[Solved] Which of the following is allowed when overriding a method in Java? — Ans: Changing the return type to a subtype of the original return type | Java

Java - Polymorphism

Which of the following is allowed when overriding a method in Java?

AChanging the method name

BMaking the method static

CChanging the number of parameters

DChanging the return type to a subtype of the original return type

Step-by-Step Solution

Solution:

Step 1: Understand method overriding rules
Method overriding requires the same method name and parameters. Return type can be a subtype (covariant return type).
Step 2: Analyze each option
Changing method name or parameters means overloading, not overriding. Static methods cannot be overridden.
Final Answer:
Changing the return type to a subtype of the original return type -> Option D
Quick Check:
Method overriding allows covariant return types = B [OK]

Quick Trick: Override must keep name and parameters; return type can be subtype [OK]

Common Mistakes:

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