Java - Packages and Access Control
You want to keep a user's password private in a Java class but allow other classes to check if a password matches. Which is the best way to do this?
You want to keep a user's password private in a Java class but allow other classes to check if a password matches. Which is the best way to do this?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Protect sensitive data with private fields
Passwords should be private to prevent direct access and protect security.Step 2: Provide controlled access via public method
A public method can check if a given password matches without revealing the actual password.Final Answer:
Make the password field private and provide a public method to check the password. -> Option AQuick Check:
Private data + public check method = secure design [OK]
Quick Trick: Keep data private; use public methods to interact safely [OK]
Common Mistakes:
- Making password public exposes sensitive data
- Returning password directly breaks security
- Using protected exposes data to subclasses unnecessarily
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