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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Hollis

1 months ago

Wait, what's a Foo? Is that like some kind of foo-foo Java class?

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Alishia

1 months ago

Option D is the correct answer. The diamond operator <> allows the compiler to infer the generic types.

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2 months ago

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

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Stephaine

2 days ago

User 2: That's right. Option A is also incorrect because you can't assign an Integer to a String type.

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Cherelle

1 months ago

User 1: Option C is incorrect. You can't assign an Integer to an Object type.

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Lewis

2 months ago

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

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Blossom

2 months ago

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

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Lewis

3 months ago

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

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