Delve into the world of Java variables with this in-depth exploration. Local variables, scoped within methods, provide temporary storage. Instance variables, tied to object lifetimes, store unique data for each instance. Class variables, shared among all instances, maintain common values. Practical examples showcase these concepts, including arithmetic operations, string concatenation, arrays, collections, nullability, default values, and type casting. Understanding and utilizing these variable types are fundamental to writing efficient, scalable, and maintainable Java code.
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