What are some best practices for using reference variables in Java to write robust and maintainable code?

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what is reference variable in java Informational

• What is the difference between a reference variable and a pointer in languages like C++?
• How do reference variables work with interfaces in Java?
• What are some common interview questions related to reference variables in Java and how would you answer them?
• Explain the relationship between reference variables and the design principle of loose coupling in object-oriented programming.
• Explain the difference between a final reference variable and an immutable object.
• Explain the role of garbage collection in Java in relation to objects no longer referenced by any reference variable.
• Explain the concept of "object lifetime" in Java and how it relates to reference variables and garbage collection.
• What are some considerations for managing object references efficiently in resource-constrained mobile environments?
• How do reference variables facilitate dependency injection, a key aspect of achieving loose coupling?
• When a lambda expression accesses variables from its enclosing scope, are they accessed by value or by reference?