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The Complete Java Certification Course (Udemy.com)

Become a confident industry ready core Java developer and get certified as a Java professional!

Created by: Job Ready Programmer

Last updated November 2025

Our take

Based on the ratings of 30,462 students, a sample of their written reviews and the syllabus, as the course stood in November 2025. No course pays to be reviewed.

This is an 18 hour core Java course built around Job Ready Programmer's own certification prep, taking someone with zero coding background through syntax, object orientation, collections, generics, concurrency, and JDBC. Along the way there are three practical projects, a car dealership system, a stock market data processor, and a data analytics tool, instead of the usual toy game clone. It leads toward the OCAJP 1Z0-808 exam, so anyone chasing that credential has a clear reason to pick it.

Reviewers point to instructor Imtiaz Ahmed's detailed, step-by-step explanations as a strength, particularly around object orientation. Students say the pacing is organized and the repetition of terms helps concepts stick. The complaints cluster around a handful of specific spots: a few coding exercises have typos in the sample solutions, one reviewer found the lesson length confusing for a beginner, and another wanted downloadable lecture code instead of scrubbing through video. One reviewer also noted that lambda expressions and file handling get less depth than the basics do.

With 30,462 ratings averaging 4.7 and content refreshed as recently as November 2025, this one holds up well against other Java certification options on the site. It runs longer than a quick-syntax overview, which suits someone building real depth rather than cramming. If the exercise glitches get fixed, this is an easy recommendation for anyone starting Java from nothing and wanting a credential at the end of it.

Best forComplete beginners who want object orientation explained properly before anything else.
Skip it ifYou already know Java and want a fast refresher on one advanced topic like streams.

Pros

  • Three industry-style projects, not a Flappy Bird clone, per the course description
  • Heavy focus on object orientation that reviewers say other courses skip over
  • Concurrency gets real depth, 157 minutes across seven lectures
  • Content updated as recently as November 2025, unusual for a course published in 2017

Cons

  • A few coding exercise solutions have typos that keep the code from running, per reviews
  • One reviewer found the lesson length confusing to follow as a beginner
  • Lecture code isn't easy to download, so reviewing past videos means scrubbing footage
The lectures are quite good - no question. The course would be much better if the code was available for the lectures is available.
Wade Henderson, a student

Listed as all levels, but reviews and the object-orientation focus point to true beginners as the best fit.

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What you will learn

  • How to write Java Programs from scratch and have loads of fun in the process
  • Go from zero to hero in writing industry ready Java programs
  • Gain enough experience to pass a core Java Programming interview and perform well on the job
  • Be prepared to take the Java Certification Exam for OCAJP 1Z0-808

Course content

28 sections · 67 lectures · 18 hours of video 47 quizzes, 45 coding exercises, 7 articles

  1. 1Introduction 1 free preview2 lectures · 8 min
  2. 2Development Environment Setup 3 free previews5 lectures · 27 min
  3. 3Getting Started2 lectures · 14 min
  4. 4The Very Basics of Java 1 free preview4 lectures · 1.2 hours
  5. 5Coding Exercises: Basics of Java6 quizzes
  6. 6Understanding Methods2 lectures · 53 min
  7. 7Coding Exercises: Methods5 quizzes
  8. 8Understanding Object Orientation8 lectures · 2 quizzes · 1.7 hours
  9. 9Coding Exercises: Object Oriented Programming6 quizzes
  10. 10Putting it Together with Strings, Nested Loops and Debugging4 lectures · 1.2 hours

Who it is for

The instructor says it suits

  • Anyone interested in breaking into the Java development career
  • Anyone with the desire to learn Java development
  • Anyone who would like to be an Oracle certified Java developer

What you need before you start

  • A computer with Windows or Mac operating system (I provide instructions on how to setup the dev environment for each)
  • The desire to learn the most popular programming language in the world - Java
  • No other prerequisites

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Course Description

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Java Awards Best Paid Course

Welcome to the Complete Java Certification Course!

Are you a complete beginner aiming to learn Java from scratch?

Do you want to build robust applications or confidently tackle coding interviews?

Have you struggled with understanding Object-Oriented Programming (OOP) or modern Java features like Lambdas and Streams?

Do you need a hands-on course that bridges theory and real-world application?

If you answered yes to any of these questions, you’re in the right place. This course is carefully crafted to help you become a job-ready Java developer and succeed in certification exams.

What Makes This Course Stand Out?

  1. Comprehensive & Practical: We cover everything from Java fundamentals to advanced topics like multi-threading, JDBC, and functional programming with Lambdas and Streams.

  2. Hands-On Projects: Reinforce your skills by working on practical assignments—like building a car dealership management system or processing stock market data.

  3. Beginner-Friendly: No prior programming experience? No worries! We guide you through every core concept, ensuring a strong foundation in Java.

  4. Clear Explanations & Step-by-Step Guidance: Complex topics such as concurrency or generics are broken down into easy-to-understand lessons.

  5. Job-Ready Skills: By the end of the course, you’ll master the Java Programming language, learn how to apply it effectively to solve problems and enhance your career prospects.

