He will not eat."); 
    } 
    { 
     if (happiness > 10); 
     System.out.println("Your dog died because it was too excited."); 
     game(); // This is supposed to go to the 
       // beginning with the default values. 
    } 
} 
} 

Answer 1

如果我理解正確的方式你的問題，你必須做的唯一的事情就是聲明這兩個變量爲類變量（靜態或沒有）。所以最後的代碼是：

import java.io.File; 
import java.util.Scanner; 
public class Main { 

    public static Scanner kybd = new Scanner(System.in); 

    public static int diet = 5; 
    public static int happiness = 10; 

    public static void main(String[] args) { 
     game(); 
    } 

問候

編輯DOG DIE

public static die() { 
    diet=5; 
    happiness=10; 
} 

調用此函數每次你，你的狗的呼叫比賽之前死亡（）。