- Definition and Structure
- Static class cannot be instantiated and contains only static members
- Created using static keyword in class declaration
- Cannot have instance constructors or inherit from other classes
- Advantages
- Sealed and prevents inheritance bugs
- Provides convenient method grouping without object instantiation
- Accessible quickly and easily for better performance
- Disadvantages
- Cannot implement interfaces
- Makes encapsulation maintenance harder
- Difficult to test due to static methods
- Prone to conflicts with global resources
- Usage Guidelines
- Used for utility classes and singleton design patterns
- Suitable for math operations and string formatting
- Accesses resources like databases and configuration files
- Key Features
- Static data members shared across all class instances
- Static methods accessible directly through class name
- Static constructors automatically called when class accessed
- Cannot have non-static members