Java

Java

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Section 1: Getting Started

7Lessons ·
- 1: Installing the JDK and Setting Up an IDE
  
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- 2: Understanding the JVM, JRE, and JDK
  
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- 4: Compiling and Running with javac and java
  
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- 5: Java Version History and LTS Releases
  
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- 6: Setting Up IntelliJ IDEA for Java Development
  
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- 7: Setting Up Eclipse for Java Development
  
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Section 2: Core Syntax

17Lessons ·
- 17: Arrays in Java
  
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Section 3: Object-Oriented Java

18Lessons ·
- 29: Method Overriding vs Overloading
  
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- 31: Interfaces and Default Methods
  
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- 37: Nested and Inner Classes
  
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- 38: Anonymous Classes
  
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- 39: The Object Class: equals, hashCode, toString
  
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Section 4: Collections Framework

10Lessons ·
- 44: ArrayList vs LinkedList
  
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- 45: HashSet vs TreeSet vs LinkedHashSet
  
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- 46: HashMap, TreeMap, and LinkedHashMap
  
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- 48: Comparators and Comparable
  
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Section 5: Exception Handling

8Lessons ·
- 54: Try-Catch-Finally
  
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Section 6: Generics

6Lessons ·
- 62: Bounded Type Parameters
  
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- 63: Wildcards in Generics
  
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Section 7: Functional Java

12Lessons ·
- 68: Functional Interfaces
  
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- 69: Built-In Functional Interfaces: Function, Predicate, Supplier
  
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- 71: Intermediate Stream Operations
  
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- 72: Terminal Stream Operations
  
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- 74: Grouping and Partitioning with Streams
  
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- 77: Parallel Streams
  
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- 78: Practice Exercise: Processing a Dataset with Streams and Collectors
  
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Section 8: Concurrency

13Lessons ·
- 79: Threads and the Runnable Interface
  
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- 80: Thread Lifecycle
  
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- 83: ReentrantLock and Explicit Locking
  
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- 85: Thread Pools and ExecutorService
  
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- 86: CompletableFuture for Async Code
  
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- 87: Concurrent Collections: ConcurrentHashMap
  
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- 89: Producer-Consumer with BlockingQueue
  
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- 90: Virtual Threads (Project Loom)
  
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Section 9: I/O and NIO

8Lessons ·
- 92: File I/O with java.io
  
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- 93: Buffered Streams and Readers
  
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- 96: Watching the Filesystem with WatchService
  
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Section 10: JVM Internals

8Lessons ·
- 101: Class Loading Explained
  
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- 103: The G1 and ZGC Collectors
  
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- 104: Memory Areas: Heap, Stack, and Metaspace
  
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- 106: Tuning JVM Memory with Flags
  
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Section 11: Modern Java Features

8Lessons ·
- 110: Pattern Matching for instanceof
  
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- 113: Virtual Threads and Structured Concurrency
  
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Section 12: Build Tools and Project Structure

7Lessons ·
- 116: Building Projects with Maven
  
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- 117: The Maven Lifecycle and POM
  
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- 118: Maven Plugins and Profiles
  
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- 119: Building Projects with Gradle
  
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- 120: The Gradle Build Lifecycle
  
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Section 13: Testing

10Lessons ·
- 123: Unit Testing with JUnit 5
  
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- 128: Test Coverage with JaCoCo
  
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- 130: Property-Based Testing Concepts in Java
  
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- 132: Continuous Integration for Java Projects
  
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Section 14: Databases and Persistence

7Lessons ·
- 135: Connection Pooling with HikariCP
  
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- 136: Introduction to JPA and Hibernate
  
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- 138: JPQL Queries
  
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- 139: Transaction Management in JPA
  
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Section 15: Networking

6Lessons ·
- 140: Sockets in Java
  
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- 145: WebSockets in Java
  
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Section 16: Design and Best Practices

18Lessons ·
- 146: The Singleton Pattern in Java
  
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- 160: Writing Clean, Idiomatic Java
  
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- 161: Effective Java Best Practices
  
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- 162: Code Review Habits for Java Projects
  
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- 163: SOLID Principles in Java
  
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Section 17: Reflection and Annotations

5Lessons ·
- 164: Java Reflection API Basics
  
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- 167: Annotation Processing Basics
  
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Section 18: Logging and Diagnostics

6Lessons ·
- 170: Debugging Java Applications in an IDE
  
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- 171: Remote Debugging Java Applications
  
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- 172: Profiling with JFR and VisualVM
  
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- 173: Heap Dump Analysis Basics
  
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- 174: Thread Dump Analysis
  
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Section 19: Date, Time, and Internationalization

6Lessons ·
- 175: The java.time API in Depth
  
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- 179: Internationalization with ResourceBundle
  
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Section 20: Java Platform Module System

4Lessons ·
- 181: Understanding the Java Platform Module System (JPMS)
  
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- 182: Defining Modules with module-info.java
  
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- 184: Services and Service Loaders in JPMS
  
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Section 21: Security in Java

5Lessons ·
- 185: The Java Security Manager (and Its Deprecation)
  
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- 186: Cryptography with the javax.crypto Package
  
