Java DSA Course Free

Data Structures & Algorithms in Java

star 4.48  Beginner level 6.0 learning hrs 182.6K+ Learners

Learn key data structures, algorithms, recursion techniques, and sorting methods like bubble sort, quick sort and merge sort. Join this free DSA course in Java to gain hands-on experience solving real-world programming challenges.

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About this course

This free Java DSA course introduces you to the foundational concepts of data structures and algorithms, which are essential for solving real-world programming problems. You'll start by understanding what data structures are and why they are important for efficient programming. The course covers key topics such as time complexity, recursion, and sorting algorithms, with a focus on practical applications. You'll learn to analyze algorithm performance, design recursive functions, and implement sorting techniques such as bubble sort, quicksort, and mergesort.

You'll gain hands-on experience with recursive problems, understand the internal workings of recursion, and master sorting algorithms to handle large datasets. This practical knowledge will enable you to tackle real-world coding challenges, making you a more efficient and effective programmer. By the end of this course, you will be able to apply data structures and algorithms to optimize code, solve complex problems, and improve program efficiency.



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Course outline

What is Data Structure?

A data structure is a method of arranging data to be used effectively. This module focuses on introducing you to Data Structures.

Importance of Data Structure

Data Structures are the backbone of any programming language. This module explains the significance of Data Structures.

Introduction to Algorithm

This module introduces you to the algorithm and its role in coding.

Time Complexity

Time Complexity represents the number of times a statement gets executed. This module explains time and space complexity, and you will learn to find algorithms' time and space complexity.

Additional Example of Time Complexity

This module gives you a better understanding of time complexity with the help of the code example.

Importance of Recursion

This module explains the importance of recursion in programming languages.

What is Recursion?

Recursion is a technique in which a function calls itself one or more times in its code. This module helps you understand recursion in detail.

Example of Recursion

Examples are the best way to understand any concept. Thus, this module consists of examples of recursion that will help you understand it better.

Steps to Create Recursive Function

To learn and execute recursion, you must be thorough with the steps involved. This module addresses the steps involved in creating recursive functions.

Recursive Function Examples

This module has examples of recursion that explains termination condition, business logic, and the recursive call steps to help you understand recursion better.

Recursion in Tree

This module explains what recursion is and how it works in the context of a tree.

Internal Mechanism of Recursion

It is essential to understand the internal mechanism of recursion as it is one of the significant concepts of programming languages. This module focuses on the internal mechanism of recursion and explains it with the help of a stack example.

Assignment Solutions

This module contains solutions for the various recursion problems that address their time complexity. 

Tower of Hanoi

Tower of Hanoi is a mathematical puzzle or a game that will help you understand the stack and recursion concept. This module aims at familiarizing you with the recursion through the Tower of Hanoi concept.

Tower of Hanoi Example

This module helps you understand the Tower of Hanoi concept better by explaining the concept with the help of an example. 

Need for Sorting Algorithm

Sorting algorithms are considered a significant part of programming. Before getting started with sorting algorithms, it is crucial to understand their need and this module focuses on addressing their importance.

Types of Sorting Algorithm

This module familiarizes you with the various types of sorting algorithms present.

Bubble Sort

Bubble sort is a simple sorting algorithm that repeatedly steps through the list to be sorted. This module explains bubble sort and its algorithm in detail.

Quick Sort

Quick sort is a sorting algorithm that uses a partitioning step to divide an array into subarrays, followed by a sorting step to sort the subarrays. This module explains the quick sort, time complexity, and algorithm with an example and demonstration.

Merge Sort

A merge sort is a sorting algorithm that sorts items by dividing them into two groups, sorting each group, and then merging the groups back together. This module explains the merge sort, time complexity, and algorithm with an example and demonstration.

Insertion Sort

Insertion sort is a sorting algorithm in which each element is inserted into its correct position in a sorted array. This module explains insertion sort, time complexity, and algorithm with an example and demonstration.

