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 …

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 …

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 …

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 …

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 …

ArrayList or List declaration in Java has questioned and answered how to declare an empty ArrayList but how do I declare an ArrayList with values? I've tried the following but it returns a syntax ...

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

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, …

Dec 15, 2011 · Removing on the basis of specified index position of arrayList. The best way to remove any item or object from arrayList. First, find the index of the item which you want to remove. Then call …

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