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Which statement best describes instance variables in Java?

easy📝 Conceptual Q11 of 15
Java - Classes and Objects
Which statement best describes instance variables in Java?
AThey store data unique to each object of a class.
BThey are shared by all objects of a class.
CThey are declared inside methods only.
DThey must be static to be used.
Step-by-Step Solution
Solution:

  1. Step 1: Understand instance variable location

    Instance variables are declared inside a class but outside any method.

  2. Step 2: Understand instance variable behavior

    Each object has its own copy, so data is unique per object.

  3. Final Answer:

    They store data unique to each object of a class. -> Option A

  4. Quick Check:

    Instance variables = unique per object [OK]
Quick Trick: Instance variables belong to objects, not the class itself [OK]
Common Mistakes:
  • Confusing instance variables with static variables
  • Thinking instance variables are declared inside methods
  • Assuming instance variables are shared across all objects

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