Data Structure and Algorithms in Java Free Course

Master Data Structures and Algorithms from fundamentals to advanced concepts with practical examples

  • Get a comprehensive understanding of Data Structures and Algorithms.  
  • Master the fundamentals with practical examples and real-world applications. 
  • Enhance your problem-solving skills and software development proficiency with hands-on experience. 
  • 450,000 + Professionals trained
  • 250 + Workshops every month
  • 100 + Countries and counting

Enhance Your Data Structuring Skills

Have you always been curious about DSA in Java? If yes, our comprehensive Free Data Structures and Algorithms Course is the one for you. It's designed to equip you with essential skills to master data manipulation and algorithmic problem-solving using Java.

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  • 18+ Hours of Self-Paced Learning Content 

  • Test Your Learning with Recall Quizzes 

  • Strengthen fundamentals with Hands-On Exercises 

  • Unlock Knowledge with Interactive eBooks 

  • Accelerate Progress with Auto-Graded Assessments 

Ready to get started?

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The KnowledgeHut Edge

Superior Outcomes

Focus on skilled-based outcomes with advanced insights from our state-of-the art learning platform.

Immersive Learning

Go beyond just videos and learn with recall quizzes, interactive eBooks, case studies and more.

World-Class Instructors

Course instructors and designers from top businesses including Google, Amazon, Twitter and IBM.

Real-World Learning

Get an intimate, insider look at companies in the field through real-world case studies. 

Industry-Vetted Curriculum

Curriculum primed for industry relevance and developed with guidance from industry advisory boards.

Continual Support

Learn better with support along the way. Get 24/7 help, stay unblocked and ramp up your skills. 

prerequisites for Data Structure and Algorithms in Java Free Course


Basic Java Programming skills and foundational knowledge of an IDE (IntelliJ or Eclipse)

What You Will Learn

Fundamentals of Data Structuring and Algorithms

Master basics of data structures and algorithms, their characteristics, including asymptomatic notations and how they are used.

Understanding Arrays

Learn to analyze and implement 1D and 2D arrays while learning about lists, array lists and their implementations.

Stacks and Its Complexities

Learn to identify the methods in Stacks and the time complexities associated with these methods.

Mastering Queues

Understand the queue data structure, the methods in queues, and implement priority queues. 

Skills You Will Gain

Data Structuring


Asymptomatic Notations

Calculating the Big O notation

Implementing 1D and 2D arrays

Array Lists Implementation

Linked Lists

Stack Methods

Queue Data Structure


Learning Objective:

Understand the fundamental concepts of data structures and algorithms, including time complexity and Big O notation, and set up your development environment. 

  • Introduction to Data Structures and Algorithms 
  • Time Complexity 
  • Big O Notation 
  • JDK8 and Intellij Installation 

Learning Objective:

Explore 1D and 2D arrays, exploring their usage and practical examples to enhance your understanding of array manipulation. 

  • 1D Array 
  • Example of 1D Array 
  • 2D Array: Matrix 
  • Example of 2D Array 

Learning Objective:

Explore dynamic data structures with ArrayList, LinkedList, and DoublyLinkedList, and gain hands-on experience in utilizing and managing list-based data. 

  • ArrayList 
  • Example of ArrayList 
  • LinkedList 
  • Example of LinkedList 
  • DoublyLinkedList 
  • Example of DoublyLinkedList 

Learning Objective:

Uncover the intricacies of stacks and their real-world applications through practical examples, enhancing your grasp of this essential data structure. 

  • Stacks 
  • Examples of Stacks 

Learning Objective:

Delve into the world of queues, including standard queues and priority queues (heap), and enhance your problem-solving skills through a practical priority queue example. 

  • Queues 
  • Priority Queues (Heap) 
  • Example of Priority Queue 

Frequently Asked Questions

Learning Data Structures and Algorithms

Data Structures and Algorithms in Java is a comprehensive learning experience that equips individuals with essential skills for effective programming. Covering a wide range of topics from arrays, lists, stacks, and queues to time complexity and algorithmic problem-solving, this course provides a solid foundation in Java programming. By mastering the intricacies of data manipulation and algorithm design, participants gain the ability to optimize code and solve complex problems efficiently. Whether you're a beginner looking to strengthen your programming skills or an experienced developer aiming to enhance your problem-solving abilities, this DSA course free resource offers a structured and practical approach to mastering Java's key concepts. 

If you're an aspiring programmer or developer, learning Data Structures and Algorithms (DSA) in Java is paramount. It equips you with the essential tools to efficiently manage and manipulate data, enabling you to design more optimized and effective software solutions. Java's versatility and wide usage make it an ideal language for mastering DSA concepts. By delving into this DSA free course, you'll not only enhance your problem-solving skills but also lay a strong foundation for tackling complex programming challenges. 

This Data Structures and Algorithms in Java free course is ideal for individuals with basic Java programming skills who are eager to deepen their understanding of data manipulation and algorithmic problem-solving. Whether you're a beginner looking to expand your programming toolkit or an experienced developer aiming to strengthen your expertise in data structures, this course offers a comprehensive journey. It's designed to cater to a wide range of learners, providing a solid foundation for mastering essential concepts and their application in real-world scenarios. 

While it is theoretically possible to gain a conceptual understanding of data structures and algorithms without coding, practical application through coding is highly recommended and often essential for a thorough comprehension of these concepts. Coding is a crucial component of learning DSA, as it allows you to implement and experiment with various data structures and algorithms. How else will you explore their functionality and efficiency? Practical coding exercises enable you to reinforce theoretical knowledge, enhance your problem-solving skills, and gain hands-on experience in applying DSA principles to real-world scenarios. That's why DSA requires active coding knowledge and practice. 

