Aug 12, 2010 · ArrayList uses an Array of Object to store the data internally. When you initialize an ArrayList, an array of size 10 (default capacity) is created and an element added to the …

Oct 1, 2008 · Note that the returned type for asList() is a List using a concrete ArrayList implementation, but it is NOT java.util.ArrayList. It's an inner type, which emulates an ArrayList …

References API: Java Collections Framework tutorial class ArrayList<E> implements List<E> interface List<E> E get(int index) Returns the element at the specified position in this list. Don't …

Oct 28, 2010 · How might I convert an ArrayList<String> object to a String [] array in Java?

The instruction for new ArrayList(inner) creates a new ArrayList with the contents of inner inside of it - but doesn't use the same instance as inner. Thus, you'll retain the content, but not retain …

I am wanting to create an array of arraylist like below: ArrayList<Individual> [] group = new ArrayList<Individual> () [4]; But it's not compiling. How can I do this?

Jun 6, 2010 · What are the differences between the two data structures ArrayList and Vector, and where should you use each of them?

May 7, 2012 · System.out.println("Arraylist contains: " + arl.toString()); If you want to access the i element, where i is an index from 0 to the length of the array-1, you can do a :

Oct 23, 2013 · @InsaneCoder Yes, it returns an ArrayList (of Integers). Whether or not you need a temporary ArrayList or not depends on what you want to do with it. You can call ee.getValue …

List<String> names = new ArrayList<>(); I use the interface as the type name for portability, so that when I ask questions such as this, I can rework my code. When should LinkedList be …