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The Complete Core Java Course : Learn to Code (Udemy.com)

Master Java for Selenium, Automation, and DevOps – No Prior Coding Required.

Created by: Dezlearn Education

Last updated January 2026

Our take

Based on the ratings of 929 students, a sample of their written reviews and the syllabus, as the course stood in January 2026. No course pays to be reviewed.

This is a ten-hour Core Java course from Dezlearn Education, a training company focused on test automation. The syllabus runs through 16 sections and 105 lectures: basics, strings, object oriented programming, collections, regular expressions, exception handling and dates. It then finishes with reading text files using Apache Commons IO and Excel files using Apache POI. That last stretch gives away the target. The audience list is manual testers, Selenium testers and people moving toward DevOps, so the course covers what they need from Java rather than a general computer science start.

Reviewers mostly like the teaching. They call the explanations simple and the pace right, and one learner said object oriented ideas finally stopped feeling like a pile of math. A QA reviewer called it enough Java for automation work. The complaints are consistent. The course has no quizzes or coding exercises, and two reviewers asked for homework after each lecture or practice questions with solutions. One wanted interview questions, and one found the voice unclear. Still, most of the 929 ratings are four or five stars.

Think of it as a quick, practical starting point, not a full path to a developer job. The material was refreshed in January 2026 and adds a short Java 21 bonus, though the main lessons are built on JDK 10 and Eclipse, so expect some older screens. About 20,600 students have taken it. Testers heading for Selenium should find it a good fit. Anyone who learns by doing will have to find their own practice problems.

Best forManual testers who need just enough Java for Selenium, plus Excel and text file handling, in about ten hours.
Skip it ifYou want quizzes, graded exercises or a project to build, or you need Java beyond the core language.

Pros

  • Plain, example-led explanations that reviewers say made OOP finally click
  • Covers Apache POI Excel and Commons IO text file handling for test automation
  • About ten hours spread over 105 short lectures, so it is quick to get through
  • Refreshed in January 2026 with a short Java 21 bonus section

Cons

  • No quizzes or coding exercises, so practice has to come from the learner
  • Main lessons use JDK 10 and Eclipse, so the setup looks dated
  • One reviewer found the audio unclear and another wanted interview questions
Excellent Teaching. As a QA, I want to improve my Java concepts for Automation. So this course is enough :) Thank You.
Sandeep Kumar Pattnaik, a student

Listed for all levels, but it really suits true beginners and testers; the requirements say no prior coding is needed.

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What you will learn

  • Core Java. You will learn Java programming through practical sessions.
  • New to coding? No worries. This course covers coding from scratch.
  • Ideal for professionals transitioning to DevOps wanting to get a coding booster
  • Ideal course for manual testers aspiring to switch into automation world
  • More than enough concepts covered for professionals learning 'Java for Selenium'
  • Get an in-depth understanding of basic & advanced Java concepts
  • Object Oriented Programming (OOPS)
  • Advanced Java Programming
  • In-depth Core Java Concepts
  • Java Programing from Scratch
  • Data Structures in Java
  • Regular Expressions in Java
  • Date and Time Operations (Rev. in Java 8)
  • Exception Handling in Java
  • Working with File System in Java
  • No PPTs. Programming Oriented Sessions.
  • Instructor Guidance and Query Resolution Support

Course content

16 sections · 105 lectures · 10 hours of video 4 articles

  1. 1Level 1 - Basic concepts of Java Programming 3 free previews15 lectures · 1.1 hours
  2. 2Level 2 - String Operations 3 free previews6 lectures · 42 min
  3. 3Level 3 - Object Oriented Programing - VIMP 3 free previews10 lectures · 1.7 hours
  4. 4Level 4 - Special Classes in Java 3 free previews6 lectures · 32 min
  5. 5Level 5 - What's New In JAVA 10 1 free preview3 lectures · 12 min
  6. 6Level 6 - Inheritance and Abstraction - IMP 3 free previews9 lectures · 1.2 hours
  7. 7Level 7 - Arrays - IMP 3 free previews7 lectures · 44 min
  8. 8Level 8 - Lists 3 free previews5 lectures · 40 min
  9. 9Level 9 - Sets and Maps 3 free previews7 lectures · 33 min
  10. 10Level 10 - Regular Expressions - VIMP 3 free previews10 lectures · 1.2 hours

