Java

• Java Learning Roadmap

Stage 1: Programming Fundamentals

• Setting Up JDK, PATH, and VS Code
• JDK, JRE, and JVM
• Java Syntax Basics
• Java Control Flow
• Java Methods
• Arrays and Strings
• Input/Output in Java

Stage 2: Object-Oriented Programming

• Classes and Objects
• The 4 Pillars of OOP
  • Use Cases of Composition and Inheritance
• Abstract Class and Interface
• Overriding and Overloading
• String Pool
• equals() and hashCode() methods
• Differences between == Operator and equals() Method
• What happens if hashCode() method always returns the same value?
• final, finally, and finalize

Stage 3: Core Java Libraries

• The Java Collection Framework Hierarchy
  • ArrayList and LinkedList
  • ArrayList and Vector
  • HashSet
  • HashMap
    • Internal Working of HashMap
    • Map.entry()
  • HashMap and Hashtable
  • HashMap vs TreeMap
• Iterator
• Checked and Unchecked Exceptions
• Handling Large Datasets in Java

Stage 4: Modern Java Features

• Java 8
  • Lambda Expressions
  • Create a Stream
  • Intermediate Operations
  • Terminal Methods
  • Default Methods
  • Optional

Stage 5: Concurrency and Memory Management

• Java Virtual Machine
• Garbage Collection
• Threads
  • Thread Lifecycle
  • Thread Synchronization

Stage 6: Tools and Ecosystem

• Ant Build System

Stage 7: Frameworks and Application Development

• Java EE

Stage 8: Best Practices and Beyond

• Writing Clean and Maintainable Code
  • SOLID Principles
  • Strategy Design Pattern
  • Optimizing Java Code