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 · As of java 8, Collectors.toList() will return an ArrayList. However this may differ in future versions on java.If you want a specific type of collection then use …

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 …

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 …

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 …

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

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?

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 …

Add multiple items to an already initialized arraylist in Java Asked 12 years, 9 months ago Modified 3 years, 6 months ago Viewed 219k times

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