The choice of programming language for Data Structures and Algorithms (DSA) depends on your goals and familiarity. Popular languages like Python, Java, C++, and C# are widely used for DSA due to their strong libraries, efficiency, and readability. Python is known for its simplicity and concise syntax, making it great for beginners. Java offers platform independence and is often used in enterprise applications. C++ provides fine control over memory management and is suitable for competitive programming. C# is favored for its ease of use and integration with Microsoft technologies. Ultimately, the "best" language varies based on your comfort level, the DSA problems you intend to solve, and the specific context of your programming needs. 

There are numerous online platforms that offer free resources to learn Data Structures and Algorithms. These platforms provide comprehensive tutorials, interactive coding challenges, and practical examples to help you grasp the concepts effectively. Some popular options include online coding communities, university websites, and a range of online training platforms. You can access video lectures, coding exercises, and interactive coding platforms that cater to various skill levels, depending on which course you pick. If you're looking for a free DSA course with certificate upon completion, this course by KnowledgeHut is a great example. 

This offering by KnowledgeHut, a Data Structures and Algorithms Free Course with certificate, is regarded as one of the best options available. Thanks to the way the curriculum has been designed, the course covers a comprehensive range of topics, from fundamental concepts to practical implementations, equipping learners with a solid understanding of data manipulation and algorithmic problem-solving in Java. Through clear explanations, hands-on examples, and real-world applications, this course provides a well-rounded and effective learning experience for mastering DSA in Java. 

Absolutely, it's feasible to gain a strong foundation in Data Structures and Algorithms within three months. With dedicated learning and consistent practice, you can grasp key concepts, such as arrays, linked lists, stacks, queues, and more. Focus on understanding the underlying principles and their applications. Engage in hands-on coding and problem-solving exercises to reinforce your knowledge. While becoming a true expert may take longer, a three-month timeframe can undoubtedly provide you with a solid understanding and proficiency in tackling various programming challenges. 

Certification and Career Opportunities

Yes, upon successful completion of the free Data Structures and Algorithms course, you will receive a certificate as proof of completion. This certificate is a mark of the fact that you have completed all course requirements, and now possess strong skills and knowledge of key concepts in data structures and algorithms using Java. You can, of course, showcase this on your resume, as a testament of your commitment to enhancing your programming skills and problem-solving capabilities. 

To secure a job in the Data Structures and Algorithms domain, focus on a few key steps. Firstly, build a solid foundation by mastering essential concepts through courses and practical exercises. Showcase your skills by working on personal projects or contributing to open-source repositories. Leverage platforms like GitHub to exhibit your coding prowess. Engage in coding challenges and competitions to refine your problem-solving abilities. Networking, internships, and participating in hackathons can also open doors to opportunities. Lastly, tailor your resume to highlight relevant skills and projects, and be prepared to showcase your expertise in technical interviews. 

Software developers skilled in Data Structures and Algorithms (DSA) command competitive salaries. In India, the average salary ranges from INR 2-12 Lakhs per annum, with an average annual salary of INR 4.8 Lakhs. Please note that this varies based on experience and location. In the USA, DSA-proficient developers earn an average of $120,000 per year. Sources like U.S. News Money and AmbitionBox provide these insights, reflecting the industry demand for strong DSA skills in both countries. 

Absolutely! Data Structures and Algorithms (DSA) remain highly in demand across the tech industry. Proficiency in DSA is fundamental for efficient problem-solving and optimized software development. The demand for this role is expected to grow by 25% till 2031. It's crucial for technical interviews, coding challenges, and building robust applications. As technology advances, the need for skilled programmers who can design efficient algorithms and utilize data structures effectively continues to grow. Whether you're a beginner or an experienced developer, a solid grasp of DSA is essential, according to NASSCOM. It can significantly enhance your career prospects and make you a sought-after candidate in the ever-evolving tech landscape. 

Certainly, Data Structures and Algorithms (DSA) remain integral to the future of software development. As technology continues to advance, efficient data manipulation and algorithmic problem-solving are paramount. DSA skills are timeless, serving as a foundation for creating optimized, scalable, and innovative solutions. From optimizing search algorithms to crafting efficient data storage, DSA expertise is indispensable in areas like artificial intelligence, data analysis, and cybersecurity. As long as software development thrives, DSA's significance will persist, making it a valuable investment for aspiring programmers and seasoned developers alike. 

What Learners Are Saying

Meena Nigel Software Developer

A comprehensive and well-structured DSA course. The practical exercises and in-depth explanations provided a solid foundation for mastering data structures and algorithms in Java.

Ryan Noronha IT Professional

As someone new to Java, this course was a revelation. The hands-on focus, especially with stacks and queues, boosted my confidence and expanded my programming toolkit.

David Harris Tech Enthusiast

Incredible value! The course bridges theory with real-world application seamlessly, making abstract concepts tangible. A rewarding journey for both beginners and experienced programmers.

Emily Miller Computer Science Student

A game-changer for my studies! The course's structured approach, from arrays to queues, deepened my understanding of data structures and algorithms in Java.

Alex Carter Software Engineer

An exceptional DSA course! The clear explanations and practical examples helped me grasp complex concepts effortlessly. A must for anyone looking to strengthen their Java programming skills.