Static Variables, Static Methods, Static Blocks, Static Nested Classes
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The static keyword can be applied to variables, methods, blocks, and nested classes. When an entity is declared as static, it belongs to the class rather than any specific instance of the class. This means that static members are shared among all instances of the class and can be accessed without creating an object of the class.
Thread Safety
Static variables are shared across all instances and threads, which can lead to concurrency issues. Ensure proper synchronization when accessing static variables in a multithreaded environment.
Tight Coupling
Excessive use of static members can lead to tight coupling between classes, making the code less modular and harder to maintain.
Limited Flexibility
Static methods cannot be overridden, limiting the flexibility of the code. Consider using instance methods when polymorphism is required.