Java is a versatile, object-oriented programming language widely used for building applications across platforms. Here’s a breakdown of its core concepts:
📚 1. Fundamentals
- Syntax: Java uses a C-like syntax with curly braces
{}
for code blocks. - Data Types: Includes primitive types (
int
,double
,boolean
) and objects. - Variables: Declared with
type variableName = value;
- Operators: Arithmetic (
+
,-
,*
,/
), comparison (==
,>
,<
), etc.
🛡️ 2. Object-Oriented Programming (OOP)
- Classes & Objects: Blueprints for creating instances.
- Inheritance: Extending classes to reuse code.
- Polymorphism: Method overriding and interfaces.
- Encapsulation: Bundling data with methods that operate on it.
- Abstraction: Hiding complex implementation details.
📦 3. Packages & Imports
- Packages: Organize code into namespaces (e.g.,
java.util
). - Imports: Use
import package.name;
to access classes.
🧠 4. Key Features
- Platform Independence: "Write once, run anywhere" via JVM.
- Memory Management: Automatic garbage collection.
- Multithreading: Concurrent execution of tasks.
🌐 5. Further Learning
For a deeper dive into Java’s ecosystem and tools:
Explore Java Ecosystem & Tools
Happy coding! 🌟