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Exam 1z0-819 topic 1 question 157 discussion

Actual exam question from Oracle's 1z0-819
Question #: 157
Topic #: 1
[All 1z0-819 Questions]

Given:



What is the output?

  • A. 2.0
  • B. 2
  • C. The compilation fails.
  • D. An exception is thrown at runtime.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by KiraguJohn at July 8, 2023, 12:15 p.m.

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ASPushkin
10 months, 1 week ago
it is possible to have different return type for a overriding method in child class, but child’s return type should has co-variant type based on Liskov substitution principle.
upvoted 1 times
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d7bb0b2
11 months, 3 weeks ago
Selected Answer: C
No compile, cannot exist two method with same SIGNATURE (name , parameter number and type), and return two diferent types.
upvoted 1 times
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Omnisumem
1 year, 2 months ago
Selected Answer: C
Tested: C.
upvoted 2 times
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Stavok
1 year, 5 months ago
Selected Answer: C
C is correct Duplicate method getVal() in type Test
upvoted 1 times
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KiraguJohn
1 year, 5 months ago
C is the answer as same name and same signature is not allowed in Java even if they have different return types
upvoted 1 times
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C (25%)
B (20%)
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