


How can you call methods defined in an interface using an interface reference variable?
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what is reference variable in java Informational
- How does the Template Method design pattern use reference variables to call abstract and concrete methods in a specific sequence?
- What happens to the underlying resources when you no longer have a reference to an open input/output stream?
- How can using interface or abstract class reference variables promote loose coupling between different parts of a system?
- What is downcasting in Java and why is it necessary?
- How can you use reference variables to implement the Singleton design pattern in Java?
- How can you access annotations associated with classes, methods, or fields using reflection and reference variables?
- How do reference variables help in managing and passing around immutable objects in a thread-safe manner?
- What are the risks associated with downcasting reference variables in Java?
- When you serialize an object, are the objects it refers to also serialized?
- Use final for reference variables when you don't intend to reassign them to a different object.
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