Java ArrayList IndexOutOfBoundsException 索引：1，大小：1
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Java ArrayList IndexOutOfBoundsException Index: 1, Size: 1
提问by baseman101
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:
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：
Caused by: java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
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.
我知道这个错误是在编码无法到达特定索引时引起的，但我目前不知道如何修复它。
Here is an example of my coding.
这是我的编码示例。
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++;
}
**Text Document **
**文本文件**
Test|baseman101|baseman101|0|
Test2|Player2|Player2|0|
Other solutions, such as the one found here: Write to text file without overwriting in Java
其他解决方案，例如此处找到的解决方案：Write to text file without overwriting in Java
Thanks in advance.
提前致谢。
采纳答案by Prabhakaran Ramaswamy
problem 1 -> int x = 1;
solution: The x should be start with 0
问题 1 ->int x = 1;
解决方案：x 应该从 0 开始
problem 2->
问题 2->
((ArrayList)guildsArray.get(x)).add(Guild[i]);
You are increasing xso if x >= guildsArray.size()then you will get java.lang.IndexOutOfBoundsException
你在增加， x所以if x >= guildsArray.size()你会得到java.lang.IndexOutOfBoundsException
solution
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];
}
}
回答by Bohemian
The problem is occurring here:
问题发生在这里：
... guildsArray.get(x) ...
but is caused here:
但是是在这里引起的：
int x = 1;
while (scanner.hasNextLine()) {
...
Because Collections and arrays are zero-based (the first element is index 0).
因为集合和数组是从零开始的（第一个元素是 index 0）。
Try this:
尝试这个：
int x = 0;
