Multiple Choice Question

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Submitted by c-admin on Tue, 05/28/2019 - 04:43

QID:

138

Type:

Multiple Choice Question

Category:

Java Programmer I

Tags:

Operators and Scopes

Question:

Given the following declarations, identify which statements will return true:

Integer i1 = 1;
Integer i2 = new Integer(1);
int i3 = 1;
Byte b1 = 1;
Long g1 = 1L;

Note: Although primitive wrapper classes are not explicitly mentioned in the exam objectives, we have seen some candidates get questions on this aspect of wrapper classes.

Select 2 options

A. i1 == i2
B. i1 == i3
C. i1 == b1
D. i1.equals(i2)
E. i1.equals(g1)
F. i1.equals(b1)

Answer and Explanation (Click to expand)

Answer:

B, D

Explanation:

B - This will return true because one operand is a primitive int, so the other will be unboxed and then the value will be compared.

D - This will return true because both are Integer objects and both have the value 1.

Q&A Set:

Set 12

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