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- 187: Secure Password Hashing in Java
  
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- 189: Preventing Common Security Vulnerabilities in Java Code
  
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Section 22: Advanced Collections and Data Structures

10Lessons ·
- 192: Implementing a Binary Search Tree in Java
  
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- 193: Implementing an AVL Tree in Java
  
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- 194: Implementing a Graph and BFS/DFS in Java
  
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- 196: Implementing a Trie in Java
  
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- 199: Weak References and WeakHashMap
  
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Section 23: More Concurrency Patterns

6Lessons ·
- 200: Fork/Join Framework for Parallel Tasks
  
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- 202: Semaphores in Java
  
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- 205: The Actor Model Concept in Java
  
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Section 24: Compression, Files, and System Integration

4Lessons ·
- 207: Watching Directories with WatchService Revisited
  
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- 208: Running External Processes with ProcessBuilder
  
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Section 25: GUI Programming

6Lessons ·
- 210: Introduction to JavaFX
  
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- 212: Layouts and Scene Graph in JavaFX
  
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- 213: Handling Events in JavaFX
  
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- 214: Building a Simple Todo App with JavaFX
  
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- 215: An Overview of Swing for Legacy Applications
  
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Section 26: Practical Projects

18Lessons ·
- 225: Building a Tic-Tac-Toe Game with JavaFX
  
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- 232: Building a Simple Text Editor with Swing
  
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Section 27: Data Structures and Algorithms

6Lessons ·
- 234: Big-O Notation with Java Examples
  
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- 237: Dynamic Programming Patterns in Java
  
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- 238: Greedy Algorithm Patterns in Java
  
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- 239: Backtracking Patterns in Java
  
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Section 28: Interview and Algorithm Practice

14Lessons ·
- 240: Implementing Sorting Algorithms in Java
  
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- 242: Solving Common Coding Interview Problems in Java
  
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- 243: Solving Common Dynamic Programming Problems in Java
  
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- 244: Solving Graph Traversal Problems in Java
  
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- 245: Time and Space Complexity Analysis in Java
  
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- 246: Common Java Interview Questions on Collections and Concurrency
  
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- 247: Common Java Interview Questions on OOP Principles
  
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- 248: Common Java Interview Questions on JVM Internals
  
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- 252: Mock Coding Interview Walkthrough in Java
  
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- 253: System Design Basics for Java Backend Roles
  
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Section 29: JSON and Data Interchange

4Lessons ·
- 254: Parsing and Generating JSON with Jackson
  
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- 255: Parsing and Generating JSON with Gson
  
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- 256: Working with XML: JAXB Basics
  
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- 257: Working with Protocol Buffers in Java
  
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Section 30: More Concurrency Utilities

5Lessons ·
- 258: StampedLock for Optimistic Reads
  
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- 260: ThreadLocal Variables
  
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- 261: Completable Pipelines with CompletableFuture Chaining
  
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Section 31: More Collections and Streams Practice

5Lessons ·
- 263: NavigableMap and NavigableSet
  
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- 264: The Spliterator Interface
  
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- 266: Practice Exercise: Building a Word Frequency Counter with Streams
  
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- 267: Practice Exercise: Grouping and Aggregating Sales Data with Streams
  
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Section 32: More File and System Programming

4Lessons ·
- 268: RandomAccessFile for Direct File Access
  
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- 269: File Locking in Java
  
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Section 33: Standard Library Deep Dive

10Lessons ·
- 273: The StringBuilder and StringBuffer Compared
  
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- 274: The Objects Utility Class
  
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- 275: The Arrays Utility Class
  
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- 276: The Collections Utility Class
  
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- 277: Formatting Text with String.format and Formatter
  
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- 278: The java.text Package for Number and Date Formatting
  
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- 279: BigInteger and BigDecimal for Precise Arithmetic
  
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- 280: The Random Class and SecureRandom
  
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- 281: The Scanner Class for Input Parsing
  
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Section 35: More Testing and Quality

4Lessons ·
- 291: Static Analysis with SpotBugs and Checkstyle
  
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Section 36: More Design Patterns and Architecture

6Lessons ·
- 296: Layered Architecture in Java Applications
  
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- 297: Hexagonal Architecture Concepts in Java
  
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Section 37: Career and Ecosystem

5Lessons ·
- 299: When to Reach for Spring Boot
  
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- 300: Preparing for Java Certification Exams (OCP)
  
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- 301: Contributing to Open Source Java Projects
  
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- 302: Reading and Navigating a Large Legacy Java Codebase
  
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Section 39: More Enterprise Concepts

4Lessons ·
- 308: An Overview of JNDI
  
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- 309: An Overview of JMX for Application Monitoring
  
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- 310: Understanding Application Servers vs Servlet Containers
  
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- 311: An Introduction to Servlets and the Servlet Lifecycle
  
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Section 40: Advanced JavaFX

4Lessons ·
- 312: Data Binding in JavaFX
  
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- 314: Styling JavaFX Apps with CSS
  
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- 315: Packaging a JavaFX Application for Distribution
  
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Section 41: More Interview Practice

4Lessons ·
- 319: Practice Exercise: Timed Mock Assessment on Core Java
  
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