java—初始化类时未传递值

6qftjkof  于 2021-07-13  发布在  Java
关注(0)|答案(4)|浏览(488)

我正在制作一个rpg类生成器，它根据用户选择的项传递stat值，根据这个选择，会生成一个新的类示例，但是当我显示值时，就好像从未传递过值一样。
下面是我的代码，首先是类页面，然后是一个用于测试和设置类值的文件：

  1. package com.polaris.mbti;
  3.     public class MBTI_Type 
  4.     {
  5.        private int Se;
  6.        private int Si;
  7.        private int Ne;
  8.        private int Ni;
  9.        private int Te;
  10.        private int Ti;
  11.        private int Fe;
  12.        private int Fi;
  13.        private int Vitality;
  14.        private int Durability;
  15.        private int Strength;
  16.        private int Tact;
  17.        private int Loyalty;
  18.        private int Friendliness;
  19.        private int Ambition;
  20.        private int Insight;
  21.        private int Foresight;
  22.        private int Humanity;
  23.        private int Revelation;
  24.        private int Charisma;
  25.        private int Dexterity;
  26.        private int Evasion;
  27.        private int Accuracy;
  28.        private int Agility;
  29.        private int Zest;
  30.        private int Grace;
  31.        private int Intelligence;
  32.        private int Curiousity;
  33.        private int Analysis;
  34.        private int Idealism;
  35.        private int Enthusiasm;
  36.        private int Conviction;
  37.    public void setBaseStats(int introSen, int extroSen, int introThk, int extroThk, int introInuit, int extroInuit, int introFel, int extroFel)
  38.    {
  39.       Se = extroSen;
  40.       Si = introSen;
  41.       Ne = extroInuit;
  42.       Ni = introInuit;
  43.       Te = extroThk;
  44.       Ti = introThk;
  45.       Fe = extroFel;
  46.       Fi = introFel;
  47.       setMajorStats();
  48.    }
  49.    public void setMajorStats()
  50.    {
  51.       setMinorStats(Te, Si, Vitality, Durability, Strength);
  52.       setMinorStats(Te, Ni, Ambition, Insight, Foresight);
  53.       setMinorStats(Fe, Si, Tact, Loyalty, Friendliness);
  54.       setMinorStats(Fe, Ni, Humanity, Revelation, Charisma);
  55.       setMinorStats(Ti, Se, Dexterity, Evasion, Accuracy);
  56.       setMinorStats(Ti, Ne, Intelligence, Curiousity, Analysis);
  57.       setMinorStats(Fi, Se, Agility, Zest, Grace);
  58.       setMinorStats(Fi, Ne, Idealism, Enthusiasm, Conviction);
  59.   }
  60.   public void setMinorStats(double A, double B, double Major, double MinorA, double MinorB)
  61.   {
  62.       Major = (A + B)/2;
  63.       if(A > B)
  64.       {
  65.           MinorA = (Major) - 1;
  66.           MinorB = (Major) + 1;
  67.       }
  68.       if(B > A)
  69.       {
  70.           MinorA = (Major) + 1;
  71.           MinorB = (Major) - 1;
  72.       }
  73.   }
  74.   public void levelUp()
  75.   {
  77.   }
  78.   public void showStats()
  79.   {
  80.      System.out.println(Vitality);
  81.      System.out.println(Durability);
  82.      System.out.println(Strength);
  83.      System.out.println(Tact);
  84.      System.out.println(Loyalty);
  85.      System.out.println(Friendliness);
  86.      System.out.println(Ambition);
  87.      System.out.println(Insight);
  88.      System.out.println(Foresight);
  89.      System.out.println(Humanity);
  90.      System.out.println(Revelation);
  91.      System.out.println(Charisma);
  92.      System.out.println(Dexterity);
  93.      System.out.println(Evasion);
  94.      System.out.println(Accuracy);
  95.      System.out.println(Agility);
  96.      System.out.println(Zest);
  97.      System.out.println(Grace);
  98.      System.out.println(Intelligence);
  99.      System.out.println(Curiousity);
  100.      System.out.println(Analysis);
  101.      System.out.println(Idealism);
  102.      System.out.println(Enthusiasm);
  103.      System.out.println(Conviction);
  104.   }
  106.  }

