Table of Contents
Introduction to Java
Java is a versatile, object-oriented programming language that has been a cornerstone of enterprise development for decades.
Core Concepts
Object-Oriented Programming
- Encapsulation: Bundling data and methods that operate on that data within a single unit.
- Inheritance: Creating new classes based on existing classes.
- Polymorphism: Objects of different types can be accessed through the same interface.
Collections Framework
Java provides a comprehensive collections framework that includes:
- List: ArrayList, LinkedList, Vector
- Set: HashSet, TreeSet, LinkedHashSet
- Map: HashMap, TreeMap, LinkedHashMap
Memory Management
- Heap vs Stack: Understanding memory allocation
- Garbage Collection: Automatic memory cleanup
- Memory Leaks: How to avoid common pitfalls