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Java Mastery: From First Program to JVM Internals
Master modern Java, concurrency, streams, and the JVM — from syntax fundamentals to virtual threads and pattern matching
5.05 reviews206 learners
- Beginner
- 4h 25m video
- 42 lectures
- English
- Captions
- Updated 2026
Taught by ProgLang MainSt.
- 4h 25m of on-demand video
- 42 lectures across 6 sections
- One-off payment — no subscription
- Lifetime access on web and mobile
- Closed captions (English)
Curriculum
6 sections42 lectures4h 25m total
- Why Java Was Invented4:51
- Hello, Java: Your First Runnable Program4:47
- Variables, Primitives, and Reference Types8:29
- Operators and Expressions10:00
- Strings and Text Manipulation8:14
- Reading Input and Talking to the User7:32
- The JVM Ecosystem at a Glance4:02
- If, Else If, and Ternary Expressions5:30
- Switch Statements and Switch Expressions7:21
- For, While, and Do-While Loops6:08
- Break, Continue, and Labelled Loops7:21
- Arrays and Iteration8:56
- Design Philosophy and Honest Tradeoffs2:52
- Defining and Calling Methods7:52
- Classes, Constructors, and Fields4:51
- Inheritance and Polymorphism Visualized8:22
- Interfaces and Abstract Classes in Practice5:43
- Records: Modern Data Carriers5:28
- JVM, JRE, JDK: The Stack Demystified4:07
- Lists, Sets, and Maps7:46
- Generics: Type Safety Without Casts6:20
- Iterating with Iterator and For-Each4:50
- Sorting and Comparing Objects5:47
- Common Algorithms with the Collections API7:56
- Adoption, Benchmarks, and Where Java Lives5:02
- Threads, Runnables, and the Classic Model5:59
- ExecutorService and Thread Pools6:09
- CompletableFuture and Async Composition6:19
- Virtual Threads with Project Loom7:43
- Parallel Streams and Fork/Join7:42
- Bytecode, Class Loading, and the JIT4:57
- Lambdas and Functional Interfaces8:30
- Stream API: Map, Filter, Reduce6:45
- Collectors and Grouping6:16
- Optional: Banishing Null Pointer Exceptions7:08
- Try-With-Resources and Exception Idioms7:48
- Pattern Matching, Sealed Classes, and Where Java Is Heading5:19
- Memory Model: Heap, Stack, and Metaspace4:44
- Garbage Collection Strategies Compared4:21
- Classic Design Patterns in Idiomatic Java5:32
- Reflection, Annotations, and the Meta-Layer4:59
- Java Module System and the Platform's Future4:45
About this course
This course contains the use of artificial intelligence. Java has quietly powered the modern world for three decades — running banks, streaming platforms, Android apps, big data pipelines, and the backend services behind nearly every Fortune 500 company. And it is not standing still. With virtual threads, records, sealed classes, pattern matching, and a revitalized release cadence, today's Java is leaner, more expressive, and more competitive than ever. If you want a language that pays well, runs everywhere, and g…
Before you start
- Basic computer literacy and comfort installing software
- A computer (Windows, macOS, or Linux) capable of running the JDK
- Willingness to experiment with code and read error messages carefully
- No prior Java experience required — we start from the very beginning
- Familiarity with any programming language is helpful but not necessary
Who it’s for
- Complete beginners who want a serious, modern introduction to Java
- Developers from Python, JavaScript, C#, or other languages moving to the JVM
- Intermediate Java programmers who want to modernize and fill knowledge gaps
- CS students preparing for internships, interviews, or backend roles
- Engineers targeting Android, enterprise, or big data career paths
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