The problem
If you have a traditional array, that looks something like the following:
A[] array = {new A(1), new A(2), new A(3)};
And you would like to convert this to an ArrayList:
ArrayList<Element> arraylist = ???;
..then you can do the following!
The solution
The technique
new ArrayList<>(Arrays.asList(array));
How to use it
Of course you could always simplify this one further directly as:
List<ClassName> list = Arrays.asList(array)
How to old Java
If you are stuck in the old world of Java, you can fall back to:
List<ClassName> list = new ArrayList<ClassName>(Arrays.asList(array));
