I have a function \"getStudent()\" that returns an ArrayList of strings and when i call this function in another class, i get a NullPointerException, i thought i had correctly initialized my List.
I am trying to create an autoc开发者_高级运维omplete text box based on an ArrayList from my main page\'s cs.
I have an Arraylist of Arraylist< String>\'s and I am trying to access a string value. Say I wanted to access the third String in the second ArrayList in my jsp f开发者_JS百科ile, but I wanted to d
What does it mean when we say an ArrayList is not synchronized? Does it mean that if we declare an ArrayList in object scope, multiple threads accessing the objects have the opportun开发者_运维技巧i
Is using an arraylist of Tuple(double,int,int) slower than three separate arraylists? I want to avoid creating lots of Tuple objects, bu开发者_如何学Pythont does method 2 create objects by autoboxing?
I have tried all day to do this and haven\'t had any luck. I have an ArrayList with an Array of Coordinate types inside, and I want to pass this from one activity to another. I don\'t think this is po
I am having a problem in trying to pass a ArrayList Object from Activity to Activity. Currently I am parsing a XML response using SAX Parser. The information I parse goes into a ArrayList. The informa
I Know I can use Generics while defining the ArrayList to do that. But here the case is different. I have a ArrayList, which when defined accepts any type of Objects. Once the user inserts the first
This question already has answers here: Closed 11 years ago. Possible Duplicate: Search for a regexp in a java arraylist
I\'m trying to surf an ArrayList of 24 positions. I\'m doing that using 2 indexes in a cicle for. The r is incremented (r+=4)every time i call the onClickListener() method by clicking a button. So i p
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