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javaarrayslistarraylistindexoutofboundsexception

IndexOutOfBoundException while adding in queueList

private void removeQueue(Queue queue)
    {
        queue.setTodoDeleted(false);
        if ( queueIndex != -1) {
            this.queueList.add(queueIndex , queue);
            mItemManger.closeAllItems();
        }
    }

where queueList is ArrayList of queue ArrayList queuelist.

Problem : Index is 2 and list size is 1 while adding in the queueList so, IndexOutOfBoundException throws at Line
this.queueList.add(queueIndex , queue).

What is the best way to avoid this? In Advanced, thanks

Solution

  • To avoid IndexOutOfBounds issue , Check the actual size and index that you are going to use before performing the operation.

    if ( queueList.size()>queueIndex)
{
   this.queueList.add(queueIndex , queue);
}
// Add else part if needed