Skip to content
Sharp

Reflection API · interview question

Given a class 'Product' with a private field 'price', how can you dynamically change its value using reflection?

Multiple choiceMediumchapter-16-curatedpremiumreflection-apibreaking-encapsulation
Choose one answer
Answer and explanation

Correct answer

A. Use getDeclaredField and setAccessible(true) before setting the value

Why

To change the value of a private field using reflection, you must first retrieve the Field object using getDeclaredField, call setAccessible(true) to bypass access checks, and then set the value.

Test yourself on Reflection API

A free test with instant, explained results. No account needed.

Start free test
All Reflection API questions →