Who it is for

The instructor says it suits

  • Anyone aspiring to learn to coding
  • Manual Testing Professionals
  • Selenium Testers
  • Automation Aspirants
  • Getting started with programming world
  • QE Testing Professionals
  • Automation Test Engineers
  • Software Engineers

What you need before you start

  • No prior coding experience required. Anyone willing to learn coding can take this course.
  • Course covers in depth core Java concepts with plenty of hands on coding exercises

How it compares

Against the other 231 rated Udemy courses in Java on CourseDuck:

  • Rating4.2 out of 5higher than 16% of them
  • Reviews929#122 of 232 by number of reviews
  • Length10.4 hourslonger than 53% of them
  • Last updatedJanuary 2026more recently than 72% of them

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Course Description

Hi Friends, this course is specially designed for students who do not have prior coding experience. Course covers all the Core Java Concepts from basic to advanced levels along with practical examples and coding exercises.

This course covers Core Java topics in detail from basic to advanced levels. I believe in example-oriented teaching. So, you won’t find any PPTs during the sessions. But, you will find dozens of real time scenarios used to elaborate Java basic and advanced concepts.

Feel free to post your questions/feedback in the block provided under each session-video. I will make sure that all of your queries are addressed. ‘Course Outline’ below will give you a good idea about the depth and the overall coverage of this course. If you want to learn any other Core Java concept - which is not already covered in this course - then feel free to let me know via Udemy messenger.

Course Outline:

Java Basics

  1. JDK 10 and Eclipse Installation

  2. Hello World Java Program

  3. Primitive Data Types in Java

  4. 'var' keyword in Java 10

  5. Arithmetic Operators in Java

  6. Logical and Bitwise Operators in Java

  7. Relational Operators in Java

  8. If - Condition in Java

  9. Nested If - Condition in Java

  10. For Loop in Java

  11. Hands-On Exercises on 'For Loop'

  12. Nested For Loop in Java

  13. Hands-On Exercises on 'Nested For Loop'

  14. 'While' & 'Do While' Loop in Java

  15. Loop 'Break' & 'Continue' Statements in Java

  16. String Basics in Java

  17. String Comparison Operations in Java

  18. String Search Operations in Java

  19. String (Cut) Slice Operations in Java

  20. String Replace Operations in Java

  21. String Conversion Operations in Java

Object Oriented Programing (OOPS) in Java

  1. Concept of Classes and Objects in Java

  2. Hands on exercises on Class and Object

  3. Methods in Java

  4. Method Overloading in Java

  5. Access Specifiers (Access Modifiers) in Java

  6. Constructor in Java

  7. Data Encapsulation in Java

  8. Static Keyword in Java

  9. Concept of Main Method in Java

  10. Class and Object Advanced Exercises

  11. Class Inheritance in Java

  12. Method Overriding in Java

  13. Polymorphism in Java

  14. Super Keyword in Java

  15. Super Class Constructor in Java

  16. Protected Access in Java

  17. Abstraction in Java

  18. Interfaces in Java (Java Interface)

  19. Final Keyword in Java

Data Structures in Java

  1. Arrays in Java

  2. Array Object in Java

  3. Enhanced (Modified) For Loop for Array Iteration in Java

  4. Hands-on Exercises on Array in Java

  5. 2-Dimensional Arrays in Java

  6. Hands-on Exercise on 2D Arrays in Java

  7. Array of Object in Java

  8. Array List in Java (ArrayList)

  9. Structure of ArrayList in Java

  10. Linked List in Java (LinkedList)

  11. ArrayList vs LinkedList in Java

  12. List Iterator in Java

  13. Hash Set in Java

  14. Linked Hash Set in Java

  15. Tree Set in Java

  16. Iterating on Set in Java

  17. Hash Map in Java

  18. Tree Map in Java

  19. Iterating Over Maps in Java

Regular Expressions in Java

  1. Introduction to RegEx in Java

  2. Quantifiers in Regular Expressions

  3. Character Classes in Regular Expressions

  4. Bracket Expressions

  5. OR Operator in RegEX

  6. DOT Operator in RegEX

  7. Greedy and Lazy Matching

  8. Hands-on Exercises on Regular Expressions

  9. Regularizing Number Ranges

Exception Handling in Java

  1. What is an Exception in Java?

  2. Error vs Exception in Java

  3. Checked and Unchecked Exceptions in Java

  4. Throws Declaration in Java

  5. Try and Catch Block (Exception Handling) in Java

  6. 'Finally' Block in Java

Date and Time Operations (Revised in Java 8)