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Data Structures & Algorithms in Java

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6.0 Hours

Beginner

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182.6K+ learners enrolled so far

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Learner reviews of the Free Courses

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Reviewer Profile

5.0

Country Flag India
“Data Structure & Algorithms in Java for Intermediate Level”
To excel in Data Structures and Algorithms in Java at an intermediate level, focus on mastering core concepts and their applications. Start by deepening your understanding of advanced data structures such as AVL trees, Red-Black trees, and hash tables. Practice implementing and optimizing algorithms for sorting, searching, and graph traversal, like Dijkstra's and A* algorithms. Dive into complexity analysis to evaluate and improve the efficiency of your code. Additionally, leverage Java-specific features, such as generics and streams, to enhance your solutions.
Reviewer Profile

4.0

“Mastering Core Data Structures Through Clear Examples and Practical Implementation in Java - An Enlightening Learning Journey”
The lecture excelled in breaking down complex DSA concepts into digestible segments. The hands-on coding examples helped solidify theoretical concepts, especially in understanding time complexity analysis. The interactive problem-solving sessions and real-world applications of data structures made the learning experience both practical and engaging. I particularly appreciated the step-by-step explanation of algorithm optimization techniques.
Reviewer Profile

5.0

“Empowering Knowledge Through Practical Application”
I recently completed the Data Structures & Algorithms in Java for Intermediate Level course at Great Learning Academy, and it was an incredibly enriching experience! The course content was well-structured, blending theoretical concepts with practical exercises that reinforced my understanding. I appreciated the focus on real-world applications of data structures and algorithms, which enhanced my problem-solving skills significantly.
Reviewer Profile

5.0

Country Flag United Arab Emirates
“Mastering Data Structures & Algorithms in Java”
This course is designed for intermediate Java developers who want to deepen their understanding of Data Structures and Algorithms (DSA). You will explore essential data structures such as arrays, linked lists, stacks, queues, trees, and graphs, and learn how to implement and utilize them effectively in Java.
Reviewer Profile

4.0

Country Flag India
“Clear, engaging, practical, creative, beginner-friendly.”
he instructor for the Data Structures and Algorithms in Java course is fantastic! They explain everything in a clear and simple way, making complex concepts easy to understand. Their teaching style is engaging, and they’re always available to help whenever needed. Highly recommended for anyone looking to learn and improve their skills!
Reviewer Profile

5.0

Country Flag India
“Got the basics cleared and its easy to understand these way.”
I am extremely grateful for the comprehensive and insightful learning experience provided by Great Learning. The course material was well-structured, engaging, and rich in real-world applications. The practical knowledge I gained has significantly enhanced my skills and confidence in the subject. I truly appreciate the dedication of the instructors and the overall support provided throughout the course. This certification has empowered me to take on new challenges and advance my career. Thank you, Great Learning, for this valuable opportunity!
Reviewer Profile

5.0

Country Flag India
“It was awesome actually, the test was smooth and great videos”
The course covered essential topics thoroughly, with clear explanations and practical coding exercises. The instructors were knowledgeable and supportive, and the course was well-structured, making complex concepts easier to grasp. Overall, it provided great value and has significantly improved my understanding of DSA.
Reviewer Profile

5.0

Country Flag India
“Comprehensive DSA Course: Excellent for Strengthening Problem-Solving Skills”
The DSA (Data Structures and Algorithms) course was comprehensive and well-structured. The instructor explained complex concepts clearly, with plenty of practical examples and exercises. The course greatly improved my problem-solving skills and coding efficiency. Highly recommend it for anyone looking to strengthen their foundational programming knowledge.
Reviewer Profile

5.0

Country Flag India
“I really enjoyed the online course. I thought it was well-planned and very clear, easy for me to follow.”
I like the way the faculty explains all the topics easily and in an understandable manner. I am very happy to have gained great knowledge about the course. I really want to share this with you because now I am proficient at coding using the DSA course taught by you. Thank you so much for providing such a great learning academy to gain knowledge about DSA.
Reviewer Profile