下面是一个类，它有一个主要的测试方法：

  1. package com.polaris.mbti;
  2. import java.util.Scanner;
  4. public class TestMBTI2 
  5. {
  7. public static void main(String[] args) 
  8. {
  9.     Scanner inputDevice = new Scanner(System.in);
  10.     System.out.println("Please enter a personality type from the choices:");
  11.     System.out.println(" 1  - ESTJ");
  12.     System.out.println(" 2  - ENTJ");
  13.     System.out.println(" 3  - ISTP");
  14.     System.out.println(" 4  - INTP");
  15.     System.out.println(" 5  - ESFJ");
  16.     System.out.println(" 6  - ENFJ");
  17.     System.out.println(" 7  - ISFP");
  18.     System.out.println(" 8  - INFP");
  19.     System.out.println(" 9  - ESTP");
  20.     System.out.println(" 10 - ESFP");
  21.     System.out.println(" 11 - ISTJ");
  22.     System.out.println(" 12 - ISFJ");
  23.     System.out.println(" 13 - ENTP");
  24.     System.out.println(" 14 - ENFP");
  25.     System.out.println(" 15 - INTJ");
  26.     System.out.println(" 16 - INFJ");
  27.     int choice = inputDevice.nextInt();
  29.     switch(choice)
  30.     {
  31.     case 1:
  32.         MBTI_Type ESTJ = new MBTI_Type();
  33.         ESTJ.setBaseStats(14, 6, 8, 16, 4, 12, 10, 2);
  34.         ESTJ.showStats();
  35.         break;
  36.     case 2:
  37.         MBTI_Type ENTJ = new MBTI_Type();
  38.         ENTJ.setBaseStats(4, 12, 8, 16, 14, 6, 10, 2);
  39.         ENTJ.showStats();
  40.         break;
  41.     case 3:
  42.         MBTI_Type ISTP = new MBTI_Type();
  43.         ISTP.setBaseStats(6, 14, 16, 8, 12, 4, 2, 10);
  44.         ISTP.showStats();
  45.         break;
  46.     case 4:
  47.         MBTI_Type INTP = new MBTI_Type();
  48.         INTP.setBaseStats(12, 4, 16, 8, 4, 12, 2, 10);
  49.         INTP.showStats();
  50.         break;
  51.     case 5:
  52.         MBTI_Type ESFJ = new MBTI_Type();
  53.         ESFJ.setBaseStats(14, 6, 10, 2, 4, 12, 8, 16);
  54.         ESFJ.showStats();
  55.         break;
  56.     case 6:
  57.         MBTI_Type ENFJ = new MBTI_Type();
  58.         ENFJ.setBaseStats(4, 12, 10, 2, 14, 6, 16, 8);
  59.         ENFJ.showStats();
  60.         break;
  61.     case 7:
  62.         MBTI_Type ISFP = new MBTI_Type();
  63.         ISFP.setBaseStats(6, 14, 2, 10, 12, 4, 16, 8);
  64.         ISFP.showStats();
  65.         break;
  66.     case 8:
  67.         MBTI_Type INFP = new MBTI_Type();
  68.         INFP.setBaseStats(12, 4, 2, 10, 6, 14, 16, 8);
  69.         INFP.showStats();
  70.         break;
  71.     case 9:
  72.         MBTI_Type ESTP = new MBTI_Type();
  73.         ESTP.setBaseStats(8, 16, 14, 6, 10, 2, 4, 12);
  74.         ESTP.showStats();
  75.         break;
  76.     case 10:
  77.         MBTI_Type ESFP = new MBTI_Type();
  78.         ESFP.setBaseStats(8, 16, 4, 12, 10, 2, 14, 6);
  79.         ESFP.showStats();
  80.         break;
  81.     case 11:
  82.         MBTI_Type ISTJ = new MBTI_Type();
  83.         ISTJ.setBaseStats(16, 8, 6, 14, 2, 10, 12, 4);
  84.         ISTJ.showStats();
  85.         break;
  86.     case 12:
  87.         MBTI_Type ISFJ = new MBTI_Type();
  88.         ISFJ.setBaseStats(16, 8, 12, 4, 2, 10, 6, 14);
  89.         ISFJ.showStats();
  90.         break;
  91.     case 13:
  92.         MBTI_Type ENTP = new MBTI_Type();
  93.         ENTP.setBaseStats(10, 2, 14, 6, 8, 16, 4, 12);
  94.         ENTP.showStats();
  95.         break;
  96.     case 14:
  97.         MBTI_Type ENFP = new MBTI_Type();
  98.         ENFP.setBaseStats(10, 2, 4, 12, 8, 16, 14, 6);
  99.         ENFP.showStats();
  100.         break;
  101.     case 15:
  102.         MBTI_Type INTJ = new MBTI_Type();
  103.         INTJ.setBaseStats(2, 10, 6, 14, 16, 8, 12, 4);
  104.         INTJ.showStats();
  105.         break;
  106.     case 16:
  107.         MBTI_Type INFJ = new MBTI_Type();
  108.         INFJ.setBaseStats(2, 10, 12, 4, 16, 8, 14, 6);
  109.         INFJ.showStats();
  110.         break;
  111.     }
  113. }
  115. }
JavaeclipseClassinitializationswitch-statement

