Oracle Exam 1Z0-809 Topic 5 Question 69 Discussion

Actual exam question for Oracle's 1Z0-809 exam

Question #: 69
Topic #: 5

[All 1Z0-809 Questions]

Given:

Which option fails?

AFoo<String, Integer> mark = new Foo<String, Integer> (''Steve'', 100);

BFoo<String, String> pair = Foo.<String>twice (''Hello World!'');

CFoo<Object, Object> percentage = new Foo<String, Integer>(''Steve'', 100);

DFoo<String, String> grade = new Foo <> (''John'', ''A'');

Show Suggested Answer

Suggested Answer: D

by Pansy at Aug 03, 2024, 01:34 AM

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3 days ago

Haha, option A is a classic. You can't create a Foo object with mismatched generic types.

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4 days ago

Option B looks good to me. The Foo.twice() method should work with String types.

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8 days ago

Option C is incorrect. You can't assign an Integer to an Object type.

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17 days ago

That's a good point, I see what you mean now. Option D does seem incorrect.

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22 days ago

I disagree, I believe option D fails because it's missing type arguments.

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25 days ago

I think option C fails because it's trying to assign a String to an Integer.

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