  1. Local Date and Time Operations in Java

  2. Custom Date and Time Operations in Java

  3. Future and Past Date Operations in Java

  4. Future and Past Time Operations in Java

  5. Date Difference Calculation in Java

  6. Time Difference Calculation in Java

  7. DateTime Formatter in Java

Special Classes in Java

  1. Math Class in Java

  2. StringBuilder Class in Java

  3. StringBuilder Methods in Java

  4. Scanner Class in Java

  5. Random Class (for creating random numbers) in Java

  6. UUID Class in Java (for creating universally unique string IDs)

Working with File System in Java

  1. How to Read a Text File in Java?

  2. Apache Commons IO

  3. How to Edit a Text File in Java?

  4. Hands on Exercises with Text Files in Java

  5. Copy and Move (Rename) a Text File in Java

  6. Apache POI Setup

  7. Reading Excel Data in Java

  8. Read Excel Data into a 2 D Array in Java

  9. Write Data in Excel Sheet in Java

  10. Interview Questions


**I will be updating more topics to this outline as per changing trends in technology**


To get the maximum benefit from the course, please take a look at following steps explaining 'How to take this course?'

Step 1:  Schedule 30-45 minutes of your time daily for 5 days a week. 'Continuity' is the key.

Step 2:  All sessions are divided in small videos of less than 20 minutes. Watch 2-3 videos daily.

Step 3:  Hands-on exercise is very important. So, immediately try out the programs discussed in the session, on your own. You can download these programs from lecture resources.

Step 4: Assignments with answer keys are provided where-ever necessary. Complete the assignments before jumping on to the next sessions.

Step 5:  If you come across any questions or issues, please feel free to contact me and I will make sure that your queries are resolved.

Wish you all a very happy learning.

Note: For the best video streaming quality, please adjust the resolution from 'settings' at bottom right-hand corner of video player. Choose 1080p or 720p as per your network speed.

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Instructor Details

Dezlearn Education

Dezlearn provides industry standard training on Software Automation Testing Tools & Programming Languages.

Our programs include extensive and hands-on training on Java, C#, Python, Selenium WebDriver, Appium, TestNG, Cucumber (BDD), Continuous Integration (CI), Jenkins, REST and SOAP API Automation, WireMock, Gatling Load Testing.

We motivate our students to keep up a learner’s attitude. Because, it is very important to adopt new technologies to sustain and grow in this ever-changing world of software technology.

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Reviews

4.2

929 ratings on Udemy

Select a bar to show only those reviews.Select the bar again to show every rating.

By Prakash K G on 10/27/2024

Voice and explaination is not clear

By Venu on 1/20/2022

practical explanation is good here need to add interview questions and comparisons also required to understand more and more this is very usefull to basic learners

By Jyothi M Honnappanavar on 12/27/2020

I am very happy with the explanations .I was thinking OOp's concepts are some big mathematical equations which can not be understandable. But this course nailed it in very easy way. Thank you so much

By Sandeep Kumar Pattnaik on 12/6/2020

Excellent Teaching.
As a QA, I want to improve my Java concepts for Automation. So this course is enough :)
Thank You.

By Pavan on 11/12/2020

It is good for beginners and intermediary learners

By Rcz Anita on 10/22/2020

Gut, dass wir auch Hilfe zur Installieren bekommen haben.

By Akhil Somashekaran on 9/8/2020

its more understandable and intresting

By P.B.Kalyan Krishna on 9/2/2020

Very good and detailed explanation.

By Prashanth R on 8/23/2020

It was very nice course from udemy, liked it

By Nikhil Yogesh Joshi on 8/21/2020

very precise and to the point. thank you

By Priyanka Ghogare on 8/16/2020

It is very easy to learning

By Obuli Sankar K on 8/9/2020

Amazing, cool, Superb, Hats off!!!!!
Marvellous
Keep up the good work

Showing 12 of 99 reviews

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Quality Score

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Overall Score : 84 / 100