4条答案

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uujelgoq

uujelgoq1#

问题似乎出在 setMinorStats 方法。从实现来看，它似乎在计算一些值。但是，这些值没有设置到对象（即没有 this.something = value 工作分配）。
该方法修改了传递的参数的值，但是不会因为java的存在而改变实际值 pass by value . 我建议看一下这些例子。

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ut6juiuv

ut6juiuv2#

作为调试时的一般原则，请输入一个默认值，然后查看是否出现该值，这样您就知道您的程序是否根本没有到达开关，或者只是无法识别任何值（如果有）。

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yjghlzjz

yjghlzjz3#

问题是，你从来没有真正设置任何属性，你打印（生命力，耐用性等）。
你的意思是在setminorstats（）中设置它们吗？
在setminorstats（）方法的if语句中，添加这样的内容 this.Vitality = Major; 如果用下面我的方法替换您的方法，并在第一种情况下使用键盘输入1运行，您将看到vitality在输出时设置为8。

  1. public void setMinorStats(double A, double B, double Major, double MinorA, double MinorB)
  2.   {
  3.       Major = (A + B)/2;
  4.       if(A > B)
  5.       {
  6.           MinorA = (Major) - 1;
  7.           MinorB = (Major) + 1;
  9.           /*
  10.            * Here is what you need to do-- set your fields based on your logic
  11.            */
  12.           this.Vitality = (int)Major;
  13.       }
  14.       if(B > A)
  15.       {
  16.           MinorA = (Major) + 1;
  17.           MinorB = (Major) - 1;
  18.       }
  19.   }
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sulc1iza

sulc1iza4#

这是我的问题的一个解决方案，我简单地将我的方法分为三个其他方法，并使它们具有返回语句，如下所示。

  1. public void setBaseStats(int introSen, int extroSen, int introThk, int extroThk, int introInuit, int extroInuit, int introFel, int extroFel)
  2. {
  3.     Se = extroSen;
  4.     Si = introSen;
  5.     Ne = extroInuit;
  6.     Ni = introInuit;
  7.     Te = extroThk;
  8.     Ti = introThk;
  9.     Fe = extroFel;
  10.     Fi = introFel;
  11.     setMajorStats();
  12. }
  13. public void setMajorStats()
  14. {
  15.     Vitality = setMinorStats(Te, Si);
  16.     Durability = setMinorStatsA(Vitality, Te, Si);
  17.     Strength = setMinorStatsB(Vitality, Te, Si);
  18.     Ambition = setMinorStats(Te, Ni);
  19.     Insight = setMinorStatsA(Ambition, Te, Ni);
  20.     Foresight = setMinorStatsB(Ambition, Te, Ni);
  21.     Tact = setMinorStats(Fe, Si);
  22.     Loyalty = setMinorStatsA(Tact, Fe, Si);
  23.     Friendliness = setMinorStatsB(Tact, Fe, Si);
  24.     Humanity = setMinorStats(Fe, Ni);
  25.     Revelation = setMinorStatsA(Humanity, Fe, Ni);
  26.     Charisma = setMinorStatsB(Humanity, Fe, Ni);
  27.     Dexterity = setMinorStats(Ti, Se);
  28.     Evasion = setMinorStatsA(Dexterity, Ti, Se);
  29.     Accuracy = setMinorStatsB(Dexterity, Ti, Se);
  30.     Intelligence = setMinorStats(Ti, Ne);
  31.     Curiousity = setMinorStatsA(Intelligence, Ti, Ne);
  32.     Analysis =setMinorStatsB(Intelligence, Ti, Ne);
  33.     Agility = setMinorStats(Fi, Se);
  34.     Zest = setMinorStatsA(Agility, Fi, Se);
  35.     Grace = setMinorStatsB(Agility, Fi, Se);
  36.     Idealism = setMinorStats(Fi, Ne);
  37.     Enthusiasm = setMinorStatsA(Idealism, Fi, Ne);
  38.     Conviction = setMinorStatsB(Idealism, Fi, Ne);
  39. }
  40. public int setMinorStats(int A, int B)
  41. {
  42.     int Major = (A + B)/2;
  43.     return Major;
  44. }
  45. public int setMinorStatsA(int Major, int A, int B)
  46. {
  47.     int MinorA = 0;
  48.     if(A > B)
  49.         MinorA = (Major) - 1;
  50.     if(B > A)
  51.         MinorA = (Major) + 1;
  52.     return MinorA;
  53. }
  54. public int setMinorStatsB(int Major, int A, int B)
  55. {
  56.     int MinorB = 0;
  57.     if(A > B)
  58.         MinorB = (Major) + 1;
  59.     if(B > A)
  60.         MinorB = (Major) - 1;
  61.     return MinorB;
  62. }
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