ArrayList.add抛出ArrayIndexOutOfBoundsException

本文介绍了ArrayList.add抛出ArrayIndexOutOfBoundsException的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在尝试将一个对象添加到ArrayList并抛出ArrayIndexOutOfBoundsException 以下是代码

I am trying to add a object to a ArrayList and its throwing ArrayIndexOutOfBoundsException Following is the code

private void populateInboxResultHolder(List inboxErrors){ inboxList = new ArrayList(); try{ inboxHolder = new InboxResultHolder(); //Lots of Code inboxList.add(inboxHolder); }catch(Exception e){ e.printStackTrace(); } }

例外是

[3/7/12 15:41:26:715 UTC] 00000045 SystemErr R java.lang.ArrayIndexOutOfBoundsException [3/7/12 15:41:26:721 UTC] 00000045 SystemErr R at java.util.ArrayList.add(ArrayList.java:378) [3/7/12 15:41:26:721 UTC] 00000045 SystemErr R at com.ml.fusion.uimon.web.bean.inbox.InboxSearchBean.populateInboxResultHolder(InboxSearchBean.java:388) [3/7/12 15:41:26:721 UTC] 00000045 SystemErr R at com.ml.fusion.uimon.web.bean.inbox.InboxSearchBean.searchInboxErrors(InboxSearchBean.java:197) [3/7/12 15:41:26:721 UTC] 00000045 SystemErr R at com.ml.fusion.uimon.web.bean.inbox.InboxSearchBean.viewInbox(InboxSearchBean.java:207)

但是根据ArrayList.add的签名，它不应该抛出这个异常。 请帮忙。

But according to the signature of ArrayList.add it should not throw this exception. Please help.

推荐答案

ArrayList.add（）永远不要抛出 ArrayIndexOutOfBoundsException 如果正确使用，那么你似乎正在以一种方式使用你的 ArrayList 它不支持。

ArrayList.add() should never throw an ArrayIndexOutOfBoundsException if used "properly" so it seems that you're using your ArrayList in a way which it does not support.

很难从你发布的代码中判断出来但我的猜测是你正在访问你的 ArrayList 来自多个线程。

It's hard to tell from just the code you've posted but my guess is that you're accessing your ArrayList from multiple threads.

ArrayList 未同步，因此不是线程安全的。如果这是问题，您可以使用列表来修复它。 java / util / Collections.html＃synchronizedList％28java.util.List％29> Collections.synchronizedList（） 。

ArrayList isn't synchronised and so isn't thread safe. If this is the problem you can fix it by wrapping your List using Collections.synchronizedList().