4.0

“sorting algorithms and data structures”
fully describe all points and easy to understand. examples are most suitable for topics
Reviewer Profile

5.0

Country Flag United States
“Learned New Skills to help me elevate my career”
Learned a new skill to help me grow within my career field and hopefully eventually achieve loftier goals
Reviewer Profile

5.0

Country Flag India
“Learning data structures enhanced my problem-solving skills and deepened my understanding of efficient algorithms.”
"The learning platform provides a comprehensive approach with interactive lessons, real-world examples, and coding exercises. It includes video tutorials, quizzes, and projects to reinforce concepts, catering to both beginners and advanced learners. With a user-friendly interface and a focus on practical application, it ensures a deeper understanding of data structures and algorithms."
Reviewer Profile

5.0

Country Flag India
“Overall, this course provided a solid foundation in Data Structures and Algorithms using Java. I would highly recommend it to anyone”
I found the Data Structures and Algorithms in Java course to be extremely beneficial in enhancing my understanding of fundamental computer science concepts. The course was well-structured, with each topic building upon the previous one in a logical sequence.
Reviewer Profile

4.0

Country Flag India
“"Mastering Data Structures and Algorithms: Building a Strong Foundation for Problem Solving"”
Throughout the DSA course at Great Learning, I gained a comprehensive understanding of fundamental concepts that are crucial for efficient problem solving in programming. The course provided in-depth knowledge of various data structures, including arrays, linked lists, stacks, queues, trees, and graphs, as well as their respective algorithms for searching, sorting, and traversing.
Reviewer Profile

5.0

Country Flag India
“Learning DSA with Java through Great learning is fun!”
Exploring DSA with Java sharpens problem-solving and coding skills
Reviewer Profile

5.0

“good for learn basics of data structures and algorithms”
The DSA (Data Structures and Algorithms) course is excellent for building a strong foundation in problem-solving. It covers essential concepts like arrays, linked lists, stacks, queues, trees, and algorithms such as sorting and searching. The explanations are clear, with practical coding exercises to solidify understanding. Highly recommended for anyone looking to improve their coding and interview preparation skills!
Reviewer Profile

4.0

“Gained a solid understanding of essential data structures”
Gained a solid understanding of essential data structures (arrays, linked lists, stacks, queues, trees, and graphs) and algorithms (sorting, searching, and dynamic programming) through hands-on projects and coding challenges. Enhanced problem-solving skills by implementing efficient algorithms and analyzing their time and space complexities.
Reviewer Profile

5.0

Country Flag India
“nice The course provided a comprehensive understanding of key concepts and practical applications. The content was well-structured, making it easy to follow along. ”
The course provided a comprehensive understanding of key concepts and practical applications. The content was well-structured, making it easy to follow along. Instructors were knowledgeable and engaging, enhancing the learning experience. I appreciated the hands-on exercises that reinforced the material. Overall, it was an informative and valuable course. Thank you!
Reviewer Profile

4.0

Country Flag India
“The video content provided is the biggest highlight”
The DSA course provided a solid foundation in data structures and algorithms, covering key concepts like arrays, linked lists, sorting, and searching efficiently. The examples and problem-solving approach helped strengthen logical thinking. Practical coding exercises were invaluable in understanding real-world applications. Overall, a great balance between theory and practice, boosting confidence in tackling complex problems.
Reviewer Profile

5.0

Country Flag India
“This course was enlightening, blending theory with practical examples. It challenged my understanding, deepened my knowledge, and sharpened my problem-solving skills. Overall, it was a rewarding learning experience.”
This course provided a comprehensive understanding of the subject, balancing theoretical concepts with hands-on practice. The challenging assignments pushed me to think critically and apply what I learned in real-world scenarios. The interactive sessions and collaborative projects enhanced my skills, making the entire experience both intellectually stimulating and professionally rewarding.

Frequently Asked Questions

Will I receive a certificate upon completing this free course?

Yes, upon successful completion of the course and payment of the certificate fee, you will receive a completion certificate that you can add to your resume.

Is this course free?

