Stack add(int, Object) method in Java with Example Last Updated : 24 Dec, 2018 Comments Improve Suggest changes Like Article Like Report The add(int, Object) method of Stack Class inserts an element at a specified index in the Stack. It shifts the element currently at that position (if any) and any subsequent elements to the right (will change their indices by adding one). Syntax: void add(int index, Object element) Parameters: This method accepts two parameters as described below. index: The index at which the specified element is to be inserted. element: The element which is needed to be inserted. Return Value: This method does not return any value. Exception: The method throws IndexOutOfBoundsException if the specified index is out of range of the size of the Stack. Below program illustrates the working of java.util.Stack.add(int index, Object element) method: Example: Java // Java code to illustrate boolean add(Object element) import java.util.*; public class StackDemo { public static void main(String args[]) { // Creating an empty Stack Stack<String> stack = new Stack<String>(); // Use add() method to add elements in the Stack stack.add("Geeks"); stack.add("for"); stack.add("Geeks"); stack.add("10"); stack.add("20"); // Output the present Stack System.out.println("The Stack is: " + stack); // Adding new elements stack.add(2, "Last"); stack.add(4, "Element"); // Printing the new Stack System.out.println("The new Stack is: " + stack); } } Output: The Stack is: [Geeks, for, Geeks, 10, 20] The new Stack is: [Geeks, for, Last, Geeks, Element, 10, 20] Example 2: Java // Java code to illustrate // boolean add(Object element) import java.util.*; public class StackDemo { public static void main(String args[]) { // Creating an empty Stack Stack<Integer> stack = new Stack<Integer>(); // Use add() method // to add elements in the Stack stack.add(10); stack.add(20); stack.add(30); stack.add(40); stack.add(50); // Output the present Stack System.out.println("The Stack is: " + stack); // Adding new elements stack.add(0, 100); stack.add(3, 200); // Printing the new Stack System.out.println("The new Stack is: " + stack); } } Output: The Stack is: [10, 20, 30, 40, 50] The new Stack is: [100, 10, 20, 200, 30, 40, 50] Comment More infoAdvertise with us Next Article Stack add(int, Object) method in Java with Example C code_r Follow Improve Article Tags : Java Java-Collections Java - util package Java-Functions Java-Stack +1 More Practice Tags : JavaJava-Collections Similar Reads Stack indexOf() method in Java with Example The Java.util.Stack.indexOf(Object element) method is used to check and find the occurrence of a particular element in the Stack. 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