Which two Java reserved words are used to implement encapsulation?

Question

Options

• Afinal
• Bstatic
• Cpublic
• Dextends
• Eprivate

• A
  3% (1)
• C
  94% (29)
• D
  3% (1)

Explanation

The question states "which two" but marks only C - this appears to be an error. The correct pair is C (public) and E (private), which together are the foundation of encapsulation.

Encapsulation works by declaring fields private to hide them from direct external access, then exposing controlled access through public getter/setter methods. Without both modifiers working together, you cannot achieve the "hide data, expose behavior" pattern encapsulation requires.

Why the other options are wrong:

• A (final) - prevents reassignment or subclassing, but has nothing to do with hiding or exposing data
• B (static) - ties a member to the class rather than an instance; unrelated to access control
• D (extends) - enables inheritance, which is a separate OOP pillar from encapsulation

Memory tip: Think of encapsulation as a vault - private is the locked door keeping fields hidden, and public is the controlled window (getters/setters) that lets the outside world interact safely. If your exam lists only C as correct, flag the question - the canonical answer is C + E.

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