It is possible that future versions of the Java programming language will disallow the use of raw types. Effective Java 2nd Edition: Item 23: Don't use raw types in new code. If you use raw …

Oct 19, 2009 · It's better to use an ArrayList if you don't know, in advance, how many elements there are going to be. The ArrayList correctly amortizes the cost of growing the backing array …

On the other hand, insertion and deletion in a LinkedList are much easier because you just have to change the pointers whereas an ArrayList implies the use of shift operation for any insertion …

May 12, 2014 · Thus, performance issue using ArrayList compared to Object[] is not so tough, the case cast to the appropriate type still costs a few clocks (but it should be 99.99% of the times …

Mar 6, 2010 · So, as a previous responder said, you really need to consider how you're going to use it. For example, if you're creating "large" data structures, then ArrayList can get pretty …

I have an ArrayList of record ids that are type Long-> ArrayList<Long>. I would like to use this list of record ids to select rows from another table. So far so good. Now onto the challenge... a) I …

May 7, 2012 · First of all, for initializing a container you cannot use a primitive type (i.e. int; you can use int[] but as you want just an array of integers, I see no use in that). Instead, you …

May 9, 2013 · Hello I'm a beginner in Java and this is my question: I have this first class with the following variables: import java.util.ArrayList; public class numbers { private int number1 = 50; …

Apr 21, 2012 · ArrayList get(int index) method is used for fetching an element from the list. We need to specify the index while calling get method and it returns the value present at the …

Apr 20, 2009 · I'd advise using Map<Lecturer, List<Course>>, as someone replied in the previous question, which means, "an association (Map) between different lecturers (Lecturer) to a list of …