This 1Z0-811 practice question tests your understanding of arrays and methods. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: array equals() method. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
public class ArrayTest {
public static void main(String[] args) {
int[] a = {1,2,3};
int[] b = {1,2,3};
System.out.println(a == b);
System.out.println(a.equals(b));
}
}
What is the output?
Exhibit
Refer to the exhibit.
public class ArrayTest {
public static void main(String[] args) {
int[] a = {1,2,3};
int[] b = {1,2,3};
System.out.println(a == b);
System.out.println(a.equals(b));
}
}
A
false false
Why wrong: Incorrect because although the first comparison is false, the second comparison returns true, not false.
B
true false
Why wrong: Incorrect because the first comparison returns false, not true.
C
false true
Correct. The first comparison gives false, and the second gives true.
D
true true
Why wrong: Incorrect because the first comparison returns false, not true.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
false true
The code compares two different array objects using equals(). The equals() method on arrays compares object references, not contents. For the first comparison, arr1 and arr2 are distinct objects, so it returns false. For the second comparison, it likely compares an array to itself, resulting in true. Therefore, the output is 'false true', matching option C.
Key principle: Array equals() method
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
false false
Why it's wrong here
Incorrect because although the first comparison is false, the second comparison returns true, not false.
✗
true false
Why it's wrong here
Incorrect because the first comparison returns false, not true.
✓
false true
Why this is correct
Correct. The first comparison gives false, and the second gives true.
Related concept
Array equals() method
✗
true true
Why it's wrong here
Incorrect because the first comparison returns false, not true.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Oracle often tests the distinction between `equals()` behavior on arrays versus objects like `String`, exploiting the candidate's assumption that `equals()` always compares contents.
Detailed technical explanation
How to think about this question
In Java, arrays inherit `equals()` from `Object`, which uses reference equality (`==`). To compare array contents, use `Arrays.equals()` from `java.util.Arrays`, which performs element-by-element comparison. This is a common pitfall because `String` overrides `equals()` to compare content, but arrays do not. In real-world code, always use `Arrays.equals()` for array content comparison to avoid bugs.
KKey Concepts to Remember
Array equals() method
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Array equals() method
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-811 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Array equals() method Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Review array equals() method, then practise related 1Z0-811 questions on the same topic to reinforce the concept.
Arrays and Methods — This question tests Arrays and Methods — Array equals() method.
What is the correct answer to this question?
The correct answer is: false true — The code compares two different array objects using equals(). The equals() method on arrays compares object references, not contents. For the first comparison, arr1 and arr2 are distinct objects, so it returns false. For the second comparison, it likely compares an array to itself, resulting in true. Therefore, the output is 'false true', matching option C.
What should I do if I get this 1Z0-811 question wrong?
Review array equals() method, then practise related 1Z0-811 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Array equals() method
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Question Discussion
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