Core Java · interview question
If a method signature changes from using primitive int to Integer, what potential issue might arise?
Multiple choiceHardchapter-7-curatedpremiumcore-javawrapper-types-and-autoboxing
Answer and explanation
Correct answer
C. NullPointerException
Why
Changing from int to Integer allows for null values, which can lead to NullPointerException if null is passed to a part of the code that expects a non-null value.
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