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.
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.
Listed for all levels, but it really suits true beginners and testers; the requirements say no prior coding is needed.
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
- 1Level 1 - Basic concepts of Java Programming 3 free previews15 lectures · 1.1 hours
- 2Level 2 - String Operations 3 free previews6 lectures · 42 min
- 3Level 3 - Object Oriented Programing - VIMP 3 free previews10 lectures · 1.7 hours
- 4Level 4 - Special Classes in Java 3 free previews6 lectures · 32 min
- 5Level 5 - What's New In JAVA 10 1 free preview3 lectures · 12 min
- 6Level 6 - Inheritance and Abstraction - IMP 3 free previews9 lectures · 1.2 hours
- 7Level 7 - Arrays - IMP 3 free previews7 lectures · 44 min
- 8Level 8 - Lists 3 free previews5 lectures · 40 min
- 9Level 9 - Sets and Maps 3 free previews7 lectures · 33 min
- 10Level 10 - Regular Expressions - VIMP 3 free previews10 lectures · 1.2 hours
- 11Level 11 - Exception Handling - IMP 3 free previews6 lectures · 24 min
- 12Level 12 - Date and Time Operations (Rev. Java 8) 3 free previews7 lectures · 24 min
- 13Level 13 - Working with Text Files (Apache Commons IO) 1 free preview5 lectures · 25 min
- 14Level 14 - Working with Excel Files (Apache POI) 1 free preview4 lectures · 31 min
- 15Bonus: What's New in Java 213 lectures · 2 min
- 16Next Steps2 lectures · 3 min
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
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
JDK 10 and Eclipse Installation
Hello World Java Program
Primitive Data Types in Java
'var' keyword in Java 10
Arithmetic Operators in Java
Logical and Bitwise Operators in Java
Relational Operators in Java
If - Condition in Java
Nested If - Condition in Java
For Loop in Java
Hands-On Exercises on 'For Loop'
Nested For Loop in Java
Hands-On Exercises on 'Nested For Loop'
'While' & 'Do While' Loop in Java
Loop 'Break' & 'Continue' Statements in Java
String Basics in Java
String Comparison Operations in Java
String Search Operations in Java
String (Cut) Slice Operations in Java
String Replace Operations in Java
String Conversion Operations in Java
Object Oriented Programing (OOPS) in Java
Concept of Classes and Objects in Java
Hands on exercises on Class and Object
Methods in Java
Method Overloading in Java
Access Specifiers (Access Modifiers) in Java
Constructor in Java
Data Encapsulation in Java
Static Keyword in Java
Concept of Main Method in Java
Class and Object Advanced Exercises
Class Inheritance in Java
Method Overriding in Java
Polymorphism in Java
Super Keyword in Java
Super Class Constructor in Java
Protected Access in Java
Abstraction in Java
Interfaces in Java (Java Interface)
Final Keyword in Java
Data Structures in Java
Arrays in Java
Array Object in Java
Enhanced (Modified) For Loop for Array Iteration in Java
Hands-on Exercises on Array in Java
2-Dimensional Arrays in Java
Hands-on Exercise on 2D Arrays in Java
Array of Object in Java
Array List in Java (ArrayList)
Structure of ArrayList in Java
Linked List in Java (LinkedList)
ArrayList vs LinkedList in Java
List Iterator in Java
Hash Set in Java
Linked Hash Set in Java
Tree Set in Java
Iterating on Set in Java
Hash Map in Java
Tree Map in Java
Iterating Over Maps in Java
Regular Expressions in Java
Introduction to RegEx in Java
Quantifiers in Regular Expressions
Character Classes in Regular Expressions
Bracket Expressions
OR Operator in RegEX
DOT Operator in RegEX
Greedy and Lazy Matching
Hands-on Exercises on Regular Expressions
Regularizing Number Ranges
Exception Handling in Java
What is an Exception in Java?
Error vs Exception in Java
Checked and Unchecked Exceptions in Java
Throws Declaration in Java
Try and Catch Block (Exception Handling) in Java
'Finally' Block in Java
Date and Time Operations (Revised in Java 8)
Local Date and Time Operations in Java
Custom Date and Time Operations in Java
Future and Past Date Operations in Java
Future and Past Time Operations in Java
Date Difference Calculation in Java
Time Difference Calculation in Java
DateTime Formatter in Java
Special Classes in Java
Math Class in Java
StringBuilder Class in Java
StringBuilder Methods in Java
Scanner Class in Java
Random Class (for creating random numbers) in Java
UUID Class in Java (for creating universally unique string IDs)
Working with File System in Java
How to Read a Text File in Java?
Apache Commons IO
How to Edit a Text File in Java?
Hands on Exercises with Text Files in Java
Copy and Move (Rename) a Text File in Java
Apache POI Setup
Reading Excel Data in Java
Read Excel Data into a 2 D Array in Java
Write Data in Excel Sheet in Java
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.
Instructor Details
- 4.2 Rating
929 Reviews
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
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
Quality Score
No CourseDuck member has rated this course yet. Taken it? Give each part a thumbs up or down.
Overall Score : 84 / 100









