Java is a widely-used object-oriented programming language known for its portability, robustness, and ease of use. Here's an overview of some key concepts in
Java theory:
1. **Object-Oriented Programming (OOP) Principles**
- **Encapsulation:** Bundling data (variables) and methods (functions) that operate on the data into a single unit called a class. It restricts direct access to
some of the object's components.
- **Inheritance:** A mechanism where one class (subclass) inherits the fields and methods of another class (superclass), allowing for hierarchical
classification.
- **Polymorphism:** The ability of different classes to be treated as instances of the same class through a common interface. It allows methods to do different
things based on the object it is acting upon.
- **Abstraction:** Hiding the complex implementation details and showing only the essential features of the object.
2. **Java Basics**
- **Syntax:** Java has a C-like syntax with a focus on clarity and readability.
- **Data Types:** Java supports primitive data types (int, float, double, char, boolean) and reference data types (arrays, strings, objects).
- **Variables:** Containers for storing data values. Types include local variables, instance variables, and class/static variables.
3. **Control Structures**
- **Conditional Statements:** `if`, `else if`, `else`, and `switch` statements for decision-making.
- **Loops:** `for`, `while`, and `do-while` loops for iteration.
Java theory:
1. **Object-Oriented Programming (OOP) Principles**
- **Encapsulation:** Bundling data (variables) and methods (functions) that operate on the data into a single unit called a class. It restricts direct access to
some of the object's components.
- **Inheritance:** A mechanism where one class (subclass) inherits the fields and methods of another class (superclass), allowing for hierarchical
classification.
- **Polymorphism:** The ability of different classes to be treated as instances of the same class through a common interface. It allows methods to do different
things based on the object it is acting upon.
- **Abstraction:** Hiding the complex implementation details and showing only the essential features of the object.
2. **Java Basics**
- **Syntax:** Java has a C-like syntax with a focus on clarity and readability.
- **Data Types:** Java supports primitive data types (int, float, double, char, boolean) and reference data types (arrays, strings, objects).
- **Variables:** Containers for storing data values. Types include local variables, instance variables, and class/static variables.
3. **Control Structures**
- **Conditional Statements:** `if`, `else if`, `else`, and `switch` statements for decision-making.
- **Loops:** `for`, `while`, and `do-while` loops for iteration.
