Home » Oracle » 1z0-803 » Which one is valid as a replacement for foo?
Given the code fragment:
Boolean b1 = true;
Boolean b2 = false;
int i = 0;
while (foo) { }
Which one is valid as a replacement for foo?
A. b1.compareTo(b2)
B. i = 1
C. i == 2? -1 : 0
D. "foo".equals("bar")
Correct Answer: D
Explanation/Reference:
Explanation:
Equals works fine on strings equals produces a Boolean value.
Incorrect answers:
the compareTo method produces and int, not a boolean.
i = 1 is an assignment, not a comparison.
i == 2? -1:0 would produce the integer 0. A Boolean value is needed.
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