Holczer Balazs Courses
Python Data Structures And Algorithms: Practical Course
4.7 (4,432 Reviews)
Provider: Udemy
Time: 23.6h- 2026
$16.99
VisitConcurrency, Multithreading and Parallel Computing in Java
4.5 (4,034 Reviews)
Provider: Udemy
Time: 14.4h- 2026
$10.99
VisitSoftware Architectures (SOLID) & Design Patterns in Java
4.6 (3,772 Reviews)
Provider: Udemy
Time: 9.4h- 2026
$11.99
VisitIntroduction to Collections, Generics & Reflection in Java
4.5 (3,649 Reviews)
Provider: Udemy
Time: 11h- 2026
$10.99
VisitAlgorithms Data Structures in Java #1 (+INTERVIEW QUESTIONS)
4.7 (3,235 Reviews)
Provider: Udemy
Time: 22.1h- 2026
$13.99
VisitQuantitative Finance & Algorithmic Trading in Python
4.6 (2,714 Reviews)
Provider: Udemy
Time: 18.3h- 2026
$13.99
VisitJava Programming: Step by Step from A to Z
4.5 (2,429 Reviews)
Provider: Udemy
Time: 8.9h- 2019
$84.99
VisitComplexity Theory - Running Time Analysis of Algorithms
4.5 (2,428 Reviews)
Provider: Udemy
Time: 1.9h- 2022
Free
VisitLearn Blockchain Technology & Cryptocurrency in Java
4.7 (1,882 Reviews)
Provider: Udemy
Time: 7h- 2026
$89.99
VisitCryptography and Hashing Fundamentals in Python and Java
4.7 (1,797 Reviews)
Provider: Udemy
Time: 15.3h- 2023
$84.99
VisitMachine Learning and Deep Learning Bootcamp in Python
4.4 (1,719 Reviews)
Provider: Udemy
Time: 31.5h- 2026
$19.99
VisitRecursion, Backtracking and Dynamic Programming in Java
4.5 (1,647 Reviews)
Provider: Udemy
Time: 15.1h- 2026
$11.99
VisitThe Complete SQL And MySQL Course (Updated 2026)
4.7 (1,486 Reviews)
Provider: Udemy
Time: 12.1h
$84.99
VisitAdvanced Algorithms (Graph Algorithms) in Java
4.5 (1,361 Reviews)
Provider: Udemy
Time: 12.5h- 2023
$84.99
VisitJava EE with Vaadin, JPA, Microservices, Spring and Maven
4.7 (1,350 Reviews)
Provider: Udemy
Time: 18.9h- 2023
$89.99
VisitRecursion, Backtracking and Dynamic Programming in Python
4.6 (936 Reviews)
Provider: Udemy
Time: 15.8h- 2025
$15.99
VisitArtificial Intelligence I: Meta-Heuristics and Games in Java
4.5 (848 Reviews)
Provider: Udemy
Time: 9.2h- 2026
$15.99
VisitAlgorithms Data Structures in Java #2 (+INTERVIEW QUESTIONS)
4.6 (826 Reviews)
Provider: Udemy
Time: 12.9h- 2023
$79.99
VisitAlgorithmic Trading & Time Series Analysis in Python and R
4.4 (616 Reviews)
Provider: Udemy
Time: 18.8h- 2023
$89.99
VisitPython Programming - Multithreading, OOP, NumPy and Pandas
4.4 (570 Reviews)
Provider: Udemy
Time: 13.7h- 2023
$79.99
VisitArtificial Intelligence II - Hands-On Neural Networks (Java)
4.4 (518 Reviews)
Provider: Udemy
Time: 3.6h- 2024
$59.99
VisitPublic Key Infrastructure (PKI) with OpenSSL (RSA and ECC)
4.5 (455 Reviews)
Provider: Udemy
Time: 4.7h- 2025
$19.99
VisitRecursion, Algorithms and Data Structures Bootcamp in C++
4.6 (439 Reviews)
Provider: Udemy
Time: 17.8h- 2023
$84.99
VisitREST Microservices with Spring Boot, Maven, JPA and Docker
4.6 (295 Reviews)
Provider: Udemy
Time: 17.4h- 2025
$74.99
VisitArtificial Intelligence III - Deep Learning in Java
4.5 (269 Reviews)
Provider: Udemy
Time: 8.1h- 2024
$64.99
VisitAI and Meta-Heuristics (Combinatorial Optimization) Python
4.5 (247 Reviews)
Provider: Udemy
Time: 17.6h- 2023
$84.99
VisitComputer Vision Bootcamp with Python (OpenCV) - YOLO, SSD
4.4 (245 Reviews)
Provider: Udemy
Time: 13.8h- 2025
$69.99
VisitArtificial Intelligence IV - Reinforcement Learning in Java
4.5 (196 Reviews)
Provider: Udemy
Time: 5.2h- 2025
$59.99
VisitLearn JavaScript with Fun - Build an UFO Hunter Game
4.7 (185 Reviews)
Provider: Udemy
Time: 6.5h- 2019
$64.99
VisitJava SE with Swing, JPA and Maven (+Game Development)
4.4 (158 Reviews)
Provider: Udemy
Time: 15h- 2023
$64.99
VisitNumerical Methods and Optimization in Python
4.4 (128 Reviews)
Provider: Udemy
Time: 14.1h- 2023
$79.99
VisitAdvanced Algorithms and Data Structures in Python
4.6 (74 Reviews)
Provider: Udemy
Time: 10.3h- 2022
$69.99
Visit
Most Recent Review
I like all courses from this lecturer. His way of teaching is amazing and we can learn a lot quickly, no long sessions and no unnecessary explanations.
- Review by Roshan Su on REST Microservices with Spring Boot, Maven, JPA and Docker
Instructor Bio
My name is Balazs Holczer. I am from Budapest, Hungary. I am qualified as a physicist. At the moment I am working as a simulation engineer at a multinational company. I have been interested in algorithms and data structures and its implementations especially in Java since university. Later on I got acquainted with machine learning techniques, artificial intelligence, numerical methods and recipes such as solving differential equations, linear algebra, interpolation and extrapolation. These things may prove to be very very important in several fields: software engineering, research and development or investment banking. I have a special addiction to quantitative models such as the Black-Scholes model, or the Merton-model.
Take a look at my website if you are interested in these topics!

































