为什么我收到堆栈溢出？

Question

我的第一个代码块是我的项目对象文件；第二个是主要 Class。在代码运行没有任何问题之前，但是在我添加了读写文件之后，我的代码开始收到堆栈流错误。只是调用错误的片段。

    public class Item implements java.io.Serializable {

    public static String name;
    public static double price;
    public static double amount;
    public int max = 1;
    SlayerProgram sp = new SlayerProgram();
    ReadFile rf = new ReadFile();
    public Item(String name, double price,double amount )
    {
    this.name = name;
    this.price = price;
    this.amount = amount;

    }

    public void ItemSet(String name, double price,double amount)
    {
    this.name = name;
    this.price = price;
    this.amount = amount  
    }

我的主class:

    public class SlayerProgram {
//import file txts, and Item Class

        static String name;
        static double price;
        static double amount;
 Item item = new Item(name,price,amount);
ReadFile rf = new ReadFile();
static String fileNameText = "D:\Game\SlayerProgram\Name.txt";
static String filePriceInt = "D:\Game\SlayerProgram\Price.txt";
static String fileAmountInt ="D:\Game\SlayerProgram\Amount.txt";

   //begin file Read   

public void BeginText() throws IOException
{
    TextFile();
}

public void Max()
{
    item.Max();
}

    //declare needed Data Types;
        final int max = item.max;
        ArrayList<String> Name  = new ArrayList<>();
        ArrayList<Double> Price = new ArrayList<>();
        double size = Price.size();
        ArrayList<Double> Amount = new ArrayList<>();


Exception in thread "main" java.lang.WhosebugError
at slayerprogram.Item.<init>(Item.java:18)
at slayerprogram.SlayerProgram.<init>(SlayerProgram.java:25)
at slayerprogram.Item.<init>(Item.java:18)
at slayerprogram.SlayerProgram.<init>(SlayerProgram.java:25)

如何找到导致堆栈溢出的位置？

Answer 1

Item 创建 SlayerProgram:

SlayerProgram sp = new SlayerProgram();

并且 SlayerProgram 创建 Item

Item item = new Item(name,price,amount);

因此在初始化时您将无休止地创建这些对象

有一个类似的 Baeldung example 用于获取 WhosebugError

This ends up with a WhosebugError since the constructor of ClassOne is instantiating ClassTwo, and the constructor of ClassTwo again is instantiating ClassOne.

Answer 2

因为 Item 和 SlayerProgram class 之间存在 circular 依赖关系。您在 class SlayerProgram 中创建了 Item item = new Item(name,price,amount);，在 class Item 中创建了 SlayerProgram sp = new SlayerProgram();。因此，当您尝试创建 Item 的对象时，它会尝试创建 SlayerProgram 的对象，然后 SlayerProgram 尝试创建 Item 的对象，它仍在继续method stack is not full 并导致 Whosebug.

为什么我收到堆栈溢出？

Why am I receiving a stack overflow?

java

stack-overflow