How to Create an ArrayList and Add Elements to It


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This example demonstrates how to create ArrayList and add new elements to it.

Create an ArrayList and Adding New Elements to It

  • How to create an ArrayList using the ArrayList() constructor.
  • Add new elements to an ArrayList using the add() method.
import java.util.ArrayList;
import java.util.List;

public class CreateArrayListExample {

    public static void main(String[] args) {
        // Creating an ArrayList of String
        List<String> animals = new ArrayList<>();

        // Adding new elements to the ArrayList
        animals.add("Lion");
        animals.add("Tiger");
        animals.add("Cat");
        animals.add("Dog");

        System.out.println(animals);

        // Adding an element at a particular index in an ArrayList
        animals.add(2, "Elephant");

        System.out.println(animals);
    }
}

Output

[Lion, Tiger, Cat, Dog]
[Lion, Tiger, Elephant, Cat, Dog]

Reference

Java ArrayList Source Code Examples

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