I have a heavily populated arraylist, which I want to clear and reuse. If I clear it will it free up that previously used memory?
Following is the format of the data stored in my arraylist. A-Amsterdam B- Brussels C-Canada so and so forth.
which one is more memory efficient? which one works faster with 1000000 items? is there anyth开发者_如何学JAVAing better?A List<T> is generally preferable to using an ArrayList because it is a t
I have 2 questions: 1- We all know that can create an array list full of some employee objects and bind a datagridview to it.
i have an arraylist of objects, each containing a year/month/day/hour property. what i\'m ultimately trying to do, is create a new multidimensional array that contains a group of every object by incre
I have a ArrayList containing Attributes class Attribute{ private int id; public string getID(){ return this.id;
My code is as follows: private static ArrayList<String[]> file; ... void method() { file = new ArrayList<String[]>();
In Java I want to convert a nested List which contains at the deepest level a uniform type into an multidimensional array of that type. For example, ArrayList<ArrayList<ArrayList<ArrayList<
My question is abou开发者_StackOverflow中文版t how I add an object to an array, in my case I have an array class with 4 columns and I cant get my program to add an object to the array.
I have two arraylists. One contains filenames and the other contains failurecount. These values are from database tables in the code behind.
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