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 …

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 …

The Guava library contains convenience methods for creating lists and other collections which makes this much prettier than using the standard library classes. Example: ArrayList<String> …

Oct 20, 2010 · If you want to allow a user to add a bunch of new MyObjects to the list, you can do it with a for loop: Let's say I'm creating an ArrayList of Rectangle objects, and each Rectangle …

Java 8. In order to create a non-empty list of fixed size where different operations like add, remove, etc won't be supported: List<Integer> fixesSizeList= Arrays.asList(1, 2); Non-empty …

Nov 25, 2015 · public class MyMatrix<T> { private ArrayList<ArrayList<T>> data; public MyMatrix() { data = new ArrayList<ArrayList<>>(); } // add methods like the ones below, …

Jul 8, 2013 · I have seen the question: Create ArrayList from array However when I try that solution with following code, it doesn't quite work in all the cases: import java.util.ArrayList; …

May 13, 2009 · In case we are using Java 9 then: List<String> list = List.of("A", "B"); Java 10. In case we are at Java 10 then the method Collectors.unmodifiableList will return an instance of …

Jan 17, 2012 · Capacity of an ArrayList isn't the same as its size. Size is equal to the number of elements contained in the ArrayList (and any other List implementation). The capacity is just …

Mar 8, 2016 · import java.util.ArrayList; public class MyArrayList<E> extends ArrayList<E>{ private static final long serialVersionUID = -5164702379587769464L; public void …