Why This Course Is Essential:

The Complete Java Certification Course is designed to help you master the most in-demand and critical components for becoming a Core Java developer. Especially if you're going for a job interview or have a Java Project that needs your best performance. This course assumes no prior Java experience so prior Java so it will take you from zero to hero!

The topics covered include Object Orientation which I think is not stressed enough in other Java courses so I've got a special focus on that throughout the lectures. You'll get plenty of practice writing classes and interfaces as well as countless methods with loops and if-else statements, Exception Handling and File Processing as well as how to debug software using Eclipse. You'll also be mastering the Collections Framework and diving deep into Java Generics. You'll learn all there is to know about Multi-Threading and the JDBC API for working with a MySQL Database.

There are also Practical Projects scattered throughout the course so that you can practice the concepts as you learn them. For example one of the projects is related to a car dealership management system and another assignment involves processing files with stock market data. So as you can see, I tried to keep the projects professional and industry-relevant rather than cloning a game like Flappy Bird.

I want this course to be the ultimate go-to resource for anyone who is looking to become a core Java programmer so I intend on adding more content to this course based on new technologies and student feedback. The content is Java 9 ready which means I'll show you how to upgrade to the latest version of Java which is version 9 and I'll teach you how to configure Eclipse to work with both Java 8 as well as version 9.

Latest updates include Lambdas and Streams with Java 9 Features.

Important Announcement: This course will be constantly updated with more assignments, quizzes, and lectures to enrich your knowledge of Java.


Topics covered in the Complete Java Certification Course:

  • Java Basics

    • Variables

    • Data Types

    • Arrays

    • Control Flow

    • Methods and Method Visibility

  • Object-Oriented Programming in Java

    • Classes and Objects

    • Program Flow, Structure and Constructors

    • Application Runtime

    • Java behind-the-scenes

    • Class Inheritance

    • Interfaces

    • Abstract Classes

  • Connecting the dots

    • Strings

    • While, For Loops, and Nested For Loops

    • Debugging 101

  • PRACTICAL PROJECT: Car Dealership

  • Building and Deploying Java Programs with JAR Files

    • Cloning Java Objects

    • Java Comparable Interface

    • Serialization in Java

    • Compile Java Programs with Command Line

    • Create and Deploy Executable Programs using JARs

    • Create JAR File with Command Line

  • File Processing

    • File Processing with Exception Handling and Keyboard Input

    • Buffered File Reader with Try Catch and Finally

    • Try with Resources and the AutoCloseable Interface

  • The Collections Framework

    • Lists and Custom Types

    • HashSet, LinkedHashSet and Hashcode

    • Collection Methods

    • Comparable Interface

    • HashMap, LinkedHashMap and TreeMap

  • PRACTICAL PROJECT: Stock Market Data Processor

  • Java Generics with Wildcards

  • PRACTICAL PROJECT: Data Analytics Processor

  • Concurrency in Java

    • Threads and Runnable Interface

    • Thread Safety Using Synchronization

    • Producer Consumer Pattern Using (1) wait() and notify() and (2) BlockingQueue

    • Thread Pools and Executor Framework

  • JDBC API (Java Database Connectivity)

  • JShell and Java 9 Features

  • Lambda Expressions

    • Functional Interfaces

    • Lambdas with practice assignments

    • Streams API


Key Benefits of Java Mastery

  1. Versatility & Demand: Java powers everything from enterprise applications to Android development. Mastering it opens up numerous career paths.

  2. Strong Foundation: A solid grasp of OOP, data handling, and concurrency sets you up to learn any new language or framework with ease.

  3. High Earning Potential: Skilled Java developers remain in high demand across multiple industries.

  4. Real-World Skills: Practical projects and industry-relevant examples ensure you can hit the ground running in any Java-related role.


IMPORTANT NOTE FOR STUDENTS:

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Instructor Details

Job Ready Programmer

You can’t learn programming from reading books or online fill-in-the-blank type tutorials. Especially the online tutorials with browser based exercises where you code directly in your browser. The problem with that approach is that it doesn’t provide practical experience. It provides an illusion of learning something as it tugs you along to complete an assignment that’s more of a fill-in-the-blank type problem. A student feels like they’ve learned something but that knowledge does not stick. Unfortunately that experience will not help in an interview nor an actual project. Valuable time ends up going to complete waste. At JRP (JobReadyProgrammer), we don’t follow hype. We do what works! We take a traditional route to teaching how to code advancing slowly & patiently in the lectures often repeating key concepts in multiple different ways to help students really solidify the knowledge and mold their foundation to discover how to code properly and then boy do we test the skills! Students are put right in the middle of a practical real-world programming assignment to apply everything they've learned. So enough of those “key in the next few commands to fill in the puzzle and we’ll advance you” kind of tutorials. Here you’ll need to roll up your sleeves and get to work on solving practical programming assignments.

