Does ArrayList add?

Below are the add() methods of ArrayList in Java:

1. boolean add(Object o) : This method appends the specified element to the end of this list. Parameters: object o: The element to be appended to this list. Exception: NA

                                // Java code to illustrate add(Object o) import java.io.*; import java.util.ArrayList; public class ArrayListDemo { public static void main(String[] args) { // create an empty array list with an initial capacity ArrayList arrlist = new ArrayList(5); // use add() method to add elements in the list arrlist.add(15); arrlist.add(20); arrlist.add(25); // prints all the elements available in list for (Integer number : arrlist) { System.out.println("Number = " + number); } } }

Output:Number = 15 Number = 20 Number = 25

1. void add(int index, Object element) : This method inserts the specified element E at the specified position in this list.It shifts the element currently at that position (if any) and any subsequent elements to the right (will add one to their indices). Parameters:index : The index at which the specified element is to be inserted. element : The element to be inserted. Exception:Throws IndexOutOfBoundsException if the specified index is out of range (index  size()).

                                // Java code to illustrate // void add(int index, Object element) import java.io.*; import java.util.ArrayList; public class ArrayListDemo { public static void main(String[] args) { // create an empty array list with an initial capacity ArrayList arrlist = new ArrayList(5); // use add() method to add elements in the list arrlist.add(10); arrlist.add(22); arrlist.add(30); arrlist.add(40); // adding element 35 at fourth position arrlist.add(3, 35); // let us print all the elements available in list for (Integer number : arrlist) { System.out.println("Number = " + number); } } }

Output:Number = 10 Number = 22 Number = 30 Number = 35 Number = 40

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                       Article Tags :                    Java         Java - util packageJava-ArrayListJava-CollectionsJava-Functions Practice Tags : JavaJava-Collections

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