IntelliJ 变量可能尚未初始化

IntelliJ variable might not have been initialized

所以我想澄清的第一件事是,我认为这是我的错误,我只是没有看到,但我认为了解 IDE 是 IntelliJ 可能会有所帮助。此外,我一直在查看其他溢出帖子(question 1, final keyword, question 2 仅举几例),但据我所知他们还没有回答我的问题。我只学过AP计算机科学作为我在CS方面的教育,所以我的知识非常有限。

问题出在文件中的非 public class。它创建了一个通过二维数组的路径,它可以创建自己的实例以获得分支效果,但不是必须的。此外,该文件的多个版本将由文件中的 public class 创建。下面是我的代码(我认为相关的部分。如果您需要更多,请告诉我,我会更新我的问题)。如果您还有其他需要,请告诉我,谢谢您的帮助!

public class PathMaker
{
    ....
}

class RiverPath
{

    private final int startID;
    private final int endID;
    private final double branchChance;
    private final double endFactor;

    public RiverPath(int x, int y, int[][] alts, double bChance, int c, double eFactor, int pX, int pY)
    {
        startID = MapNode.createID(x, y);
        branchChance = bChance;
        endFactor = eFactor;

        ...
        endID = a number;
    }
    public RiverPath(int x, int y, int[][] alts, double bChance)
    {
        this(x, y, alts, bChance, 0, .02, -1, -1);
    }
    ...
}

没有其他的构造函数,MapNode是另一个class,带有public static int createID(int x, int y)方法。

让我知道我需要做什么来使我的问题更清楚。


编辑:所有 4 个变量都让我感到悲伤。另外,我将把完整的构造函数放在下面。据我所知,我的代码中没有 return 语句。另外,错误是在我编译之前说

Variable [name] might not have been initialized

只有这 4 个错误。在构造函数之外定义了一些变量。

public RiverPath(int x, int y, int[][] alts, double bChance, int c, double eFactor, int pX, int pY)
{
 count = c;

 if(c > 0)
    isBranch = true;
 else
    isBranch = false;//pX and pY only matter if is Branch

 startID = MapNode.createID(x, y);
 branchChance = bChance;
 altitudes = alts;
 endFactor = eFactor;

 mainPath.add(new MapNode(x, y, altitudes));

 boolean pathing = true;
 MapNode currentNode = mainPath.get(0);
 int[][] heights = new int[3][3];//heights around river
 boolean[][] heightTight = new boolean[3][3];
 int min;
 int minCount;
 int tID;
 RiverPath branch;

 while(pathing)
 {
    if(Math.random() < endFactor*count)
    {
       pathing = false;
    }
    else
    {
       count++;
       min = 99;
       minCount = 0;

       for(int i = -1; i < 2; i++)
       {//These loops fill heights with the nearby heights of mapnodes and set min as the min
          for(int z = -1; z < 2; z++)
          {
             heights[i+1][z+1] = altitudes[currentNode.getY() + i][currentNode.getX() + z];
             if(heights[i+1][z+1] < min)
             {
                min = heights[i + 1][z + 1];
             }
          }
       }

       if(min == currentNode.getAltitude())
       {
          min = 0;
          for(int i = -1; i < 2; i++)
          {
             for(int z = -1; z < 2; z++)
             {
                tID = MapNode.createID(currentNode.getX() + z, currentNode.getY() + i);
                if(heights[i+1][z+1] == currentNode.getAltitude() && (!isBranch || !(MapNode.createID(pX, pY) == tID)) && (mainPath.size() == 1 || mainPath.get(mainPath.size() - 1).getID() != tID))
                {//if the altitude is the min, and it either isn't a branch or it isn't the node before this one
                   heightTight[currentNode.getY()+i][currentNode.getX()+z] = true;//a possible path exists here
                   min++;//min now keeps track of the total number of possible paths there are
                   minCount++;//also keeps track of total, but for a different implementation later
                }
             }
          }
          while(min != 0)
          {
             if(min == -1)
                min = -2;//signals that we can test branches
             for (int i = -1; i < 2; i++)
             {
                for (int z = -1; z < 2; z++)
                {
                   if (min > 0 && heightTight[currentNode.getY() + i][currentNode.getX() + z] && Math.random() < 1.0/)//
                   {

                      if(min > 0)
                         min = -1;//signals that we can skip all other true values, but ONLY if there are more possible branches
                      else
                         min = 0;//in case we lower min below 0
                   }
                   else if(min == -2 && heightTight[currentNode.getY() + i][currentNode.getX() + z] && Math.random() < branchChance)//both random chance and it is a possible path
                   {
                      branch = new RiverPath(currentNode.getX() + z, currentNode.getY() + i, altitudes, branchChance, count, endFactor, currentNode.getX(), currentNode.getY());
                      branches.add(branch);
                   }
                }
             }
          }
       }
    }
 }

 endID = currentNode.getID();
}

根据您分享的代码片段,我猜您在构造函数中的 ... 某处有一个条件 return。由于你return早,endID可能没有设置。这是导致此错误的常见原因。


编辑:

使用你发布的更大的代码片段,我可以在 IntelliJ 中重现你的问题,并且我在这一行看到了一个额外的错误 "Expression expected":

if (min > 0 && heightTight[currentNode.getY() + i][currentNode.getX() + z] && Math.random() < 1.0 /)//

这(特别是 1.0 之后的尾随 /)似乎是您的真正问题 - "might not have been initialized" 错误只是构造函数格式错误的症状。