INTERVIEW QUESTIONS J2EE CORE JAVA DETAILS

Question: What are the differences between method overloading and method overriding?

Answer: Overloaded Method Overridden Method
Arguments

Must change


Must not change

Return type


Can change


Can’t change except for covariant returns

Exceptions


Can change


Can reduce or eliminate. Must not throw new or broader checked exceptions

Access


Can change


Must not make more restrictive (can be less restrictive)

Invocation


Reference type determines which overloaded version is selected. Happens at compile time.


Object type determines which method is selected. Happens at runtime.

Overloaded Method Overridden Method
Arguments

Must change


Must not change

Return type


Can change


Can’t change except for covariant returns

Exceptions


Can change


Can reduce or eliminate. Must not throw new or broader checked exceptions

Access


Can change


Must not make more restrictive (can be less restrictive)

Invocation


Reference type determines which overloaded version is selected. Happens at compile time.


Object type determines which method is selected. Happens at runtime. Source: CoolInterview.com

If you have the better answer, then send it to us. We will display your answer after the approval.

Rules to Post Answers in CoolInterview.com:-

• There should not be any Spelling Mistakes.
• There should not be any Gramatical Errors.
• Answers must not contain any bad words.
• Answers should not be the repeat of same answer, already approved.
• Answer should be complete in itself.

Name :*
Email Id :*
Answer :*
Verification Code	Not readable? Load New Code
Enter the above shown code: *
	Inform me about updated answers to this question