I get an arrayList of orders from a DB query and then iterate through to pull out order numbers which I then put into a arrayList, which I then want to convert to a List to use in cellList. Can …

You can cast List<> to ArrayList<> if you understand what you doing. Java compiler won't block it. But: It's bad practice to casting parent type to child type (or interface to implementation type) …

Mar 18, 2019 · I have my Integer data in Array Lists of Arrays Lists and I want to convert that data to Lists of List format. How can I do it? ArrayList<ArrayList<Integer>> ansList = new …

Dec 24, 2024 · One of the most easy and effective ways to convert an array into a list in Java is by using the Arrays.asList() method. This method provides a fixed-size list backed by the …

Apr 1, 2025 · Q #1) How do you convert an ArrayList to an Array in Java? Answer: To convert an ArrayList to an Array in Java, one can use the toArray ( ) method from ArrayList API that …

Apr 4, 2025 · How to Convert between an Array and a List Using plain Java, Guava or Apache Commons Collections.

Sep 5, 2024 · Let's see a simple example to convert ArrayList to Array and Array to ArrayList in Java: public class LengthVsSizeArrayList { public static void main (String [...

Jan 24, 2018 · This tutorial analyzes the three most commonly used Array to List conversion options. 1.1 Using Arrays.asList() method to convert from an Array to a List. This is one of the …

Dec 8, 2024 · Learn how to convert array to list and list to array in Java with examples. Discover modifiability constraints and best practices.

Aug 7, 2021 · In this tutorial, we will learn how to convert an array to a list and a list back to an array. The asList () method of the Arrays class provides a simple method to convert an array …