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    1. Using the ArrayList Constructor Import java.util.ArrayList. Create a new ArrayList instance using new ArrayList<>(). Add elements to the list using the add() method.

    2. Using Arrays.asList() Import java.util.Arrays. Use Arrays.asList() to create a fixed-size list from an array. For a mutable list, wrap it with new ArrayList<>(Arrays.asList(...)).

    3. Using Collections.addAll() Import java.util.Collections. Create an empty list using new ArrayList<>(). Use Collections.addAll() to add multiple elements at once.

    4. Using Stream.of() (Java 8 and above) Import java.util.stream.Stream and java.util.stream.Collectors. Use Stream.of(...).collect(Collectors.toList()) to create a list from elements.

    5. Using List.of() (Java 9 and above) Import java.util.List. Use List.of(...) to create an immutable list directly.

    6. Using Double-Brace Initialization Create an anonymous inner class extending ArrayList. Use an initializer block to add elements. (Note: This is considered an anti-pattern due to potential memory leaks).

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    1 -geeksforgeeks.org2 -baeldung.com3 -freecodecamp.org
    How do I initialize a variable in JavaScript?

    Initialize Variables: Declare a variable to store the decimal number and an array to hold the binary equivalent. Input Decimal Number: Use the scanf() function to take the decimal number as input from the user.

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    Baeldung
    https://www.baeldung.com/java-init-list-one-line
    Java List Initialization in One Line - Baeldung
  1. GeeksForGeeks
    https://www.geeksforgeeks.org › java › initializing-a-list-in-java

    Initializing a List in Java - GeeksforGeeks

    Oct 11, 2025 · Ways to Initialize a List in Java. 1. Using ArrayList Constructor. The most common way to create and initialize a List is by using the ArrayList class. 2. Using Arrays.asList () We can quickly …

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  2. Baeldung
    https://www.baeldung.com › java-init-list-one-line

    Java List Initialization in One Line - Baeldung

    • We can easily convert a Stream into any kind of Collection. Therefore, with the factory methods for Streams, we can create and initialize lists in one line: We should note here that Collectors.toList() doesn’t guarantee the exact implementation of the returned List. There’s no general contract about the mutability, serializability or thread safety ...
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    • Published: Aug 15, 2018
    • FreeCodecamp
      https://www.freecodecamp.org › news › how-to-initialize-a-java-list

      How to Initialize a Java List – List of String Initialization in Java

      Apr 14, 2023 · Learn different ways to initialize a list in Java, such as using constructors, add() method, Arrays.asList() method, and Stream.of() method. See examples and explanations for each method …

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    • HowToDoInJava
      https://howtodoinjava.com › java › collections › arraylist › i…

      Java One-Line List Initialization: List.of, Arrays.asList …

      Dec 20, 2025 · In Java, a List can be initialized in various ways from older techniques like Arrays.asList() to modern features like List.of(). This tutorial will …

    • javaspring.net
      https://www.javaspring.net › blog › initializing-list-java

      Initializing Lists in Java: A Comprehensive Guide

      Nov 12, 2025 · Whether you're a beginner learning the basics or an experienced developer looking for best practices, this blog post will cover everything you need to know about initializing lists in Java.

    • WikiHow
      https://www.wikihow.com › Initialize-a-List-in-Java

      How to Initialize a List in Java: 7 Step-by-Step Methods

      Jan 3, 2024 · In this article, we will cover 7 ways to initialize a list (or an array that looks like a list) in Java. You cannot add to a List, but you can create an array …

    • JavaBeat
      https://javabeat.net › initialize-list-in-java

      How to Initialize a List in Java - JavaBeat

      Jul 31, 2023 · How to Initialize a List in Java? To initialize a list in Java, apply the following approaches: “ Arrays.asList () ” Method. “ List.add () ” Method. “ Collections ” Class Methods. “ Stream ” Approach. “ …

    • expertbeacon.com
      https://expertbeacon.com › how-to-initialize-a-java-list-list-of-string...

      How to Initialize a Java List – List of String Initialization in Java

      Aug 25, 2024 · In this comprehensive guide, you‘ll learn several methods to initialize both array-based Lists (like ArrayList) and linked Lists in Java through practical code examples. Why Initialize a Java …

    • TutorialsPoint
      https://www.tutorialspoint.com › java-program-to-initialize-a-list

      Java Program to Initialize a List - Online Tutorials Library

      In this article, we will learn to initialize a list in Java. A list is an ordered collection that allows us to store and access elements sequentially. It contains index-based methods to insert, update, delete, and …

    • bootcamptoprod.com
      https://bootcamptoprod.com › java-list-initialization

      Java List Initialization: Easy Methods with Examples

      Dec 22, 2024 · Learn how to initialize a list in Java using various methods like Arrays.asList, List.of, ArrayList constructor, and Stream API. Compare the …