You want to allow access to a variable only to subclasses, even if they are in different packages, but not to other classes in the same package. How can you achieve this in Java?

hard📝 Application Q8 of 15

Java - Packages and Access Control

ADeclare the variable as public and restrict access by convention

BDeclare the variable as protected and put subclasses in different packages

CDeclare the variable as protected and put subclasses in the same package

DDeclare the variable as private and provide protected getter method

Step-by-Step Solution

Solution:

Step 1: Understand protected access scope
Protected allows access to subclasses and all classes in the same package, so it cannot restrict same-package classes.
Step 2: Use private with protected getter
Declaring variable private hides it from all, but a protected getter allows subclasses access only, excluding other same-package classes.
Final Answer:
Declare the variable as private and provide protected getter method -> Option D
Quick Check:
Private + protected getter limits access to subclasses only [OK]

Quick Trick: Use private variable + protected getter for subclass-only access [OK]

Common Mistakes:

Thinking protected hides from same-package classes
Using public and relying on convention
Ignoring access modifier combinations

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You want to allow access to a variable only to subclasses, even if they are in different packages, but not to other classes in the same package. How can you achieve this in Java?

Step 1: Understand protected access scope

Step 2: Use private with protected getter

Final Answer:

Quick Check:

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