java - 类构造函数中的ArrayIndexOutOfBounds

public class Environment {
    //variables
    RoundingStage[][] land;
    int horizontalStreets;
    int verticalStreets;

   public Environment(RoundingStage[][] grid) {
       this.horizontalStreets = grid.length;
       this.verticalStreets = grid[0].length;
       land = new RoundingStage[horizontalStreets][verticalStreets];

       for (int i = 0 ; i <= horizontalStreets ; i++)
           for (int j = 0 ; j <= verticalStreets ; j++)
               land[i][j] = grid[i][j];
    }
   public Environment(Environment env) {
        this.horizontalStreets = env.horizontalStreets;
        this.verticalStreets = env.verticalStreets;
        land = new RoundingStage[horizontalStreets][verticalStreets];

        for (int i = 0 ; i <= horizontalStreets ; i++)
            for (int j=0 ; j <= verticalStreets ; j++)
                land[i][j] = env.land[i][j];
    }

有人可以告诉我为什么我使用此功能时会得到ArrayOutOfBound吗？我已经尝试过+ 1，-1的每种组合，请给我一些帮助：D

public RoundingStage valueInPosition(int rHor, int rVer) {
    return land[rHor-1][rVer-1];
    }

最佳答案

实际上，您应该在那些构造函数中摆脱限制。那些使用i和j作为迭代器的嵌套循环应该一直循环到i < horizontalStreets和j <verticalStreets，而不是当前发布的<=。 Java数组索引基于0。