Java Program For Writing A Function To Delete A Linked List Last Updated : 23 Jul, 2025 Comments Improve Suggest changes Like Article Like Report Algorithm For Java:In Java, automatic garbage collection happens, so deleting a linked list is easy. Just need to change head to null. Implementation: Java // Java program to delete a linked list class LinkedList { // Head of the list Node head; // Linked List node class Node { int data; Node next; Node(int d) { data = d; next = null; } } // Function deletes the entire // linked list void deleteList() { head = null; } // Inserts a new Node at front // of the list. public void push(int new_data) { /* 1 & 2: Allocate the Node & Put in the data*/ Node new_node = new Node(new_data); // 3. Make next of new Node as head new_node.next = head; // 4. Move the head to point to new Node head = new_node; } public static void main(String [] args) { LinkedList llist = new LinkedList(); // Use push() to construct list // 1->12->1->4->1 llist.push(1); llist.push(4); llist.push(1); llist.push(12); llist.push(1); System.out.println("Deleting the list"); llist.deleteList(); System.out.println("Linked list deleted"); } } // This code is contributed by Rajat Mishra Output: Deleting linked list Linked list deleted Time Complexity: O(n) Auxiliary Space: O(1) Please refer complete article on Write a function to delete a Linked List for more details! Comment More infoAdvertise with us Next Article Interview Preparation For Software Developers K kartik Follow Improve Article Tags : Java Linked Lists Delete a Linked List Practice Tags : Java Similar Reads Interview PreparationInterview Preparation For Software DevelopersMust Coding Questions - Company-wise Must Do Coding Questions - Topic-wiseCompany-wise Practice ProblemsCompany PreparationCompetitive ProgrammingSoftware Design-PatternsCompany-wise Interview ExperienceExperienced - Interview ExperiencesInternship - Interview ExperiencesPractice @GeeksforgeeksProblem of the DayTopic-wise PracticeDifficulty Level - SchoolDifficulty Level - BasicDifficulty Level - EasyDifficulty Level - MediumDifficulty Level - HardLeaderboard !!Explore More...Data StructuresArraysLinked ListStackQueueBinary TreeBinary Search TreeHeapHashingGraphAdvance Data StructuresMatrixStringAll Data StructuresAlgorithmsAnalysis of AlgorithmsSearching AlgorithmsSorting AlgorithmsPattern SearchingGeometric AlgorithmsMathematical AlgorithmsRandomized AlgorithmsGreedy AlgorithmsDynamic ProgrammingDivide & ConquerBacktrackingBranch & BoundAll AlgorithmsProgramming LanguagesCC++JavaPythonC#Go LangSQLPHPScalaPerlKotlinWeb TechnologiesHTMLCSSJavaScriptBootstrapTailwind CSSAngularJSReactJSjQueryNodeJSPHPWeb DesignWeb BrowserFile FormatsComputer Science SubjectsOperating SystemsDBMSComputer NetworkComputer Organization & ArchitectureTOCCompiler DesignDigital Elec. & Logic DesignSoftware EngineeringEngineering MathematicsData Science & MLComplete Data Science CourseData Science TutorialMachine Learning TutorialDeep Learning TutorialNLP TutorialMachine Learning ProjectsData Analysis TutorialTutorial LibraryPython TutorialDjango TutorialPandas TutorialKivy TutorialTkinter TutorialOpenCV TutorialSelenium TutorialGATE CSGATE CS NotesGate CornerPrevious Year GATE PapersLast Minute Notes (LMNs)Important Topic For GATE CSGATE CoursePrevious Year Paper: CS exams Like