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Reviews

4.7

30,462 ratings on Udemy

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

By Vaishali kandekar on 1/2/2025

I’ve found this course incredibly helpful for revisiting Java basics. The instructor, Imtiaz Ahmed, explains everything in a detailed yet simple way, Even though I already have some experience with Java, this course refined my knowledge in a way I couldn’t have anticipated. If you prefer learning through visuals, this course is a great way to speed up your understanding without wasting time.

By Juan Carlos Vadillo on 9/18/2023

The course is great and complete. The way that Imtiaz goes through the topics is amazing, he explains everything, repeats it tries hard to assure that the concept is clear. The only reason that I don't give five stars (I'm giving 4.5) is because in the last quarter of the course with the topics of Concurrency and Threading, JDBC and Lambda expressions there were no Practical Projects or Assignments, in which for this topics that are more advanced concepts would be absolutely beneficial But in general great course

By Nauman Farooq on 12/17/2022

This course is clearly defined. Respected Imtiaz handled the explanation of each line of code during nearly the entire lecture. However, when it comes to the advanced sections of this course, it might be a little difficult for someone with kids and a busy work schedule to understand the concepts. Overall though, this course gives you the opportunity to expand your horizons and become a professional Java developer. Thanks to Udemy and the whole team who created this course.

By Vishal Abrol on 3/27/2020

I liked the way the instructor takes the students on a virtual journey where connecting dots from the previous lectures at every possible point and incrementally adding value and new knowledge points at every stage. Even my 9 yr old is able to understand the basics of it and for me because I have prior knowledge of Java - even I felt its worth the value to invest in this course - It surely added value and boosts confidence.

By Viktor Kalenderski on 2/24/2020

I have no previous experience with Java and this should be taken into consideration. The course is very comprehensive and covers the basic concepts providing plenty examples. I enjoy Imtiaz's approach to learning by doing. He is very practically oriented and the theory is covered on the go. However, most of the basic knowledge points are examined on multiple occasions and he often adds a reminder whenever passing through a major point that has been discussed in another topic. I very much enjoy this approach, but if you don't you may find his teaching discouraging. Another thing that makes impression is the excellent sound processing and diction of the tutor - often neglected by others.

By Ravil Zalya on 12/24/2019

This is truly a very good Java course. I wish I have found Imtia'z classes earlier. I have tried a few other popular java courses on udemy but I felt I was stuck and did not understanding what and why I was doing. Imita's style of teaching is clear and simple. He makes it easy for you. His instruction so far have been the clearest and the simplest I have experience in udemy. A good example is lambdas and streams. Before I have spend months trying to understand what the is functional programming is about and how it works. Imtia's gives it to you in just couple hours easy to understand material. He focuses on the core and most necessary knowledge areas of java. You will not become a java professional just after taking this course. You need to practice. Do not limit yourself on only the exercises from his lectures. Go and find exercises in the internet, there are plenty. Imtia'z course opens the door and gives more confidence to you to further explore the java world. Also his professional and career advises are something that may be of use many. I have a background in finance and am now trying to get into the software development. The database and sql does seem to be a better way to enter the field. I highly recommend this course to anyone who wants an effective, focused learning without loosing the vision of the big picture.

By DevZ on 3/9/2019

After taking other Java courses, this is the Java course to start with if your a beginner. Imtiaz is a great instructor who speaks clearly and gets straight into the core concepts without confusing students with unnecessary code or fancy IDE features. In addition the instructor provides external resources for the students to expand their knowledge and to decide to possibly take a more in-depth course. After completing this course you should have a good understanding of Core Java Concepts. Good work!

By Christopher Huffman on 2/2/2019

Imtiaz is a great instructor and would definitely recommend his courses to others. He puts a lot of effort into his videos and the content is good for beginners. I rated this course 3.5 stars for two reasons. The first is his responsiveness. He does not reply to many questions on the q&a, but most of the questions can easily be found through a quick google search. However, I do feel since it is a paid course, he should reply within a reasonable time. The second is the projects, as the instructions are not as clear as they could be. Despite those two nit-picky things, this is a 5-Star course! He covers A LOT in this course, so be prepared to learn.

By Santiago Amarilla on 1/19/2019

The teacher has a very calm and clear voice, making him easier to understand. So far this course seems to be excellent. I'll update my review afterwards. //Update: System.out.println("I really enjoyed this course, it made me have an intermediate level in java, better said: It gave me the tools to become far better on my own. I'm eager to use these tools to do fun stuff in java. However, i feel like the teacher could be more concise when explaining concepts, i mean, explaining more with less words, in less time (also, graphic assistance could be helpful). In summary: This is a solid, well rounded course. I'll recommend it to anyone with an begginer to begginer-intermediate level in Java.");

By Sravanthi Bitrakanti on 1/1/2019

Previously I worked as a QA engineer where I used to use lot of Java for automation.I had to take break for some personal reasons.I bought this course to quickly brush up all my java skills.I should say this is the best course that anyone can invest.Instructor has so much clarity about the subject.I started this course couple of days back and I'm almost finishing it with so much confidence.Thanks for the course.Can't wait to start another course of you.Will be buying more of your courses.

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Overall Score : 94 / 100