The java.util.ArrayList.add(E e) method appends the specified element E to the end of the list.
ArrayList add() method is used to add an element in the list. We can add elements of any type in ArrayList, but make the program behave in a more predictable manner, we should add elements of one certain type only in any given list instance.
The following example shows the usage of java.util.ArrayList.add(E) method:
Let us compile and run the above program, this will produce the following result −
The following example shows the usage of java.util.ArrayList.add(E) method:
import java.util.ArrayList;
import java.util.List;
// How to create an ArrayList using the ArrayList() constructor.
// Add new elements to an ArrayList using the add() method.
public class CreateArrayListExample {
public static void main(String[] args) {
// Creating an ArrayList of String using
List<String> fruits = new ArrayList<>();
// Adding new elements to the ArrayList
fruits.add("Banana");
fruits.add("Apple");
fruits.add("mango");
fruits.add("orange");
System.out.println(fruits);
}
}
[Banana, Apple, mango, orange]
Java ArrayList add() Method Example - Insert element in specific position
import java.util.ArrayList; public class ArrayListDemo { public static void main(String[] args) { // create an empty array list with an initial capacity ArrayList<Integer> arrlist = new ArrayList<Integer>(5); // use add() method to add elements in the list arrlist.add(15); arrlist.add(22); arrlist.add(30); arrlist.add(40); // adding element 25 at third position arrlist.add(2,25); // let us print all the elements available in list for (Integer number : arrlist) { System.out.println("Number = " + number); } } }Let us compile and run the above program, this will produce the following result −
Number = 15 Number = 22 Number = 25 Number = 30 Number = 40
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