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  1. 123

    The Stack class in Java is a part of the Java Collection Framework and represents a last-in-first-out (LIFO) stack of objects. It extends the Vector class and provides several methods to perform standard stack operations such as push, pop, peek, empty, and search.

    Key Methods of Stack Class

    1. push(E item)

    The push method adds an item to the top of the stack. This method is equivalent to the addElement method of the Vector class.

    Stack<Integer> stack = new Stack<>();
    stack.push(1);
    stack.push(2);
    System.out.println(stack); // Output: [1, 2]
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    2. pop()

    The pop method removes and returns the object at the top of the stack. If the stack is empty, it throws an EmptyStackException.

    int topElement = stack.pop();
    System.out.println(topElement); // Output: 2
    System.out.println(stack); // Output: [1]
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    3. peek()

    The peek method returns the object at the top of the stack without removing it. If the stack is empty, it throws an EmptyStackException.

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  2. oracle.com
    https://docs.oracle.com › javase › docs › api › java › util › Stack.html

    Stack (Java Platform SE 8 ) - Oracle

    The Stack class represents a last-in-first-out (LIFO) stack of objects. It extends class Vector with five operations that allow a vector to be treated as a stack.

    • Java™ Platform, Standard Edition 8 API Specification This document is the API …

    • Methods inherited from class java.lang. Throwable addSuppressed, …

    • The Stack class represents a last-in-first-out (LIFO) stack of objects. It extends class …

    • We would like to show you a description here but the site won’t allow us.

    • A generator of uniform pseudorandom values applicable for use in (among other …

    • Note that the peek method works equally well when a deque is used as a queue or …

    • The Java programming language does not guarantee which thread will invoke the …

    • This page provides a comprehensive list of all classes in the Java Platform SE 8 API …

    • The number of times this list has been structurally modified. Structural …

    • As of the Java 2 platform v1.2, this class was retrofitted to implement the List …

    See results only from docs.oracle.com
  3. GeeksForGeeks
    https://www.geeksforgeeks.org › java › stack-class-in-java

    Stack Class in Java - GeeksforGeeks

    Mar 23, 2026 · In Java, a Stack is a linear data structure that follows the Last In First Out (LIFO) principle and is defined in the java.util package. Internally, it …

  4. Baeldung
    https://www.baeldung.com › java-stack

    Quick Guide to Java Stack | Baeldung

    • This tutorial is a quick and practical guide to understand this core class in Java – the Stack. Of course, you can explore the full API in the Javadoc. And, as always, all code samples can be found over on GitHub.
    See more on baeldung.com
    • Published: Dec 21, 2019
    • Programiz
      https://www.programiz.com › java-programming › stack

      Java Stack Class - Programiz

      In this tutorial, we will learn about the Java Stack class and its methods with the help of examples.

    • Software Testing Help
      https://www.softwaretestinghelp.com › java-stack-tutorial

      Java Stack Tutorial: Stack Class Implementation With Examples

      • See More

      Apr 1, 2025 · This Tutorial Explains What is Stack in Java, Java Stack Class, Stack API Methods, Stack Implementation using Array & Linked List with the help of Examples.

    • tpointtech.com
      https://www.tpointtech.com › java-stack

      Java Stack class - Tpoint Tech

      Feb 13, 2026 · The stack is a linear data structure that is used to store the collection of objects. It is based on Last-In-First-Out (LIFO).

    • TutorialsPoint
      https://www.tutorialspoint.com › java › java_stack_class.htm

      Java - The Stack Class - Online Tutorials Library

      Stack is a subclass of Vector that implements a standard last-in, first-out stack. Stack only defines the default constructor, which creates an empty stack. Stack includes all the methods defined by Vector, …

    • Computer Science at Princeton
      https://introcs.cs.princeton.edu › java › Stack.java.html

      Stack.java - Princeton University

      Nov 26, 2022 · Below is the syntax highlighted version of Stack.java from §4.3 Stacks and Queues. /****************************************************************************** * Compilation: javac …

    • Codecademy
      https://www.codecademy.com › resources › docs › java › st…

      Java | Stack | Codecademy

      Nov 21, 2022 · A stack in Java represents a last-in, first-out (LIFO) data structure for storing objects. It is implemented as the Stack class within the java.util package …

    • Jenkov.com
      https://jenkov.com › tutorials › java-collections › stack.html

      Java Stack - Jenkov.com

      May 21, 2020 · The Java Stack class is a classical stack data structure, where elements can be pushed onto the top of the stack, and popped off the top again. …

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