Java Programming Fundamentals

Java Programming Fundamentals

Java is one of the most popular programming languages for enterprise applications. It's known for its portability and object-oriented nature.

Basic Concepts

• Object-Oriented Programming: Encapsulation, inheritance, and polymorphism.
• Classes and Objects: Blueprints for creating objects.
• Methods: Functions within a class.
• Variables: Storage for data.
• Data Types: Primitive (int, double, char) and non-primitive (String, Array, Object).

Hello World Example

public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

Common Java Libraries

• Java Core Libraries: java.lang, java.util, java.io.
• JavaFX: For creating desktop applications.
• Apache Commons: General-purpose utilities.
• JUnit: For unit testing.

Development Environment

• Java Development Kit (JDK) for compiling and running Java programs.
• Integrated Development Environment (IDE) like IntelliJ IDEA, Eclipse, or VS Code.
• Command line tools for compiling and running.