Yes, you may enroll in the course and access the course content for free. However, if you wish to obtain a certificate upon completion, a non-refundable fee is applicable.

What topics are covered in the Data Structures and Algorithms in Java Free Course?

This course covers essential data structures, including arrays, linked lists, stacks, queues, trees, and graphs. You will also learn key algorithms such as search, sorting, and dynamic programming, all taught in Java, giving you a solid foundation for efficient problem-solving.



Who should take this Java DSA course free?

This course is suitable for learners with a basic understanding of Java who want to strengthen their knowledge of data structures and algorithms. It’s ideal for students, aspiring software developers, or anyone preparing for coding interviews. It’s perfect for anyone looking to take a free DSA course in Java.

What Modules are covered in this free online Java DSA course?

You will learn about the following topics in this course:

  • What is Data Structure?
  • Importance of Data Structure
  • Introduction to Algorithm
  • Time Complexity
  • Additional Example of Time Complexity
  • Importance of Recursion
  • What is Recursion?
  • Example of Recursion
  • Steps to Create Recursive Function
  • Recursive Function Examples
  • Recursion in Tree
  • Internal Mechanism of Recursion
  • Assignment Solutions
  • Tower of Hanoi
  • Tower of Hanoi Example
  • Need for Sorting Algorithm
  • Types of Sorting Algorithm
  • Bubble Sort
  • Quick Sort
  • Merge Sort
  • Insertion Sort


How long does it take to complete this Data Structures and Algorithms in Java Free Course?

The course is self-paced. On average, you can expect to complete the course in about 6 hours, depending on your speed and time dedicated to practice.

Do I need prior programming experience to take this Java DSA course free?

Yes, a basic understanding of Java programming is recommended. If you're new to Java, it's best to first complete an introductory Java course before starting this free DSA course in Java.

Does this course include hands-on practice?

Yes, this Java DSA course free offers practical coding exercises where you will implement and work with various data structures and algorithms. These exercises are designed to help you apply what you’ve learned and improve your coding skills.

How will this DSA in Java course free help me with technical interviews?

The concepts covered in this course are often tested in technical interviews. By learning to implement and understand data structures and algorithms in Java, you’ll be well-prepared for the coding challenges commonly found in software development interviews.

What skills will I gain from completing this Java DSA course free with certificate?

You will gain skills in:

  • Data Structures Basics

  • Importance of Data Structures

  • Algorithms Introduction

  • Time Complexity

  • Recursion Fundamentals

  • Recursive Functions

  • Recursive Trees

  • Tower of Hanoi

  • Sorting Algorithms

  • Bubble Sort

  • Quick Sort

  • Merge Sort

  • Insertion Sort


Can I access the course content anytime?

Yes, since this is a free DSA course in Java, you can access the course content anytime. You can progress through the course at your own pace and return to any section whenever needed.

How does this Data Structures and Algorithms in Java Free Course improve my Java programming skills?

This course helps you enhance your Java programming skills by teaching you to implement common data structures and algorithms efficiently. It’s a great way to improve your coding abilities and prepare for more complex programming tasks.

How do I enroll in this free DSA course in Java?

To enroll, simply visit the course page, click on “Enroll Now,” and follow the easy sign-up steps. You can start learning immediately after enrolling in this Data Structures and Algorithms in Java Free Course.



Who is eligible to take this Data Structures and Algorithms in Java course?

As this free course is explicitly designed for beginner-level learners, any enthusiast can enroll in this course and start learning from scratch.

Why choose Great Learning for this Data Structures and Algorithms in Java course?

Great Learning Academy is well known for its free courses incorporating industry knowledge that helps learners upskill their careers. This free course is beginner-friendly and tends to empower learners with a solid knowledge base on Data Structures and Algorithms in Java.

Can I sign up for multiple courses from Great Learning Academy at the same time?

Great Learning Academy offers free courses in multiple domains, and the learners are free to register for more than one course, which enables them to strengthen their career goals.  
 

How much does this Data Structures and Algorithms in Java course cost?

