Try this! List<String> x = new ArrayList<String>(Arrays.asList("xyz", "abc")); It's a good practice to declare the ArrayList with interface List if you don't have to invoke the specific methods.

Apr 7, 2025 · Below are the various methods to initialize an ArrayList in Java. 1. Initialization with add () Syntax: ArrayList<Type> al= new ArrayList<Type> (); al.add (“Geeks”); al.add (“for”); al.add (“Geeks”); Example 1: This example demonstrates how to …

Jun 17, 2009 · Usually you should just declare variables by the most general interface that you are going to use (e.g. Iterable, Collection, or List), and initialize them with the specific implementation (e.g. ArrayList, LinkedList or Arrays.asList()).

Feb 1, 2024 · There is a basic way to declare an ArrayList with values is by Adding elements one by one by using the add () method. Syntax: ArrayList<Integer> arrayList = new ArrayList<>();arrayList.add(1);arrayList.add(2); Below is the implementation of Declare an ArrayList with Values in Java:

Apr 21, 2023 · We saw how to declare and initialize an ArrayList with values. We also saw different methods for adding, accessing, changing, and removing elements in an ArrayList.

Jan 11, 2021 · We can use Arrays.asList() method and pass it to ArrayList’s constructor to initialize ArrayList with values in java. This approach is useful when we already have data …

Aug 25, 2024 · We can also initialize the ArrayList with values by using an initializer block: add("John"); add("Sarah"); . add("Mark"); This declarative approach initializes the ArrayList while populating it inline at the same time. The double curly braces define an instance initializer anonymous inner class.

But don't worry, there is a workaround to declare an ArrayList with values e.g. String, integers, floats, or doubles by using the Arrays.asList () method, which is nothing but a shortcut to convert an Array to ArrayList. This is how you declare an ArrayList of Integer values.

Dec 29, 2012 · Here is a Java program that creates and initializes List in one line using Array. The Arrays.asList () method is used to initialize List in one line and it takes an Array which you can create at the time of calling this method itself. It also uses Generics to provide type-safety and this example can be written using Generics as well.

Aug 4, 2023 · To initialize an ArrayList in a single line statement, get all elements from an array using Arrays.asList method and pass the array argument to ArrayList constructor.