Java developer Course: From Zero to Hired
Java developer Course From Zero to Hired
Perfect for newbies
90%
of our students start with no technical background
Course updated in 2025
100%
industry-relevant curriculum built to meet employer expectations
4,500+ employed grads
rating based on Google reviews
Java developer: Salary
16 750 zł
+22%Increase in remuneration r/y. Source: Nofluffjobs
Did you know?
Java Developer is in high demand. Every time you use a website or app, you’re benefiting from their work. They write and maintain Java code, develop robust applications, work with various frameworks, and ensure high performance and scalability. They also manage databases and server-side logic. Impressive, right?
Employment in focus
We share the same goal — get you hired. With 20% theory and 80% practical tasks, we make it happen.
Market experts as your mentors
Mentors help you learn new topics, review your tasks, point out mistakes, and do live Q&A sessions.
Platform that has it all
Learn through tutorials, interactive tasks, AI quizzes, and group projects — all in one place.
Your perks in every course
Job Referrals
Get access to job openings from our partners before they hit the market.
English lessons
Gain skills to pass interviews and bond with your team.
Job search tips
Craft cover letters and resumes that land interviews.
Job tracker
Easily apply for jobs and track every step of your job hunt.
Mock interviews
Practice for real-world interviews and build your confidence.
This might be your CV
Marta K.
Java developer
Skills
- Develop with core Java concepts including classes, methods, and exception handling
- Utilize Java 8–19 features such as streams, lambda expressions, and new APIs
- Implement data persistence using Hibernate ORM
- Write efficient SQL queries and manage databases
- Create web applications with Spring Boot, focusing on automated configurations
- Handle multithreading for optimized data processing
- Understand web protocols and architecture through the OSI model and HTTP
- Work with version control using Git and command-line tools
Technologies
90%
of Mate grads entered the tech field for the first time
What's covered
Course roadmap
Podstawy Javy
11 topics
Git i Terminal
6 topics
Terminal is one of the main tools of any developer. In this module, you'll explore basic terminal commands, what Git version control is and how to use it.
Topics
- Konfiguracja środowiska
- Komendy wiersza poleceń
- Podstawy GIT
- Praca z gałęziami
- Praca z historią edycji
- Praca ze zdalnym repozytorium
Podstawy Javy — rozwinięcie
8 topics
Eager to improve your Java proficiency? Get ready for type casting, switch case, classes, as well as a more advanced look at classes, arrays and methods. Oh, and a little extra, too 🤫
Topics
- Konfiguracja środowiska
- Rzutowanie typów
- Tablice — rozwinięcie
- Instrukcja switch
- Klasy
- Klasy — rozwinięcie
- Metody — rozwinięcie
- Ćwiczenia
Java — moduł zasadniczy
26 topics
A behemoth of a module. We'll introduce you to Java 8 through 19, memory, wrappers, strings, abstract classes, bit manipulation, hashcode, patterns... just countless fascinating topics!
Topics
- Rozwiązywanie zadań na GitHubie
- Klasy: memory, wrapper, String
- Manipulowanie bitami
- Programowanie obiektowe
- Interfejs kontra klasa abstrakcyjna
- Wyjątki
- Pliki
- Metody: equals, hashCode i clone
- Wzorce projektowe i rekurencja
- Generyki
- ArrayList
- LinkedList
- PECS
- HashMap
- Ćwiczenia z tablicami
- Niemutowalność (immutability)
- Interfejsy: set, queue, stack i comparator
- Java JUnit
- Java 8 — cz. 1
- Java 8 — cz. 2
- Java 8 — cz. 3
- Usprawnienia w Javie 9-19
- Ćwiczenia ze Stream API
- Java SOLID
- Wstrzykiwanie zależności
- Logger
Podstawy SQL
11 topics
Semantically speaking, SQL closely resembles English, so you are in for a swift acquisition. We'll learn to use it with databases, to group, filter, sort and source data at wish.
Topics
- Wprowadzenie do SQL
- Klauzula SELECT
- Klauzula WHERE
- Wartość NULL i klauzule: LIKE, BETWEEN oraz IN
- Klauzula ORDER BY, LIMIT i DISTINCT
- Aliasy
- Funkcje agregujące
- Klauzula GROUP BY
- Klauzula JOIN
- Funkcje
- Klauzula HAVING
Java Hibernate
14 topics
courses.java-hibernate-pl_about_course
Topics
- Wprowadzenie do baz danych
- Wprowadzenie do JDBC
- Encje i transakcje w Hibernate
- Relacje między encjami i cykl życia
- JPA i typy kaskadowe
- Leniwa inicjalizacja (lazy loading)
- Criteria API
- Poziomy izolowania transakcji
- Problem N+1
- Narzędzia do zarządzania bazami danych
- Ćwiczenia z SQL
- Dziedziczenie w Hibernate
- Optymalizowanie wydajności
- Poziomy pamięci podręcznej w Hibernate
Działanie sieci
6 topics
And now, we will master the basics on our own. After all, every day, you somehow interact with the Internet, but have you thought about how the World Wide Web works? This module will help you understand how our devices interact and exchange data with the Internet and what the Internet is all about.
