Java ArrayList IndexOutOfBoundsException索引：1，大小：1 [英] Java ArrayList IndexOutOfBoundsException Index: 1, Size: 1

问题描述

我正在尝试用Java读取某个文件并将其转换为多维数组。每当我从脚本中读取一行代码时，控制台都会说：

I'm attempting to read a certain file in Java and make it into a multidimensional array. Whenever I read a line of code from the script, The console says:

Caused by: java.lang.IndexOutOfBoundsException: Index: 1, Size: 1

我知道这个错误是在编码无法达到具体目的时引起的索引，但我现在还不知道如何修复它。

I know that this error is caused when the coding can't reach the specific index, but I have no idea how to fix it at the moment.

这是我编码的一个例子。

Here is an example of my coding.

int x = 1;
while (scanner.hasNextLine()) {
  String line = scanner.nextLine();
  //Explode string line
  String[] Guild = line.split("\\|");
  //Add that value to the guilds array
  for (int i = 0; i < Guild.length; i++) {
    ((ArrayList)guildsArray.get(x)).add(Guild[i]);
    if(sender.getName().equals(Guild[1])) {
      //The person is the owner of Guild[0]
      ownerOfGuild = Guild[0];
    }
  }
  x++;
}

**文本文件**

Test|baseman101|baseman101|0|
Test2|Player2|Player2|0|

其他解决方案，例如：写入文本文件而不用Java覆盖

Other solutions, such as the one found here: Write to text file without overwriting in Java

在此先感谢。

推荐答案

问题1 - > int x = 1;

解决方案：x应该从0开始

problem 1 -> int x = 1;
solution: The x should be start with 0

问题2->

((ArrayList)guildsArray.get(x)).add(Guild[i]);

您正在增加 x 所以 if x> = guildsArray.size（）然后你会得到 java.lang.IndexOutOfBoundsException

You are increasing x so if x >= guildsArray.size() then you will get java.lang.IndexOutOfBoundsException

解决方案

if( x >= guildsArray.size())
      guildsArray.add(new ArrayList());
for (int i = 0; i < Guild.length; i++) {
    ((ArrayList)guildsArray.get(x)).add(Guild[i]);
    if(sender.getName().equals(Guild[1])) {
      //The person is the owner of Guild[0]
      ownerOfGuild = Guild[0];
    }
  }

这篇关于Java ArrayList IndexOutOfBoundsException索引：1，大小：1的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！