This course is offered for free, and learners don't have to pay any cost to register for this course.

What knowledge and skills will I gain upon completing this free Data Structures and Algorithms in Java course?

You will learn about essential topics like recursion, calculating the complexity of the code, and sorting algorithms.

What jobs demand that you learn Data Structures and Algorithms in Java?

Many jobs demand that you learn Data Structures and Algorithms in Java, some of which include: 
- Software Engineer
- Programmer
- Database Administrator
- System Analyst
 

What are my next learning options after this Data Structures and Algorithms in Java course?

Post this free course, you can enroll in the Full Stack Developer Course that covers advanced topics required in Software Development.

Will I have lifetime access to the free course?

Any learners who wish to revisit our free course can do so at any time and brush up on their knowledge of Data Structures and Algorithms in Java. 

How long does it take to complete this free Data Structures and Algorithms in Java course?

This free course contains four hours of video content that can be completed according to the learner's pace.

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Java Data Structures  

What is Data Structure?

The literal meaning of data structures is organizing the data in memory. There are various ways by which one can organize the data in memory; one example is an array. Array in java is a collection of memory elements where data is sequentially stored. In other words, the array stores elements in a continuous manner. There are other many other ways to organize data in memory, which are:

  • Primitive data structure
  • Non-primitive data structure

Primitive Data Structure

The primitive data structures are primitive data types that include int, char, float, double, and pointer. These primitive data structures can hold a single value.

Non-Primitive Data Structure

The non-primitive data structure is divided into two types:

  • Linear data structure
  • Non-linear data structure

The arrangement of data in a sequential manner is known as a linear data structure. The data structures used for this purpose are Arrays, Linked lists, Stacks, and Queues. In these data structures, one element is connected to only one another element in a linear form.

 

Data structures can also be classified as:

  • Static Data Structure: The size of static data structures is allocated at the time of compiling, and therefore, the maximum size is fixed. That is the reason it is called a static data structure. 
  • Dynamic Data Structure: The size of the dynamic data structures is allocated at the run time, and therefore, the maximum size is flexible. That is the reason it is called a dynamic data structure.

 

Benefits of Data Structures

Data Structures possess various advantages for professionals in the field of Java development. The reasons one should learn Data Structures and Algorithms are:

  • Efficiency- Given the choice of the data structure for implementing a particular ADT is the right one, and it makes the program efficient for time and space.
  • Reusability- Data Structures provide reusability as multiple programs can use the same data structures.
  • Abstraction- The Data Structure provides a level of abstraction where clients cannot see the internal working of data structure and hence do not have to worry about its implementation.

 

What is an Algorithm? 

Algorithms were historically used as mathematical computation tools that are deeply connected with computer science and data structures. An algorithm is a sequence of instructions followed to accomplish a task in a specified time period. They have some values that are mentioned below:

  • Receive zero or more inputs
  • Produce one or more outputs
  • Consist of clear instructions, no ambiguity
  • Terminates after a finite number of steps

While programs might be algorithmic in nature, some programs would not terminate without external intervention. There are criteria for code sequences to qualify as algorithms. One example of a code sequence that qualifies as an algorithm is the one that prints a report. Another example is Euclid’s algorithm, which calculates the mathematical greatest common divisor. Essentially, algorithms are a data structure’s basic operations.



 

About The Program

The Java Data Structures course curriculum covers the basics of data structures and algorithms in Java. The algorithms covered in detail are recursion, searching, sorting, and more. It will also cover the various data structures and algorithms in Java concepts such as Arrays, Linked Lists, Stacks, and Queues. The concepts are taught with hands-on coding exercises and practical learning. 

The instructor will also help you prepare for coding interviews by helping you tackle common coding problems. The Data Structures and Algorithms free course will help you learn the concepts and prepare for employment in the Java coding domain. You will also understand the nuances of the calculation of complexity in a code. 

Upon completing the data structures and algorithms in the Java free course, you will receive a certificate by Great Learning that you could update on your LinkedIn profile and resume.  

Enroll For Free