Stack clone() method in Java with Example Last Updated : 10 Mar, 2024 Comments Improve Suggest changes Like Article Like Report The clone() method of Stack class is used to return a shallow copy of this Stack. It just creates a copy of the Stack. The copy will have a reference to a clone of the internal data array but not a reference to the original internal data array. Syntax: Stack.clone()Parameters: The method does not take any parameter. Return Value: The method returns an Object which is just the copy of the Stack. Exception: This method throws CloneNotSupportedException if the object's class does not support the Cloneable interface. Below programs illustrate the Java.util.Stack.clone() method: Program 1: Java// Java code to illustrate clone() import java.util.*; // Driver Class public class StackDemo { // Main Method public static void main(String args[]) { // Creating an empty Stack Stack<String> stack = new Stack<String>(); // Use add() method to add elements into the Stack stack.add("Welcome"); stack.add("To"); stack.add("Geeks"); stack.add("4"); stack.add("Geeks"); // Displaying the Stack System.out.println("Stack: " + stack); // Creating another Stack to copy Object copy_Stack = stack.clone(); // Displaying the copy of Stack System.out.println("The cloned Stack is: " + copy_Stack); } } [tabbyending] OutputStack: [Welcome, To, Geeks, 4, Geeks] The cloned Stack is: [Welcome, To, Geeks, 4, Geeks]Program 2: Java// Java code to illustrate clone() import java.util.*; // Driver Class public class StackDemo { // Main Method public static void main(String args[]) { // Creating an empty Stack Stack<Integer> stack = new Stack<Integer>(); // Use add() method to add elements into the Queue stack.add(10); stack.add(15); stack.add(30); stack.add(20); stack.add(5); // Displaying the Stack System.out.println("Stack: " + stack); // Creating another Stack to copy Object copy_Stack = (Stack)stack.clone(); // Displaying the copy of Stack System.out.println("The cloned Stack is: " + copy_Stack); } } [tabbyending] OutputStack: [10, 15, 30, 20, 5] The cloned Stack is: [10, 15, 30, 20, 5] Comment More infoAdvertise with us Next Article Stack clone() 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 lastIndexOf(Object, int) method in Java with Example The Java.util.Stack.lastIndexOf(Object element, int last_index) method is used to the last index of the first occurrence of the specified element in this Stack, searching forwards from last index, or returns -1 if the element is not found. More formally, returns the lowest last index i such that (i 3 min read Stack toString() method in Java with Example The toString() method of Java Stack is used to return a string representation of the elements of the Collection. The String representation comprises a set representation of the elements of the Collection in the order they are picked by the iterator closed in square brackets[].This method is used mai 2 min read Stack size() method in Java with Example The Java.util.Stack.size() method in Java is used to get the size of the Stack or the number of elements present in the Stack. Syntax: Stack.size() Parameters: The method does not take any parameter. Return Value: The method returns the size or the number of elements present in the Stack. Below prog 2 min read Stack capacity() method in Java with Example The capacity() method of Stack Class is used to get the capacity of this Stack. That is the number of elements present in this stack container. 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