Jun 17, 2009 · * Implementation detail: It's a private nested class inside java.util.Arrays, named ArrayList, which is a different class from java.util.ArrayList, even though their simple names …

For example, here are the constructors of the ArrayList class: ArrayList() Constructs an empty list with an initial capacity of ten. ArrayList(Collection<? extends E> c) (*) Constructs a list …

Jul 7, 2009 · That's not quite true. If you have a class MyArray which extends ArrayList<Integer>, then you do have the type info at runtime. Also, it is possibly to instantiate an object at runtime …

You can instantiate ArrayList like so: new ArrayList<myclass>() {{ add(new MyClass("Name", "Address", age)); }}; This creates an anonymous inner class that actually extends ArrayList , …

Oct 2, 2018 · new ArrayList<T>() can no less be instantiated than new ArrayList<String>()-- both compile to the same bytecode and both just instantiate an ArrayList object at runtime. 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 …

Jun 6, 2013 · In Java, List is an interface. That is, it cannot be instantiated directly. Instead you can use ArrayList which is an implementation of that interface that uses an array as its backing …

Feb 22, 2018 · Java - ArrayList and creating an object. 1. Declaring an ArrayList ... Instantiate ArrayList inside class ...

Nov 2, 2015 · I just want to know why we initialize object of a parent class and instantiate it with the child class instead of directly instantiating child class object. Sample : List<String> …

The list returned by Arrays.asList() is NOT unmodifiable, @kocko. It has a fixed size, but you can change the references to point to entirely different objects like Arrays.asList(...).set(0,new …