Topics
- Wprowadzenie do sieci
- Model OSI
- HTTP
- Szyfrowanie
- Internetowe API
- Bezpieczeństwo w sieci
Framework Spring Boot
20 topics
Spring Boot is like Spring, but on another level. There's no need for manual server configuration, nor data source and dependency setup. It's *the* time savior for Java developers.
Topics
- Wprowadzenie do Spring Boot
- Cykl życia fasolek
- Spring Boot Web
- Spring Boot Web: Data Transfer Object
- Spring Boot Web: mappery
- Spring Data JPA
- Zapytania kryterialne w Spring Boot
- Spring Transactional
- GlobalExceptionHandler i walidacja danych
- Paginacja, sortowanie i swagger
- Praca z zewnętrznymi API
- Spring Boot Security - podstawy
- Spring Boot Security
- JSON Web Tokens
- Ćwiczenia ze Spring Boot
- Docker w Spring Boot
- Testowanie Spring Boot
- Deployment projektu do AWS
- Spring Boot AOP
- Projekt do portfolio
Wielowątkowość
9 topics
Multithreading allows processing larger amounts of data faster and more efficiently, thanks to a more efficient CPU use, but comes with its own set of challenges. Let's address them!
Topics
- Wprowadzenie do wielowątkowości
- Wątki
- Model pamięci Javy (JMM)
- Manipulowanie wątkami
- Blokady obiektów
- Zakleszczenie
- Interfejs ExecutorService i obiekty typu Future
- Klasa CompletableFuture
- Współbieżne kolekcje danych
Zdobywanie pracy
7 topics
In this module, you will prepare your CV, cover letter, and profiles in professional socials. You will train to pass technical and non-technical interviews. Let's go to work!
Topics
- Wprowadzenie
- Résumé (CV)
- List motywacyjny
- Profil na LinkedInie
- Gdzie i jak szukać pracy
- Składanie aplikacji krok po kroku
- Przygotowanie do rozmowy kwalifikacyjnej
118
Topics
2
Projects
From zero to hired
What’s your path to becoming a Java developer?
Land your job in tech
Start your new job as a Java developer.
Book a call
Do I need a technical background? When can I start?
- We'll answer all your questions
- Help you choose the right course
- Provide exclusive offers
Skill level after the course
Mate graduates ace technical interviews
Who will guide you?
Coaches
Mentors
English Teachers
Education coordinators
Employment coordinators
Book a call
Let's get in touch
- We'll answer all your questions
- Help you choose the right course
- Provide exclusive offers
Faq
Have some more questions? We have the answers.
How will I study?
Learning is self-paced – you decide when and how many hours you want to dedicate to your studies. Our mentors will evaluate your work and answer your questions. You'll connect with classmates via chat and group video calls. Additionally, you'll receive lifetime access to the course, giving you the freedom to learn on your own terms.
Can I fit studying at Mate with other activities?
Yes, you can! Our courses are designed to let participants learn at their own pace, with continuous mentor support throughout the program.
Will I get a certificate upon completion?
Sure! After finishing our course, you'll get a certificate. More than 4,500 of our graduates use it to show their skills on LinkedIn and other social media. But our main focus is helping you find a job, and we'll do everything we can to support you in that.
How do I choose a profession?
Do I need math or tech background to enroll?
No, you don’t need math or a technical background to enroll. In fact, 9 out of 10 Mate students come from non-technical backgrounds. Our job is to teach you the skills you need and help you land a job in tech.
How do I enroll?
To start learning at Mate academy, simply apply, and our representative will get in touch with you shortly to provide more details. You’ll gain access to the course as soon as the payment is completed.
Are there any age limits for this course?
Our courses are open to people of all ages. However, our job guarantee applies only to those who are of working age according to their country’s laws at the time of course completion.
How are you so sure that l'll find a job?
For over 10 years, we’ve been helping people kickstart their tech careers — and we’ve gotten pretty good at it.
Our courses are built around what companies actually want, with tons of hands-on practice to get you job-ready. And you’re never on your own — we’ll guide you every step of the way, from polishing your resume to nailing your interviews.
The best part? 80% of our grads land a tech job just a few months after finishing the course.
How does money-back guarantee work?
If you pay for and complete the course, actively search for a job with our support for 16 weeks, and still don’t receive any job offers, we’ll refund your money.
What jobs can I get after finishing the course?
Graduates of the Java developer course often land their first jobs in positions such as Java developer, Java Software engineer, Backend developer, or Software developer.