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Submitted by c-admin on Fri, 05/31/2019 - 06:38
QID:
397
Type:
Category:
Question:
Consider :
class A {}
class B extends A {}
class C extends B {}
Which of these boolean expressions correctly identifies when an object 'o' actually refers to an object of class B and not of C?
Select 2 options
A. (o instanceof B) && (!(o instanceof A))
B. !((o instanceof A) || (o instanceof B))
C. (o instanceof B) && (!(o instanceof C)
D. ! ( !(o instanceof B) || (o instanceof C))
E. (o instanceof B) && !((o instanceof A) || (o instanceof C))
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