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 use raw types …

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 but actually directly …

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 ArrayList is …

Jun 17, 2009 · ArrayList<String> list = new ArrayList<String>() {{ add("A"); add("B"); add("C"); }}; However, I'm not too fond of that method because what you end up with is a subclass of ArrayList …

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 the …

Apr 27, 2013 · I have a List of Double objects in Java. I want to sort the ArrayList in descending order. Input ArrayList:

The ArrayList constructed by asList is not a java.util.ArrayList, only shares the same. In fact, it cannot be, as the return value of asList is specified to be a fixed size list, but an ArrayList must be of …

Say I have a car class with attributes make and registration, and i create an ArrayList to store them. How do I display all the elements in the ArrayList? I have this code right now: public Car ...

Add multiple items to an already initialized arraylist in Java Asked 12 years, 11 months ago Modified 3 years, 8 months ago Viewed 219k times

54 Better to use a HashSet than an ArrayList when you are checking for existence of a value. Java docs for HashSet says This class offers constant time performance for the basic operations (add, remove, …