Stack hashCode() method in Java with Example Last Updated : 24 Dec, 2018 Comments Improve Suggest changes Like Article Like Report The Java.util.Stack.hashCode() method in Java is used to get the hashcode value of this Stack. Syntax: Stack.hashCode() Parameters: The method does not take any parameter. Return Value: The method returns hash code value of this Stack which is of Integer type. Below programs illustrate the Java.util.Stack.hashCode() method: Program 1: Stack with string elements. Java // Java code to illustrate hashCode() 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 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); // Displaying the hashCode value of Stack System.out.println("The hashCode value is: " + stack.hashCode()); } } Output: Stack: [Welcome, To, Geeks, 4, Geeks] The hashCode value is: -878886256 Program 2: Stack with integer elements. Java // Java code to illustrate hashCode() 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 into the Stack stack.add(10); stack.add(20); stack.add(30); stack.add(40); stack.add(50); // Displaying the Stack System.out.println("Stack: " + stack); // Displaying the hashCode value of Stack System.out.println("The hashCode value is: " + stack.hashCode()); } } Output: Stack: [10, 20, 30, 40, 50] The hashCode value is: 38490301 Comment More infoAdvertise with us Next Article Stack hashCode() 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 remove(int) method in Java with Example The Java.util.Stack.remove(int index) method is used to remove an element from a Stack from a specific position or index. Syntax: Stack.remove(int index) Parameters: This method accepts a mandatory parameter index is of integer data type and specifies the position of the element to be removed from t 2 min read Stack removeAllElements() method in Java with Example The Java.util.Stack.removeAllElements() method is used to removes all components from this Stack and sets its size to zero. Syntax: Stack.removeAllElements() Parameters: The method does not take any parameter Return Value: The function does not returns any value. Below programs illustrate the Java.u 2 min read Stack remove(Object) method in Java with Example The Java.util.Stack.remove(Object o) method is used to remove any particular element from the Stack. Syntax: Stack.remove(Object o) Parameters: This method accepts a mandatory parameter o is of the object type of Stack and specifies the element to be removed from the Stack. 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The specified index indicates the first element that would be returned by an initial call to next. An initial call to pre 2 min read Stack trimToSize() method in Java with Example The trimToSize() method of Stack in Java trims the capacity of an Stack instance to be the list's current capacity. This method is used to trim an Stack instance to the number of elements it contains. Syntax: public void trimToSize() Parameter: It does not accepts any parameter. Return Value: It doe 2 min read 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. 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