How does dependency injection work in Java EE and how are managed beans (referenced by variables) obtained and used?
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what is reference variable in java Informational
- How do reference variables work in the context of lambda captures in Java?
- Explain the concept of "object lifetime" in Java and how it relates to reference variables and garbage collection.
- How does the equals() method typically use the state of the object (accessed through reference variables) to determine equality?
- Can a reference variable in Java hold a primitive value?
- Explain the concept of visibility modifiers (public, private, protected, default) and how they affect the accessibility of members accessed through reference variables.
- When you create an input or output stream object, you typically assign it to a reference variable. Why?
- How can you use reflection to access and modify the fields of an object (obtained through a reference variable) at runtime?
- What is the purpose of declaring a reference variable outside a try block if it's used within it?
- What is the role of reference variables in collections (like List, Set, Map) in Java?
- How can using interface or abstract class reference variables promote loose coupling between different parts of a system?
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